U2716B-MFS
| Model | U2716B-MFS |
| Description | Analog Circuit, |
| PDF file | Total 11 pages (File size: 166K) |
| Chip Manufacturer | TEMIC |
U2761B
DECT RF / IF IC
Description
The U2761B is an integrated circuit manufactured in
TEMIC Semiconductors’ UHF5S technology, designed
for DECT application. It contains rejection mixer, IF
amplifier, FM demodulator working at f = f
IF
/2, base-
band filter, RSSI, TX preamplifier and power-ramping
generator for power amplifier.
Features
D
Supply-voltage range 2.7 V to 4.7 V
D
Low current consumption
D
Few external components
D
On-chip baseband filter
D
LO switch and TX preamplifier
D
Ramp-signal generator for power amplifier
Block Diagram
QUAD_TANK2
IF_TANK1
IF_TANK2
QUAD_TANK1
DEMOD_OUT
VS1
VS2
IF_IN1
IF_IN2
IF amp 1
IF amp 2
Demodulator
Bandgap
MIXER_IN1
MIXER_IN2
IR mixer
T/R switch
TX driver
TX_RF_OUT
Ramp
generator
Control
logic
+
–
OpAmp
OP_OUT
MIXER_OUT1
RAMP_SET
TX_ON
MIXER_OUT2
RAMP_OUT
RX_ON
OP_N
LO_IN2
LO_IN1
OP_P
14657
Figure 1. Block diagram
Ordering Information
Extended Type Number
U2761B–MFS
U2761B-MFSG3
Package
SSO28
SSO28
Remarks
Tube
Taped and reeled
Rev. A5, 29-May-00
1 (11)
Preliminary Information
