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U2761B

Description
RF and Baseband Circuit, Bipolar, PDSO28, SSO-28
CategoryWireless rf/communication    Telecom circuit   
File Size162KB,11 Pages
ManufacturerAtmel (Microchip)
Download Datasheet Parametric View All

U2761B Overview

RF and Baseband Circuit, Bipolar, PDSO28, SSO-28

U2761B Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerAtmel (Microchip)
Parts packaging codeSOIC
package instructionSSOP, SSOP28,.25
Contacts28
Reach Compliance Codeunknown
Is SamacsysN
JESD-30 codeR-PDSO-G28
JESD-609 codee0
length9.055 mm
Number of functions1
Number of terminals28
Maximum operating temperature85 °C
Minimum operating temperature-25 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP28,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply3 V
Certification statusNot Qualified
Nominal supply voltage3 V
surface mountYES
technologyBIPOLAR
Telecom integrated circuit typesCORDLESS TELEPHONE RF AND BASEBAND CIRCUIT
Temperature levelOTHER
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width4.4 mm
Base Number Matches1
U2761B
DECT RF / IF IC
Description
The U2761B is an integrated circuit manufactured in
Atmel Wireless & Microcontrollers’ UHF5S technology,
designed for DECT application. It contains rejection
mixer, IF amplifier, FM demodulator working at f = f
IF
/2,
baseband filter, RSSI, TX preamplifier and power-ramp-
ing 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
RAMP_OUT
MIXER_OUT2
RX_ON
OP_N
LO_IN2
OP_P
LO_IN1
14657
Figure 1. Block diagram
Ordering Information
Extended Type Number
U2761B–MFS
U2761B-MFSG3
SSO28
SSO28
Package
Tube
Taped and reeled
Remarks
Rev. A6, 17-Aug-00
1 (11)
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