 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Ordering number : ENA0356 LA75710VA Overview Monolithic Linear IC NTSC Support TV and VCR VIF/SIF Signal Processing IC The LA75710VA is an NTSC support VIF/SIF signal processing IC that adopts a semi-adjustment-free system. The video-S/N and audio-S/N characteristics are improved. Further, it includes a circuit to prevent video over modulation. For the AFT function it adopts digital AFT. PLL detection is adopted in the FM detector. A 5V power-supply voltage is used to match that used in most multimedia systems. In addition, this IC also includes a buzz canceller to suppress Nyquist buzz and provide high audio quality. Functions VIF Amplifier, PLL Detector, IF AGC, RF AGC, Equalizer, amplifier, Buzz Canceller, Digital AFT, FLL * 1st SIF Block: 1st SIF Amplifier, 1st SIF Detector * SIF Block: Limiter Amplifier, PLL FM detector * Others: IF SW (45.75MHz, 58.75MHz) * VIF Block: Specifications Maximum Ratings at Ta = 25C Parameter Maximum Supply voltage Circuit voltage Symbol VCC V16 V21 Circuit Current I5 I11 I23 Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg Ta75C * Conditions Ratings 6 VCC VCC -3 -7 -2 500 -20 to +75 -55 to +150 Unit V V V mA mA mA mW C C * When mounted on a 65x72x1.6mm3, glass epoxy circuit board. Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before usingany SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor products described or contained herein. 80206 MS OT 20060601-S00001 No.A0356-1/10 LA75710VA Operating Ranges at Ta = 25C Parameter Recommended supply voltage Operating supply voltage Symbol VCC VCC op Conditions Ratings 5.0 4.5 to 5.5 Unit V V Electrical Characteristics at Ta = 25C, VCC = 5V VIF Block Parameter Circuit current 1 Circuit current 2 Maximum RF AGC voltage Minimum RF AGC voltage Input sensitivity AGC range Maximum allowable input No-signal video output voltage Sync. Signal tip voltage Video output amplitude Black noise threshold voltage Black noise clamp voltage Video S/N C-S best Frequency characteristics Differential gain Differential phase No signal AFT voltage Maximum AFT voltage Minimum AFT voltage AFT detection sensitivity AFT output resolution VIF input resistance VIF input capacitance APC hold range (U) APC hold range (L) APC pull-in range (U) APC pull-in range (L) VCO maximum variable range (U) VCO maximum variable range (L) VCO control sensitivity Synchronization ratio VS 2.0 25.0 3.5 28.5 5.0 31.5 kHz/mV % Dfl -2.6 -2.1 MHz Symbol I8 I4 V14H V14L Vi GR Vi max V5 V5tip VOTV VBTH VBCL S/N IC-S Fc DG DP V21 V21H V21L Sf Res-aft Ri Ci Fhu Fhl Fpu Fpl Dfu 2.1 2.0 2.0 2.2 VCC-0.7 0 8.5 P/C = P/S = 10dB 6MHz Video out 2 34 52 95 2.48 0.8 1.3 0.40 1.3 52 45 -3 Conditions min 49 9 VCC-0.5 Ratings typ 54 11 VCC 0 40 56 100 2.72 1.0 1.5 0.65 1.6 56 50 -1.5 2.0 2.0 2.5 VCC-0.5 0.5 12.5 3.125 1.0 3 2.4 -2.4 2.4 -2.4 2.6 -2.0 -2.0 5 4 2.8 VCC 0.7 16.5 2.96 1.2 1.7 0.90 1.9 0.5 46 max 59 13 mA mA V V dBV dB dBV V V Vp-p V V dB dB dB % C V V V mV/kHz kHz/bit k pF MHz MHz MHz MHz MHz Unit No.A0356-2/10 LA75710VA 1st SIF Block (pin 15: 41.25MHz input) Parameter Conversion gain Output level SIF carrier output level 1st SIF maximum input 1st SIF input resistance 1st SIF input capacitance Symbol VG SO Gbpf Si max Ri (SIF) Ci (SIF) 41.25MHz 41.25MHz S = 40dB S = 90dB Reference to SIF input (Pin1) Conditions min 44 100 3 105 Ratings typ 48 11 6 110 2 3 max 52 120 9 dB dBV dB dBV K PF Unit SIF Block (pin 1: 4.5MHz input) Parameter Limiting sensitivity FM detector output voltage AMR Distortion SIF S/N Symbol Vli (lim) VOFM AMR THD S/N (FM) 65 25kHz Conditions min 40 420 54 Ratings typ 46 500 60 0.3 71 0.7 max 52 600 dBV mVrms dB % dB Unit Control Block Parameter AFT mute level control voltage Symbol V17 Conditions min Ratings typ max 2.0 V Unit IF System Switch The IF frequency is 45.75MHz when pin 13 is in the A-(1) state, and is 58.75MHz when that pin is in the A-(2) state. AFT Muting Level The AFT muting level is the high level when pin 17 is open, and is the middle level (VCC/2) when pin 17 is connected to ground. * VCC at 5V. No.A0356-3/10 LA75710VA Package Dimensions unit : mm 3287 6.5 24 13 4.4 6.4 1 0.5 (0.5) 0.22 12 0.15 SANYO : SSOP24(225mil) Pin Assignment 0.1 (1.3) 1.5max 0.5 No.A0356-4/10 LA75710VA Block Diagram and AC Characteristics Test Circuit No.A0356-5/10 LA75710VA Pin Function Pin No. 1 Pin name SIF INPUT Function SIF input. The input impedance is about 1k. Since buzzing and buzz beating can occur if interference enters this input pin, care must be taken when design the pattern layout for this pin. Note that the video and chrominance signals are especially likely to interface with the audio signal. Also, the VIF carrier signal can also cause interference. Equivalent circuit 2 FM BIAS FILTER FM detector bias line filter input. Used to improve the FM detector signal-to-noise ratio. C1 should be at least 0.47F, and 1F is recommended. If the FM detector is not used, connect pin 2 to ground through a 2k resister. This stops the FM detector VCO. 3 SIF CARRIER OUTPUT SIF carrier output. A 200 resister is inserted in series with an emitter-follower output. 