 |
|
| 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: |
| ICs for Mobile Communication AN8538SH Single PLL IC for cellular phone s Overview The AN8538SH is a single PLL IC with a fixed frequency dividing ratio for IF local oscillation of a cellular phone. You can generate a local signal of 260.76 MHz by using a reference signal of 19.68 MHz or 19.8 MHz. 1 10 Unit: mm 0.20.1 0.5 * Two reference frequencies of 19.68 MHz and 19.8 MHz are available. (Select by SELECT pin.) * Power saving operation (VCC = 2.7 V, 0.9 mA typ.) * Power saving function (10 A max.) * Two systems of charge pump output (one of them can be switched to on/off with SW pin.) * Lock detection function * SSONF-10D small package 0.10.1 s Features 0.6250.10 5 6 0.50.2 4.30.30 6.30.30 SSOP010-P-0225 s Applications * IF local oscillation for cellular phone terminal (CDMA for North America) s Block Diagram SELECT REF VCC LD SW 10 9 8 7 Lock detection 14-bit R counter 15-bit N counter Phase comparator 1/16, 1/17 prescaler Selector 2 3 4 CPSUB 1 CP GND IFIN PS 5 6 0.6250.10 0.15+0.1 -0.05 1.50.2 3.00.30 1 AN8538SH s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 Symbol CPSUB CP GND IFIN PS SW VCC REF SELECT LD Description Sub charge pump output Charge pump output GND pin IF input Power save control Sub charge pump control Power supply pin Reference frequency input IF frequency changeover control Lock detection output I/O O O I I I I I O ICs for Mobile Communication Level CMOS CMOS ECL CMOS CMOS ECL CMOS CMOS s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 *1 Symbol VCC ICC PD Topr Tstg Rating 3.6 3.5 12.6 -30 to +85 -55 to +125 Unit V mA mW C C Operating ambient temperature Storage temperature *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: Ta = 85C s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 2.55 to 3.3 Unit V s Electrical Characteristics at VCC = 2.7 V, fREFIN = 19.68 MHz, VREFIN = 0.6 V[p-p], Ta = 25C Parameter Consumption current 1 Consumption current 2 Reference signal input level High-level input voltage Low-level input voltage High-level input current Low-level input current Symbol ICC1 ICC2 VREFIN VIH VIL IIH IIL At VIH = 2.16 V applied At VIL = 0 V applied Conditions SELECT = low At 260.76 MHz lock Power save mode At PS = low setting fREFIN = 19.68 MHz Min 0.5 2.16 0 -1 -1 Typ 0.90 0 0 0 Max 1.21 10 1.2 3.30 0.4 1 1 Unit mA A V[p-p] V V A A 2 ICs for Mobile Communication AN8538SH s Electrical Characteristics at VCC = 2.7 V, fREFIN = 19.68 MHz, VREFIN = 0.6 V[p-p], Ta = 25C (continued) * Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Consumption current 1 Consumption current 2 IF input level Reference signal input level Output leak current Symbol ICC1 ICC2 VIFIN VREFIN IOZ Conditions SELECT = low At 260.76 MHz lock SELECT = high At 260.76 MHz lock fIFIN = 100 MHz to 350 MHz fREFIN = 10 MHz to 25 MHz At VOZ = 0 V, 2.7 V applied Min - 10 0.5 - 1.0 Typ 0.90 0.90 Max 1.34 1.34 +2 1.2 +1.0 Unit mA mA dBm V[p-p] A s Terminal Equivalent Circuits Pin No. 1 2 Equivalent circuit Pin 1: CPSUB Pin 2: CP Description 2 1 SW 3 4 GND IFIN 4 4.5 k 4.5 k 5 Pin 5 9 PS 6 SW 6 3 AN8538SH s Terminal Equivalent Circuits (continued) Pin No. 7 8 10 k 10 k ICs for Mobile Communication Equivalent circuit VCC REF Description 8 9 10 Refer to pin 5 SELECT LD 10 s Application Notes 1. Input level characteristics 1) IF input level characteristics VCC = 2.55 V to 3.3V Upper limit 10 Ta = -30C, 25C, 85C 0 Input level (dBm) -10 Lower limit Ta = 85C Ta = 25C Ta = -30C -30 -20 -40 75 100 150 200 250 300 350 Input frequency (MHz) 4 ICs for Mobile Communication s Application Notes (continued) 1. Input level characteristics (continued) 2) REF input level characteristics VCC = 2.55 V to 3.3V AN8538SH 20 Upper limit Ta = -30C, 25C, 85C 10 Input level (dBm) 0 Lower limit -10 Ta = -30C -20 Ta = 85C -30 0 5 10 15 20 25 30 Ta = 25C Input frequency (MHz) 2. Characteristics specification 1) IF select specification SELECT pin control enables you to switch IF as below: SELECT = low fOUT = 260.76 MHz, fR = 60 kHz (P = 16, N = 271, A = 10, R = 328) SELECT = high fOUT = 260.76 MHz, fR = 60 kHz (P = 16, N = 271, A = 10, R = 330) 2) Unlock detection and LD output specification LD output is high in a lock mode and low in an unlock mode. Lock signal is outputted in a power save mode. SELECT = high : Detection time is 16 s. About detection accuracy, when a dividing output shifts by (51 x 3) ns for fREF = 60 kHz, it generates an unlock output. SELECT = low : Detection time is 16 s. About detection accuracy, when a dividing output shifts by (51 x 3) ns for fREF = 60 kHz, it generates an unlock output. 3) Power save control specification When power save control pin (PS) is high, it is set to an operating mode. When it is low, it is set to power save mode. 4) Analog SW control specification CPSUB is controlled by SW pin. SW = low : CPSUB open SW = high: CPSUB operation 5) Other specification Set CMOS input pins, such as PS pin, SW pin, SELECT pin, etc., normally to VCC or GND. 5 |
Price & Availability of AN8538
 |
|
|
|
|
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] |