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HFA1145
Data Sheet September 1998 File Number 3955.3
330MHz, Low Power, Current Feedback Video Operational Amplifier with Output Disable
The HFA1145 is a high speed, low power current feedback amplifier built with Intersil's proprietary complementary bipolar UHF-1 process. This amplifier features a TTL/CMOS compatible disable control, pin 8, which when pulled low reduces the supply current and forces the output into a high impedance state. This allows easy implementation of simple, low power video switching and routing systems. Component and composite video systems also benefit from this op amp's excellent gain flatness, and good differential gain and phase specifications. Multiplexed A/D applications will also find the HFA1145 useful as the A/D driver/multiplexer. The HFA1145 is a low power, high performance upgrade for the CLC410. For Military grade product, please refer to the HFA1145/883 data sheet.
Features
* Low Supply Current . . . . . . . . . . . . . . . . . . . . . . . . 5.8mA * High Input Impedance . . . . . . . . . . . . . . . . . . . . . . . 1M * Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 330MHz * Very Fast Slew Rate . . . . . . . . . . . . . . . . . . . . . . 1000V/s * Gain Flatness (to 75MHz) . . . . . . . . . . . . . . . . . . 0.1dB * Differential Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02% * Differential Phase . . . . . . . . . . . . . . . . . . . . 0.03 Degrees * Output Enable/Disable Time. . . . . . . . . . . . . . 180ns/35ns * Pin Compatible Upgrade for CLC410
Applications
* Flash A/D Drivers * Video Switching and Routing * Professional Video Processing * Video Digitizing Boards/Systems * Multimedia Systems * RGB Preamps
Ordering Information
PART NUMBER (BRAND) HFA1145IP HFA1145IB (H1145I) HFA11XXEVAL TEMP. RANGE (oC) -40 to 85 -40 to 85 PACKAGE 8 Ld PDIP 8 Ld SOIC PKG. NO. E8.3 M8.15
* Medical Imaging * Hand Held and Miniaturized RF Equipment * Battery Powered Communications
DIP Evaluation Board for High Speed Op Amps
Pinout
HFA1145 (PDIP, SOIC) TOP VIEW
NC 1 -IN 2 +IN 3 V- 4 8 DISABLE
+
7 V+ 6 OUT 5 NC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Copyright (c) Intersil Corporation 1999
HFA1145
Absolute Maximum Ratings
Voltage Between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSUPPLY Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V Output Current (Note 1) . . . . . . . . . . . . . . . . .Short Circuit Protected 30mA Continuous 60mA 50% Duty Cycle ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >600V
Thermal Information
Thermal Resistance (Typical, Note 2) JA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 Maximum Junction Temperature (Die Only) . . . . . . . . . . . . . . . .175oC Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES: 1. Output is short circuit protected to ground. Brief short circuits to ground will not degrade reliability, however continuous (100% duty cycle) output current must not exceed 30mA for maximum reliability. 2. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
VSUPPLY = 5V, AV = +1, RF = 510, RL = 100, Unless Otherwise Specified (NOTE 3) TEST LEVEL TEMP. (oC)
PARAMETER INPUT CHARACTERISTICS Input Offset Voltage
TEST CONDITIONS
MIN
TYP
MAX
UNITS
A A
25 Full Full 25 85 -40 25 85 -40 25 Full Full 25 85 -40 25 85 -40 25 Full Full 25 85 -40
47 45 45 50 47 47 0.8 0.5 0.5 -
2 3 1 50 48 48 54 50 50 6 10 5 0.5 0.8 0.8 1.2 0.8 0.8 2 5 60 3 4 4
5 8 10 15 25 60 1 3 3 7.5 15 200 6 8 8
mV mV V/oC dB dB dB dB dB dB A A nA/oC A/V A/V A/V M M M A A nA/oC A/V A/V A/V
Average Input Offset Voltage Drift Input Offset Voltage Common-Mode Rejection Ratio VCM = 1.8V VCM = 1.8V VCM = 1.2V Input Offset Voltage Power Supply Rejection Ratio VPS = 1.8V VPS = 1.8V VPS = 1.2V Non-Inverting Input Bias Current
B A A A A A A A A
Non-Inverting Input Bias Current Drift Non-Inverting Input Bias Current Power Supply Sensitivity VPS = 1.8V VPS = 1.8V VPS = 1.2V Non-Inverting Input Resistance VCM = 1.8V VCM = 1.8V VCM = 1.2V Inverting Input Bias Current
B A A A A A A A A
Inverting Input Bias Current Drift Inverting Input Bias Current Common-Mode Sensitivity VCM = 1.8V VCM = 1.8V VCM = 1.2V
B A A A
2
HFA1145
Electrical Specifications
VSUPPLY = 5V, AV = +1, RF = 510, RL = 100, Unless Otherwise Specified (Continued) (NOTE 3) TEST LEVEL A A A C C A A f = 100kHz f = 100kHz f = 100kHz B B B TEMP. (oC) 25 85 -40 25 25 25, 85 -40 25 25 25
PARAMETER Inverting Input Bias Current Power Supply Sensitivity
TEST CONDITIONS VPS = 1.8V VPS = 1.8V VPS = 1.2V
MIN 1.8 1.2 -
TYP 2 4 4 60 1.6 2.4 1.7 3.5 2.5 20
MAX 5 8 8 -
UNITS A/V A/V A/V pF V V nV/Hz pA/Hz pA/Hz
Inverting Input Resistance Input Capacitance Input Voltage Common Mode Range (Implied by VIO CMRR, +RIN, and -IBIAS CMS tests) Input Noise Voltage Density (Note 6) Non-Inverting Input Noise Current Density (Note 6) Inverting Input Noise Current Density (Note 6) TRANSFER CHARACTERISTICS Open Loop Transimpedance Gain AC CHARACTERISTICS -3dB Bandwidth (VOUT = 0.2VP-P, Note 6) AV = -1
C
25
-
500
-
k
RF = 510, Unless Otherwise Specified AV = +1, +RS = 510 B B AV = -1, RF = 425 AV = +2 B B B AV = +10, RF = 180 B B 25 Full 25 25 Full 25 Full 25 25 25 25 Full 25 Full 25 25 Full 270 240 300 330 260 130 90 135 140 115 0.03 0.04 0.11 0.22 0.03 0.09 1 MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz dB dB dB dB dB dB V/V
Full Power Bandwidth (VOUT = 5VP-P at AV = +2/-1, 4VP-P at AV = +1, Note 6) Gain Flatness (AV = +2, VOUT = 0.2VP-P, Note 6)
AV = +1, +RS = 510 AV = -1 AV = +2 To 25MHz
B B B B B
To 75MHz
B B
To 25MHz Gain Flatness (AV = +1, +RS = 510, VOUT = 0.2VP-P, Note 6) To 75MHz Minimum Stable gain OUTPUT CHARACTERISTICS AV = +2, RF = 510, Unless Otherwise Specified Output Voltage Swing (Note 6) Output Current (Note 6) Output Short Circuit Current Closed Loop Output Impedance (Note 6) DC AV = -1, RL = 100
B B A
A A
25 Full 25, 85 -40 25 25
3 2.8 50 28 -
3.4 3 60 42 90 0.08
-
V V mA mA mA
AV = -1, RL = 50
A A B B
3
HFA1145
Electrical Specifications
