U2762B Datasheet, PDF (1/9 Pages) TEMIC Semiconductors – 900-MHz ISM Band Receiver

900-MHz ISM Band Receiver
U2762B
Description
The receiver IC U2762B-B is specifically designed for
cordless telephone applications in the 900-MHz ISM
band. It is manufactured using TEMIC’s advanced UHF
process. The IC consists of a 900-MHz RF amplifier and
mixer, 10.7-MHz IF amplifier, limiter, RSSI, quadrature
demodulator and comparator for the bit-slicer function.
The device features 2.9-V operation. In conjunction with
TEMIC’s transmitter IC U2763B-B and the PLL
U2781B, a complete ISM RF IC kit is available which fits
perfectly with AMD’s PhoX controllers AM79C432A
and AM79C433.
Electrostatic sensitive device.
Observe precautions for handling.
Features
D Single-conversion receiver with 10.7-MHz IF
D Comparator for bit slicer integrated
D Temperature-compensated RSSI with 65 dB
dynamic range
D Supply-voltage range 2.7 V to 3.3 V
D Only 17 mA typical current consumption
D Few external components
D SSO28 package
Benefits
D Low filter costs due to 10.7-MHz single conversion
D Very low count of external components saves PCB
space and costs
D Low current consumption results in very long
stand-by time of approximately 7 days
Block Diagram
V_CC1 LO
REF
LO GND1 A2
in
out
V_CC2 Lim1 Lim1 Lim1 GND3 Lim2 Lim2 DEM DEM
in REF out
in REF NTank Tank
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Mix
A2
A1
RSSI
Compa–
rator
10 k Ω
Demo–
dulator
Vcc/2
+
–
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NC RSSI A1 A1 GND2 Mix V_CC3 A2 A2 Data Com Com SL DEM
REF in
out
in REF out Nin in
in out
13951
Figure 1. Block diagram
Ordering Information
Extended Type Number
U2762B-BFS
U2762B-BFSG3
Package
SSO28
SSO28
Remarks
Tubes, MOQ 600 pcs
Taped and reeled, MOQ 4000 pcs
Rev. A3, 10-Jun-98
1 (9)
Preliminary Information