U2782B Datasheet, PDF (1/10 Pages) TEMIC Semiconductors – 1100 MHz Twin PLL

1100 MHz Twin PLL
U2782B
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
Benefits
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 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 design-
in time
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
Block Diagram
V_S analog ⁴
V_S digital ²
DGND ⁶
AGND ¹⁵
7
OSCi
OSCo ⁸
Oscillator
Power
down Test
Control functions
16 bit latch
Ports
Lock
select
1
5I/Port 0
9
HPD1/Port1
14 _HPD2/Port4
Port3
20
10 _{Lock Port2}
on / off
divide by 2
RFi1 ⁵ 64 / 65 Prescaler 1
12 bit latch 1
12 bit reference divider 1
17 bit latch 1
17 bit main divider 1
Phase
detector 1
Charge
pump 1
3 _CP1
V_Scp
17
11
Clock
Data ¹²
Enable ¹³
3 bit
Load control
RFi2 ¹⁶ _{64 / 65 Prescaler 2}
17 bit
Shift register
12 bit latch 2
12 bit reference divider 2
17 bit latch 2
17 bit main divider 2
Figure 1.
Pump
bias
19 _Iset
Phase
detector 2
Charge
pump 2
18 _CP2
94 8916
TELEFUNKEN Semiconductors
Rev. A4, 17-Oct-97
1 (10)