VSUPPLY = 5V, AV = +1, RF = 510, RL = 100, Unless Otherwise Specified (Continued) (NOTE 3) TEST LEVEL B B B B B TEMP. (oC) 25 25 25 25 25
PARAMETER Second Harmonic Distortion (VOUT = 2VP-P, Note 6) Third Harmonic Distortion (VOUT = 2VP-P, Note 6) Reverse Isolation (S12, Note 6) TRANSIENT CHARACTERISTICS Rise and Fall Times
TEST CONDITIONS 10MHz 20MHz 10MHz 20MHz 30MHz
MIN -
TYP -48 -44 -50 -45 -55
MAX -
UNITS dBc dBc dBc dBc dB
AV = +2, RF = 510, Unless Otherwise Specified VOUT = 0.5VP-P B B 25 Full 25 25 25 25 25 Full 25 Full 25 Full 25 Full 25 Full 25 Full 25 25 25 25 1.1 1.4 3 5 3 11 1000 975 650 580 1400 1200 800 700 2100 1900 1000 900 15 23 30 8.5 ns ns % % % % V/s V/s V/s V/s V/s V/s V/s V/s V/s V/s V/s V/s ns ns ns ns
Overshoot (Note 4) (VOUT = 0 to 0.5V, VIN tRISE = 1ns) Overshoot (Note 4) (VOUT = 0.5VP-P, VIN tRISE = 1ns) Slew Rate (VOUT = 4VP-P, AV = +1, +RS = 510)
+OS -OS +OS -OS +SR
B B B B B B
-SR (Note 5)
B B
Slew Rate (VOUT = 5VP-P, AV = +2)
+SR
B B
-SR (Note 5)
B B
Slew Rate (VOUT = 5VP-P, AV = -1)
+SR
B B
-SR (Note 5)
B B
Settling Time (VOUT = +2V to 0V step, Note 6)
To 0.1% To 0.05% To 0.02%
B B B B
Overdrive Recovery Time VIDEO CHARACTERISTICS Differential Gain (f = 3.58MHz) Differential Phase (f = 3.58MHz) DISABLE CHARACTERISTICS Disabled Supply Current DISABLE Input Logic Low DISABLE Input Logic High
VIN = 2V AV = +2, RF = 510, Unless Otherwise Specified RL = 150 RL = 75 RL = 150 RL = 75
B B B B
25 25 25 25
-
0.02 0.03 0.03 0.05
-
% % Degrees Degrees
VDISABLE = 0V
A A A A
Full Full 25, 85 -40 Full
2.0 2.4 -
3 100
4 0.8 200
mA V V V A
DISABLE Input Logic Low Current
VDISABLE = 0V
A
4
HFA1145
Electrical Specifications
VSUPPLY = 5V, AV = +1, RF = 510, RL = 100, Unless Otherwise Specified (Continued) (NOTE 3) TEST LEVEL A B B B 2V, A B B TEMP. (oC) Full 25 25 25 Full 25 25
PARAMETER DISABLE Input Logic High Current Output Disable Time (Note 6) Output Enable Time (Note 6) Disabled Output Capacitance Disabled Output Leakage Off Isolation (VDISABLE = 0V, VIN = 1VP-P, Note 6) POWER SUPPLY CHARACTERISTICS Power Supply Range Power Supply Current (Note 6)
TEST CONDITIONS VDISABLE = 5V VIN = 1V, VDISABLE = 2.4V to 0V VIN = 1V, VDISABLE = 0V to 2.4V VDISABLE = 0V VDISABLE = 0V, VIN = VOUT = 3V At 5MHz At 25MHz
MIN -
TYP 1 35 180 2.5 3 -75 -60
MAX 15 10 -
UNITS A ns ns pF A dB dB
C A A
25 25 Full
4.5 -
5.8 5.9
5.5 6.1 6.3
V mA mA
NOTES: 3. Test Level: A. Production Tested; B. Typical or Guaranteed Limit Based on Characterization; C. Design Typical for Information Only. 4. Undershoot dominates for output signal swings below GND (e.g. 0.5VP-P), yielding a higher overshoot limit compared to the VOUT = 0 to 0.5V condition. See the "Application Information" section for details. 5. Slew rates are asymmetrical if the output swings below GND (e.g. a bipolar signal). Positive unipolar output signals have symmetric positive and negative slew rates comparable to the +SR specification. See the "Application Information" section, and the pulse response graphs for details. 6. See Typical Performance Curves for more information.