4 8 5 9 VCC EQ amp Use the shortest distance possible when decoupling Capacitors VCC and ground. Equalizer circuit. This circuit is used to correct the video signal frequency characteristics. Pin 9 is the EQ amplifier input Continued on next page. No.A0356-6/10 LA75710VA Continued from preceding page. Pin No. 6 7 Pin name VCO COIL Function VCO tank circuit used for video signal detection. This VCO is a vector synthesis VCO. Equivalent circuit 10 APC FILTER PLL detector APC filter connection. For this APC filter we recommend: R = 150 to 390 C = 0.47F 11 COMPOSIT VIDEO OUTPUT Output for the video signal that includes the SIF carrier. A resistor must be inserted between pin 9 and ground to acquire adequate drive capability R2 560 12 RF AGC VR RF AGC VR connection. This pin sets the tuner RF AGC operating point Also, the FM output and the video output can both be muted the same time by connecting this pin to GND. 13 REFERENCE CP INPUT Reference frequency input from this pin. The reference frequency is 3.58MHz, inserting 270K between this pin to GND. The reference frequency is 4.0MHz, this pin leaving open. Continued on next page. No.A0356-7/10 LA75710VA Continued from preceding page. Pin No. 14 Pin name RF AGC OUTPUT Function RF AGC OUT PUT. This output controls the tuner RF AGC. A protective 200 resister is inserted in series with the open collector out put. Determine the external bleeder resister value in accordance with the specifications of the tuner. Equivalent circuit 15 1ST SIF INPUT First SIF input. ADC cut capacitor must be used in the input circuit. If a SAW filter is used: The first SIF sensitivity can be increased by inserting an inductor between the SAW filter and the IC to neutralize the SAW filter output capacitance and the IC input capacitance. When used in an intercarrier system: This pin (pin 13) maybe connect to GND. 16 IF AGC FILTER IF AGC filter connection. The signal peak-detected by the built-in AGC detector is converted to the AGC voltage at pin 16. Additionally, a second AGC filter (a lag-lead filter) used to create the dual time constants is provided internally in the IC. Use a 0.022F capacitor as the external capacitor, and other characteristics. 17 AFT MUTE LEVEL The MUTE voltage of AFT is set up this pin. It becomes a voltage that generated by an external bleeder resistor, when this pin is connected with GND. It becomes a High voltage (VCC) when this pin is leaving open. 18 19 VIF INPUT VIF amplifier input. The input circuit is a balanced circuit, and the input constants are: R1.0k C3pF 20 GND Continued on next page. No.A0356-8/10 LA75710VA Continued from preceding page. Pin No. 21 Pin name AFT OUTPUT AFT output. AFT center voltage is generated by an external bleeder. The AFT gain is increased by increasing the resistance of this external bleeder resister. R 22k C = 0.1F Function Equivalent circuit 22 SIF BPF OUTPUT The output to the external bandpass filter is passed through an internal 6dB amplifier before being output. 23 AUDIO OUTPUT Audio FM detector output. A 54K resister is inserted in series with an emitter-follower output. For applications that support mono: Create an external deemphasis circuit. t = C 1xR1 24 AUDIO BIAS FILTER Connection for a filter used to hold the FM detector output DC voltage fixed. Normally, a 1F electrolytic capacitor should be used. The capacitance should be increased if the low band (around 50Hz) frequency characteristics need to be improved. The FM detector output level can be reduced and the FM dynamic range can be increased by inserting a resistor and a capacitor in series between pin 24 and GND. No.A0356-9/10 LA75710VA Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor products (including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Semiconductor Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of August, 2006. Specifications and information herein are subject to change without notice. PS No.A0356-10/10 |
Price & Availability of LA75710VA
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |