器件名称: U2782B-AFSG3
功能描述: 1100 MHz Twin PLL
文件大小: 159.2KB 共10页
简 介:U2782B
1100 MHz Twin PLL
Description
The IC U2782B is a low power twin PLL manufactured with TEMIC’s advanced UHF process. The maximum operating frequency is 1100 MHz for both PLLs. It features a wide supply voltage range from 2.7 to 5.5 V. Prescaler 64/65 and power down function for both PLL’s is integrated. Applications are CT1, IS54, JDC etc. Electrostatic sensitive device. Observe precautions for handling.
Features
D Very low current consumption (typical 3 V/11 mA) D Supply voltage range 2.7 to 5.5 V D Maximum input frequency: 1100 for both PLLs D 2 pins for separate power down functions D Output for PLL lock status D Prescaler 64/65 for both inputs D SSO20 package D ESD protected according to MIL-STD 833
method 3015 cl.2
Benefits
D Low current consumption leads to extended talk time D Twin PLL saves costs and space D One foot print for all TEMIC twin PLL’s saves designin time
Block Diagram
1 VS analog VS digital DGND AGND OSCi OSCo 4 2 6 15 7 8 Oscillator Control functions 16 bit latch Lock select 10 Lock Port2 Ports Power down Test 9 14 20 5I/Port 0 HPD1/Port1 HPD2/Port4 Port3
on / off divide by 2
12 bit latch 1 12 bit reference divider 1 17 bit latch 1 Phase detector 1 Charge pump 1 3 17 CP1 VScp
RFi1
5
64 / 65 Prescaler 1
17 bit main divider 1
Clock Data Enable
11 3 bit 12 13 Load control
17 bit Shift register
Pump bias
19
Iset
12 bit latch 2 12 bit reference divider 2 17 bit latch 2 Phase detector 2 Charge pump 2 18
94 8916
CP2
RFi2
16
64 / 65 Pre……
