Document
ICs for Mobile Communication
AN8539SH
300 MHz-band single PLL IC
s Overview
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.
0.5
1 10
Unit: mm
0.2±0.1
• Cellular phone
0.5±0.2 4.3±0.30 6.3±0.30
SSOP010-P-0225
s Block Diagram
SELECT
REF
VCC
10
LD
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
SW
0.15+0.1 –0.05
s Applications
0.625±0.10
1.5±0.2
• To be switched to two frequencies. (Select by SELECT pin.) • Analog SW built-in • ICC = 900 µA
0.1±0.1
0.625±0.10
s Features
5
6
3.0±0.30
1
AN8539SH
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 = 25°C. *2: Ta = 85°C
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 = 12.8 MHz, VREFIN = 0.6 V[p-p], Ta = 25°C
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 = high At 178 MHz lock Power save mode At PS = GND setting fREFIN = 12.8 MHz Min 0.5 2.16 0 −1 −1 Typ 0.90 0 0 0 Max 1.21 10 1.2 3.30 0.54 1 1 Unit mA µA V[p-p] V V µA µA
2
ICs for Mobile Communication
AN8539SH
s 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 Consumption current 1 Consumption current 2 IF input level Reference signal input level Output leak current Charge pump output current 1 Charge pump output current 2
Symbol ICC1 ICC2 VIFIN VREFIN IOZ IOH IOL
Conditions SELECT = high, at 178 MHz lock SELECT = low, at 129.55 MHz lock fIFIN = 100 MHz to 350 MHz fREFIN = 10 MHz to 25 MHz At VOZ = 0 V, 2.7 V applied At VOH = 2.16 V applied At VOL = 0.54 V applied
Min − 10 0.5 − 1.0
Typ 0.90 0.83
Max 1.34 1.27 +2 1.2 +1.0
Unit mA mA dBm V[p-p] µA mA mA
− 0.67 − 0.48 − 0.30 0.32 0.51 0.72
s Terminal Equivalent Circuits
Pin No. 1 2 Equivalent circuit Pin 1: CPSUB Pin 2: CP Description
2 CP 1 CPSUB SW
3 4
GND IFIN input
4
4.5 kΩ 4.5 kΩ
5 Pin 5 9
PS input
6
6
SW input
3
AN8539SH
s Terminal Equivalent Circuits (continued)
Pin No. 7 8 Equivalent circuit
ICs for Mobile Communication
Description VCC REF
10 kΩ
8
9 10
Refer to pin 5
SELECT inpuit LD output
10
s Application Notes
1. Input level characteristics 1) IF input level characteristics
Upper limit VCC = 2.55 V to 3.3V
10
Ta = −30°C, 25°C, 85°C
0
Input level (dBm)
−10 Lower limit −20 Ta = −30°C −30 Ta = 85°C
Ta = 25°C
−40 50 100 150 200 250 300 350
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
AN8539SH
20
Upper limit Ta = −30°C, 25°C, 85°C
10
Input level (dBm)
0 Lower limit Ta = 25°C −10 Ta = −30°C
−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.