ICs for Mobile Communication AN8539SH 300 MHz-band single PLL IC ■ Overview 5 6 0.625±0.10 0.625±0.10 ■ Applications 1.5±0.2 0.5±0.2 • Cellular phone 3.0±0.30 10 0.1±0.1 • To be switched to two frequencies. (Select by SELECT pin.) • Analog SW built-in • ICC = 900 µA 1 0.15+0.1 –0.05 0.5 ■ Features 0.2±0.1 Unit: mm The AN8539SH is a 300 MHz-band, 2nd local OSC PLL IC designed for a cellular phone which allows IF switching to high or low. 4.3±0.30 6.3±0.30 SSOP010-P-0225 6 SW VCC 7 REF 8 9 10 LD SELECT ■ Block Diagram Lock detection 14-bit R counter 15-bit N counter Phase comparator 1/16, 1/17 prescaler 5 PS 4 IFIN 3 GND 2 CP CPSUB 1 Selector 1 AN8539SH ICs for Mobile Communication ■ Pin Descriptions Pin No. Symbol 1 CPSUB 2 CP 3 Description I/O Level Sub charge pump output O CMOS Charge pump output O CMOS GND GND pin 4 IFIN IF input I ECL 5 PS Power save control I CMOS 6 SW Sub charge pump control I CMOS 7 VCC Power supply pin 8 REF Reference frequency input I ECL 9 SELECT IF frequency changeover control I CMOS 10 LD Lock detection output O CMOS ■ Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 Operating ambient temperature Storage temperature *1 *1 Symbol Rating Unit VCC 3.6 V ICC 3.5 mA PD 12.6 mW Topr −30 to +85 °C Tstg −55 to +125 °C Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: Ta = 85°C ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VCC 2.55 to 3.3 V ■ Electrical Characteristics at VCC = 2.7 V, fREFIN = 12.8 MHz, VREFIN = 0.6 V[p-p], Ta = 25°C Parameter Conditions Min Typ Max Unit Consumption current 1 ICC1 SELECT = high At 178 MHz lock 0.90 1.21 mA Consumption current 2 ICC2 Power save mode At PS = GND setting 0 10 µA fREFIN = 12.8 MHz 0.5 1.2 V[p-p] Reference signal input level 2 Symbol VREFIN High-level input voltage VIH 2.16 3.30 V Low-level input voltage VIL 0 0.54 V High-level input current IIH At VIH = 2.16 V applied −1 0 1 µA Low-level input current IIL At VIL = 0 V applied −1 0 1 µA ICs for Mobile Communication AN8539SH ■ Electrical Characteristics at VCC = 2.7 V, fREFIN = 12.8 MHz, VREFIN = 0.6 V[p-p], Ta = 25°C (continued) • Design reference data at Ta = −30°C to 80°C 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 ICC1 SELECT = high, at 178 MHz lock 0.90 1.34 mA Consumption current 2 ICC2 SELECT = low, at 129.55 MHz lock 0.83 1.27 mA IF input level VIFIN fIFIN = 100 MHz to 350 MHz − 10 +2 dBm VREFIN fREFIN = 10 MHz to 25 MHz 0.5 1.2 V[p-p] Output leak current IOZ At VOZ = 0 V, 2.7 V applied − 1.0 +1.0 µA Charge pump output current 1 IOH At VOH = 2.16 V applied − 0.67 − 0.48 − 0.30 Charge pump output current 2 IOL At VOL = 0.54 V applied Reference signal input level 0.32 0.51 0.72 mA mA ■ Terminal Equivalent Circuits Pin No. Equivalent circuit Description 1 2 Pin 1: CPSUB Pin 2: CP 2 CP 1 CPSUB SW 3 GND 4 IFIN input 4 4.5 kΩ 4.5 kΩ 5 PS input Pin 5 9 6 SW input 6 3 AN8539SH ICs for Mobile Communication ■ Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit 7 Description VCC 8 REF 10 kΩ 8 9 Refer to pin 5 SELECT inpuit 10 LD output 10 ■ Application Notes 1. Input level characteristics 1) IF input level characteristics VCC = 2.55 V to 3.3V Upper limit 10 Ta = −30°C, 25°C, 85°C Input level (dBm) 0 −10 Lower limit Ta = 85°C Ta = 25°C −20 Ta = −30°C −30 −40 50 100 150 200 250 300 Input frequency (MHz) 4 350 ICs for Mobile Communication AN8539SH ■ Application Notes (continued) 1. Input level characteristics (continued) 2) REF input level characteristics VCC = 2.55 V to 3.3V Upper limit 20 Ta = −30°C, 25°C, 85°C Input level (dBm) 10 0 Lower limit Ta = 25°C Ta = −30°C −10 −20 Ta = 85°C −30 0 5 10 15 20 25 30 Input frequency (MHz) 2. Characteristics specification 1) IF select specification SELECT pin control enables you to switch IF as below: SELECT = low → fOUT = 129.55 MHz, fR = 50 kHz (P = 16, N = 161, A = 15, R = 256) SELECT = high → fOUT = 178 MHz, fR = 400 kHz (P = 16, N = 27, A = 13, R = 32) 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 2.6 µs. About detection accuracy, when a dividing output shifts by ±(78 × 3) ns for fREF = 400 kHz, it generates an unlock output. SELECT = low : Detection time is 20 µs. About detection accuracy, when a dividing output shifts by ±(78 × 3) ns for fREF = 50 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 AN8539SH ICs for Mobile Communication LD SW VCC SELECT fREFIN ■ Application Circuit Example 1 000 pF 6 7 8 REF 9 10 1 000 pF Lock detection 14-bit R counter Phase comparator 15-bit N counter 1/16, 1/17 prescaler 5 PS IFIN 4 GND 3 CP 2 CPSUB 1 Selector 1.8 kΩ 1 000 pF 4.7 kΩ 47 Ω 0.056 µF 1.5 kΩ 6 800 pF fIFIN 1 000 pF fOUT VCO 6