AN8538

AN8538SH PANASONIC | Alldatasheet

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ICs for Mobile Communication AN8538SH Single PLL IC for cellular phone n 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. n Features

• 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 mA 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 n Applications
• IF local oscillation for cellular phone terminal (CDMA for North America) SSOP010-P-0225 Unit: mm 4.3±0.30 6.3±0.30 0.5±0.2 0.1±0.1 0.2±0.1 0.5 3.0±0.30 1.5±0.2 0.15+0.1 –0.05 n Block Diagram 1 LD SELECT REF V CC SW 14-bit R counter Phase comparator Selector Lock detection 15-bit N counter 1/16, 1/17 prescaler PS IFIN GND CP CPSUB

AN8538SH ICs for Mobile Communication Parameter Symbol Range Unit Supply voltage V CC 2.55 to 3.3 V n Recommended Operating Range n Pin Descriptions Parameter Symbol Rating Unit Supply voltage V CC 3.6 V Supply current I CC 3.5 mA Power dissipation *2 PD 12.6 mW Operating ambient temperature *1 T opr -30 to +85 °C Storage temperature *1 Tstg -55 to +125 °C n Absolute Maximum Ratings Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: Ta = 85°C Pin No. Symbol Description I/O Level

1 CPSUB Sub charge pump output O CMOS

2 CP Charge pump output O CMOS

3 GND GND pin ¾¾

4 IFIN IF input I ECL

5 PS Power save control I CMOS

6 SW Sub charge pump control I CMOS

7V CC Power supply pin ¾¾

8 REF Reference frequency input I ECL

9 SELECT IF frequency changeover control I CMOS

10 LD Lock detection output O CMOS

n Electrical Characteristics at VCC = 2.7 V, fREFIN = 19.68 MHz, VREFIN = 0.6 V[p-p], Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Consumption current 1 I CC1 SELECT = low ¾ 0.90 1.21 mA At 260.76 MHz lock Consumption current 2 I CC2 Power save mode ¾ 01 0 mA At PS = low setting Reference signal input level VREFIN fREFIN = 19.68 MHz 0.5 ¾ 1.2 V[p-p] High-level input voltage V IH 2.16 ¾ 3.30 V Low-level input voltage V IL 0 ¾ 0.4 V High-level input current I IH At VIH = 2.16 V applied - 10 1 mA Low-level input current I IL At VIL = 0 V applied - 10 1 mA

ICs for Mobile Communication AN8538SH n Electrical Characteristics at VCC = 2.7 V, fREFIN = 19.68 MHz, VREFIN = 0.6 V[p-p], Ta = 25°C (continued)

• Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Symbol Conditions Min Typ Max Unit Consumption current 1 I CC1 SELECT = low ¾ 0.90 1.34 mA At 260.76 MHz lock Consumption current 2 I CC2 SELECT = high ¾ 0.90 1.34 mA At 260.76 MHz lock IF input level V IFIN fIFIN = 100 MHz to 350 MHz - 10 ¾+ 2d B m Reference signal input level VREFIN fREFIN = 10 MHz to 25 MHz 0.5 ¾ 1.2 V[p-p] Output leak current I OZ At VOZ = 0 V, 2.7 V applied - 1.0 ¾+ 1.0 mA Pin No. Equivalent circuit Description

1 Pin 1: CPSUB

2 Pin 2: CP

3 ¾ GND

4 IFIN

n Terminal Equivalent Circuits SW 4.5 kW 4.5 kW Pin 5

AN8538SH ICs for Mobile Communication Pin No. Equivalent circuit Description 7 ¾ V CC

8 REF

9 Refer to pin 5 SELECT

n Terminal Equivalent Circuits (continued) 10 kW 10 kW n Application Notes 1. Input level characteristics 1) IF input level characteristics Input frequency (MHz ) Input level (dBm) -40 -30 -20 -10 75 100 150 200 250 300 350 Ta = 85°C Ta = 25°C V CC = 2.55 V to 3.3V Upper limit Lower limit Ta = -30°C

ICs for Mobile Communication AN8538SH n Application Notes (continued) 1. Input level characteristics (continued) 2) REF input level characteristics 2. Characteristics specification 1) IF select specification SELECT pin control enables you to switch IF as below: SELECT = low fi fOUT = 260.76 MHz, fR = 60 kHz (P = 16, N = 271, A = 10, R = 328) SELECT = highfi 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 ms. About detection accuracy, when a dividing output shifts by –(51 · 3) ns for fREF = 60 kHz, it generates an unlock output. SELECT = low : Detection time is 16 ms. About detection accuracy, when a dividing output shifts by –(51 · 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. Input frequency (MHz ) Input level (dBm) -30 -20 -10 0 5 10 15 20 25 30 Ta = 85°C Ta = 25°C V CC = 2.55 V to 3.3V Ta = -30°C Upper limit Lower limit