10-45
10
Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
ü
SiGe HBT
Si CMOS
0-25 dB
0-20 dB
-12-+12
17dB
6dB
PD
BW SEL2
BW SEL1
RSSI Q
RSSI I
VREF
IN I+
IN I-
DCFB I
DCFB Q
IF OUT Q
Q DATA
IN Q+
IN Q-
IF OUT I
I DATA
1
2
11
14
13
24
23
20
19
5
8
15
18
21
10
17
16
9
7
4
VGC
DC
Bias
RF2670
8MHZ DUAL BASEBAND AGC WITH
PROGRAMMABLE LOW PASS FILTERING
• Digital Cordless Telephones
• Secure Communication Links
•Wireless LANs
• Inventory Tracking
• Wireless Security
• Battery Powered Applications
The RF2670 is a monolithic integrated circuit specifically
designed for direct conversion to baseband QPSK receiv-
ers. The part provides dual baseband amplifiers with a
70dB gain range (single pin analog input) and separate I
and Q RSSI. On-chip programmable baseband filters are
incorporated into each amplifier providing 1 MHz, 2MHz,
4 MHz, or 8MHz bandwidth with a 5-pole Bessel
response. I and Q output are available in digital or analog
form. The data comparators use a self generated DC ref-
erence to track DC offsets in the received signal. The
analog outputs have a 500 mVpp swing with approxi-
mately 1.7V DC offset. A 2.0V reference voltage is also
available for A/D converters changing DC bias.
• I/Q Baseband Receivers
• 10dBto80dBGainRange
• Digital and Analog Outputs
• On-Chip Selectable IF Bandwidths
• Reference Voltage for A/D Converter
• 2.7V to 3.6V Operation
RF2670
8MHz Dual Baseband AGC with Programmable Low
Pass Filtering
RF2670PCBA
Fully Assembled Eval Board.
10
Rev A4 010820
.069
.053
.050
.016
8°MAX
0°MIN
.010
.008
.157
.150
.244
.228
1
.344
.337
.012
.008
.025
.010
.004
.033
Package Style: SSOP-24
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