Application Information
Optimum Feedback Resistor
Although a current feedback amplifier's bandwidth dependency on closed loop gain isn't as severe as that of a voltage feedback amplifier, there can be an appreciable decrease in bandwidth at higher gains. This decrease may be minimized by taking advantage of the current feedback amplifier's unique relationship between bandwidth and RF. All current feedback amplifiers require a feedback resistor, even for unity gain applications, and RF, in conjunction with the internal compensation capacitor, sets the dominant pole of the frequency response. Thus, the amplifier's bandwidth is inversely proportional to RF. The HFA1145 design is optimized for RF = 510 at a gain of +2. Decreasing RF decreases stability, resulting in excessive peaking and overshoot (Note: Capacitive feedback will cause the same problems due to the feedback impedance decrease at higher frequencies). At higher gains, however, the amplifier is more stable so RF can be decreased in a trade-off of stability for bandwidth. The table below lists recommended RF values for various gains, and the expected bandwidth. For a gain of +1, a resistor (+RS) in series with +IN is required to reduce gain peaking and increase stability.
GAIN (ACL) -1 +1 +2 +5 +10
RF () 425 510 (+RS = 510) 510 200 180
BANDWIDTH (MHz) 300 270 330 300 130
Non-inverting Input Source Impedance
For best operation, the DC source impedance seen by the non-inverting input should be 50. This is especially important in inverting gain configurations where the noninverting input would normally be connected directly to GND.
DISABLE Input TTL Compatibility
The HFA1145 derives an internal GND reference for the digital circuitry as long as the power supplies are symmetrical about GND. With symmetrical supplies the digital switching threshold (VTH = (VIH + VIL)/2 = (2.0 + 0.8)/2) is 1.4V, which ensures the TTL compatibility of the DISABLE input. If asymmetrical supplies (e.g. +10V, 0V) are utilized, the switching threshold becomes:
V+ + VV TH = ------------------- + 1.4V 2
and the VIH and VIL levels will be VTH 0.6V, respectively.
5
HFA1145
Optional GND Pad (Die Use Only) for TTL Compatibility
The die version of the HFA1145 provides the user with a GND pad for setting the disable circuitry GND reference. With symmetrical supplies the GND pad may be left unconnected, or tied directly to GND. If asymmetrical supplies (e.g. +10V, 0V) are utilized, and TTL compatibility is desired, die users must connect the GND pad to GND. With an external GND, the DISABLE input is TTL compatible regardless of supply voltage utilized.
Driving Capacitive Loads
Capacitive loads, such as an A/D input, or an improperly terminated transmission line will degrade the amplifier's phase margin resulting in frequency response peaking and possible oscillations. In most cases, the oscillation can be avoided by placing a resistor (RS) in series with the output prior to the capacitance. Figure 1 details starting points for the selection of this resistor. The points on the curve indicate the RS and CL combinations for the optimum bandwidth, stability, and settling time, but experimental fine tuning is recommended. Picking a point above or to the right of the curve yields an overdamped response, while points below or left of the curve indicate areas of underdamped performance. RS and CL form a low pass network at the output, thus limiting system bandwidth well below the amplifier bandwidth of 270MHz (for AV = +1). By decreasing RS as CL increases (as illustrated in the curves), the maximum bandwidth is obtained without sacrificing stability. In spite of this, the bandwidth decreases as the load capacitance increases. For example, at AV = +1, RS = 62, CL = 40pF, the overall bandwidth is limited to 180MHz, and bandwidth drops to 75MHz at AV = +1, RS = 8, CL = 400pF.
50 SERIES OUTPUT RESISTANCE ()
Pulse Undershoot and Asymmetrical Slew Rates
The HFA1145 utilizes a quasi-complementary output stage to achieve high output current while minimizing quiescent supply current. In this approach, a composite device replaces the traditional PNP pulldown transistor. The composite device switches modes after crossing 0V, resulting in added distortion for signals swinging below ground, and an increased undershoot on the negative portion of the output waveform (See Figures 5, 8, and 11). This undershoot isn't present for small bipolar signals, or large positive signals. Another artifact of the composite device is asymmetrical slew rates for output signals with a negative voltage component. The slew rate degrades as the output signal crosses through 0V (See Figures 5, 8, and 11), resulting in a slower overall negative slew rate. Positive only signals have symmetrical slew rates as illustrated in the large signal positive pulse response graphs (See Figures 4, 7, and 10).
PC Board Layout
This amplifier's frequency response depends greatly on the care taken in designing the PC board. The use of low inductance components such as chip resistors and chip capacitors is strongly recommended, while a solid ground plane is a must! Attention should be given to decoupling the power supplies. A large value (10F) tantalum in parallel with a small value (0.1F) chip capacitor works well in most cases. Terminated microstrip signal lines are recommended at the device's input and output connections. Capacitance, parasitic or planned, connected to the output must be minimized, or isolated as discussed in the next section. Care must also be taken to minimize the capacitance to ground at the amplifier's inverting input (-IN), as this capacitance causes gain peaking, pulse overshoot, and if large enough, instability. To reduce this capacitance, the designer should remove the ground plane under traces connected to -IN, and keep connections to -IN as short as possible. An example of a good high frequency layout is the Evaluation Board shown in Figure 2.
40
30
20 AV = +2 10
AV = +1
0
0
50
100
200 300 150 250 LOAD CAPACITANCE (pF)
350
400
FIGURE 1. RECOMMENDED SERIES OUTPUT RESISTOR vs LOAD CAPACITANCE
Evaluation Board
The performance of the HFA1145 may be evaluated using the HFA11XX Evaluation Board. The layout and schematic of the board are shown in Figure 2. The VH connection may be used to exercise the DISABLE pin, but note that this connection has no 50 termination. To order evaluation boards (part number HFA11XXEVAL), please contact your local sales office.
6
HFA1145
VH
1 +IN OUT VL VGND V+
FIGURE 2A. TOP LAYOUT
510 R1 1 50 IN 0.1F -5V GND 2 3 4 10F 8 7 50 6 5 GND OUT VL 0.1F 510 VH
FIGURE 2B. TOP LAYOUT
10F +5V
FIGURE 2. EVALUATION BOARD SCHEMATIC AND LAYOUT
Typical Performance Curves
200 150 OUTPUT VOLTAGE (mV) 100 50 0 -50 -100 -150 -200 TIME (5ns/DIV.) AV = +1 +RS = 510
VSUPPLY = 5V, RF = 510, TA = 25oC, RL = 100, Unless Otherwise Specified
3.0 2.5 OUTPUT VOLTAGE (V) 2.0 1.5 1.0 0.5 0 -0.5 -1.0 TIME (5ns/DIV.) AV = +1 +RS = 510
FIGURE 3. SMALL SIGNAL PULSE RESPONSE
FIGURE 4. LARGE SIGNAL POSITIVE PULSE RESPONSE
7
HFA1145 Typical Performance Curves
2.0 1.5 OUTPUT VOLTAGE (V) 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 TIME (5ns/DIV.)
VSUPPLY = 5V, RF = 510, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
AV = +1 +RS = 510 OUTPUT VOLTAGE (mV)
200 AV = +2 150 100 50 0 -50 -100 -150 -200 TIME (5ns/DIV.)
FIGURE 5. LARGE SIGNAL BIPOLAR PULSE RESPONSE
FIGURE 6. SMALL SIGNAL PULSE RESPONSE
3.0 AV = +2 2.5 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.0 1.5 1.0 0.5 0 -0.5 -1.0 TIME (5ns/DIV.)
2.0 AV = +2 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 TIME (5ns/DIV.)
FIGURE 7. LARGE SIGNAL POSITIVE PULSE RESPONSE
FIGURE 8. LARGE SIGNAL BIPOLAR PULSE RESPONSE
200 150 OUTPUT VOLTAGE (mV) 100 50 0 -50 -100 -150 -200 TIME (5ns/DIV.) AV = +10 RF = 180 OUTPUT VOLTAGE (V)
3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0
AV = +10 RF = 180
TIME (5ns/DIV.)
FIGURE 9. SMALL SIGNAL PULSE RESPONSE
FIGURE 10. LARGE SIGNAL POSITIVE PULSE RESPONSE
8
HFA1145 Typical Performance Curves
2.0 1.5 OUTPUT VOLTAGE (V) 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 TIME (5ns/DIV.) 0V AV = +1, VIN = 1V TIME (50ns/DIV.) OUT 400mV/DIV. AV = +10 RF = 180 DISABLE 800mV/DIV. (0.4V to 2.4V)
VSUPPLY = 5V, RF = 510, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
FIGURE 11. LARGE SIGNAL BIPOLAR PULSE RESPONSE
FIGURE 12. OUTPUT ENABLE AND DISABLE RESPONSE
GAIN (dB)
3 0 -3
VOUT = 200mVP-P +RS = 510 (+1) +RS = 0 (-1)
NORMALIZED GAIN (dB)
AV = +1
3 0 -3 AV = +10 AV = +5
AV = +2
NORMALIZED PHASE (DEGREES)
AV = -1
90 180 AV = +1 0.3 1 10 FREQUENCY (MHz) 100 500 270
VOUT = 200mVP-P RF = 510 (+2) RF = 200 (+5) RF = 180 (+10) 0.3 1
AV = +5 AV = +10
90 180 270 500
10 FREQUENCY (MHz)
100
FIGURE 13. FREQUENCY RESPONSE
NORMALIZED GAIN (dB)
FIGURE 14. FREQUENCY RESPONSE
NORMALIZED GAIN (dB)
AV = +2 3 0 -3
VOUT = 200mVP-P
3 0 -3 VOUT = 4VP-P (+1) VOUT = 5VP-P (-1, +2) +RS = 510 (+1) AV = +1 AV = +2
AV = -1
VOUT = 1.5VP-P VOUT = 5VP-P VOUT = 200mVP-P PHASE (DEGREES)
0 90
VOUT = 1.5VP-P VOUT = 5VP-P 0.3 1 10 FREQUENCY (MHz) 100 500
180 270
1
10 FREQUENCY (MHz)
100
200
FIGURE 15. FREQUENCY RESPONSE FOR VARIOUS OUTPUT VOLTAGES
FIGURE 16. FULL POWER BANDWIDTH
9
PHASE (DEGREES)
AV = -1
0
AV = +2
0
HFA1145 Typical Performance Curves
NORMALIZED GAIN (dB) VOUT = 200mVP-P 3 0 RL = 100 BANDWIDTH (MHz) -3 RL = 50 AV = +2
VSUPPLY = 5V, RF = 510, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
RL = 500
RL = 1k
500 AV = +2 400 AV = +1 VOUT = 200mVP-P RF = 180 (+10) +RS = 510 (+1)
300
PHASE (DEGREES)
RL = 50 RL = 100 RL = 1k RL = 500
0 90 180 270
200 AV = +10
100
0.3
1
10 FREQUENCY (MHz)
100
500
0 -100
-50
0
50
100
150
TEMPERATURE (oC)
FIGURE 17. FREQUENCY RESPONSE FOR VARIOUS LOAD RESISTORS
FIGURE 18. -3dB BANDWIDTH vs TEMPERATURE
OFF ISOLATION (dB)
VOUT = 200mVP-P +RS = 510 (+1) 0.25 NORMALIZED GAIN (dB) 0.20 0.15 0.10 0.05 0 -0.05 -0.10 1 10 FREQUENCY (MHz) 75 AV = +1 AV = +2
-30 -40 -50 -60 -70 -80 -90 AV = +2 VIN = 1VP-P
0.3
1
10 FREQUENCY (MHz)
100
FIGURE 19. GAIN FLATNESS
FIGURE 20. OFF ISOLATION
REVERSE ISOLATION (dB)
-40 -50 -60 -70 -80 -90 AV = -1 VOUT = 2VP-P AV = +1, +2 OUTPUT IMPEDANCE () 1K 100 10 1 0.1 0.01 AV = +2
0.3
1
10 FREQUENCY (MHz)
100
0.3
1
10 100 FREQUENCY (MHz)
1000
FIGURE 21. REVERSE ISOLATION (S12)
FIGURE 22. ENABLED OUTPUT IMPEDANCE
10
HFA1145 Typical Performance Curves
VSUPPLY = 5V, RF = 510, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued)
AV = +2 0.8 0.6 SETTLING ERROR (%) VOUT = 2V
-30 AV = +2 -40
0.4 0.2 0.1 0 -0.2 -0.4 -0.6 -0.8
DISTORTION (dBc)
20MHz -50 10MHz -60
-70 3 8 13 18 23 28 TIME (ns) 33 38 43 48 -5 0 5 10 15 OUTPUT POWER (dBm)
FIGURE 23. SETTLING RESPONSE
FIGURE 24. SECOND HARMONIC DISTORTION vs POUT
-30 AV = +2
3.6 3.5 3.4 OUTPUT VOLTAGE (V) 3.3 3.2 3.1 3.0 2.9 2.8 2.7 |-VOUT| (RL= 50) +VOUT (RL= 50)
20MHz
AV = -1
|-VOUT| (RL= 100) +VOUT (RL= 100)
-40 DISTORTION (dBc)
-50
10MHz
-60
-70 -5 0 5 OUTPUT POWER (dBm) 10 15
2.6 -50
-25
0
25
50
75
100
125
TEMPERATURE (oC)
FIGURE 25. THIRD HARMONIC DISTORTION vs POUT
100 100 POWER SUPPLY CURRENT (mA)
FIGURE 26. OUTPUT VOLTAGE vs TEMPERATURE
6.1
INI-
NOISE CURRENT (pA/Hz)
NOISE VOLTAGE (nV/Hz)
6.0
5.9
10 ENI INI+ 1 0.1
10
5.8
5.7
5.6 1 10 FREQUENCY (kHz) 1 100 3.5 4 4.5 5 5.5 6 6.5 7 7.5
POWER SUPPLY VOLTAGE (V)
FIGURE 27. INPUT NOISE CHARACTERISTICS
FIGURE 28. SUPPLY CURRENT vs SUPPLY VOLTAGE
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HFA1145 Die Characteristics
DIE DIMENSIONS: 59 mils x 59 mils x 19 mils 1500m x 1500m x 483m METALLIZATION: Type: Metal 1: AICu(2%)/TiW Thickness: Metal 1: 8kA 0.4kA Type: Metal 2: AICu(2%) Thickness: Metal 2: 16kA 0.8kA PASSIVATION: Type: Nitride Thickness: 4kA 0.5kA TRANSISTOR COUNT: 75 SUBSTRATE POTENTIAL (Powered Up): Floating (Recommend Connection to V-)
Metallization Mask Layout
HFA1145
-IN
DISABLE
V+
OUT +IN
V-
OPTIONAL GND (NOTE)
NOTE: This pad is not bonded out on packaged units. Die users may set a GND reference, via this pad, to ensure the TTL compatibility of the DIS input when using asymmetrical supplies (e.g. V+ = 10V, V- = 0V). See the "Application Information" section for details.
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
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