LTC5531ES6#PBF Linear Technology, LTC5531ES6#PBF Datasheet - Page 10

• Manufacturer Part Number: LTC5531ES6#PBF
• Description: IC, PRECISION RF DETECTOR, 7GHZ, SOT23-6
• Manufacturer: Linear Technology

Specifications of LTC5531ES6#PBF

• Frequency Range: 300MHz To 7GHz
• Power Range: -32dBm To 10dBm
• Supply Current: 500µA
• Supply Voltage Range: 2.7V To 6V
• Rf Ic Case Style: SOT-23
• No. Of Pins: 6
• Rf Type: General Purpose
• Pin Count: 6
• Screening Level: Industrial
• Package Type: TSOT-23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC5531
APPLICATIO S I FOR ATIO
Applications
The LTC5531 can be used as a self-standing signal strength
measuring receiver for a wide range of input signals from
–32dBm to 10dBm for frequencies from 300MHz to 7GHz.
Operation at higher frequencies is achievable. Consult
factory for more information.
The LTC5531 can be used as a demodulator for AM and
ASK modulated signals with data rates up to 2MHz.
Depending on specific application needs, the RSSI output
can be split between two branches, providing AC-coupled
10
U
DISABLE
U
Figure 1. Mobile Phone Tx Power Control Application with a Capacitive Tap
ENABLE
1
2
3
W
LTC5531ES6
RF
GND
SHDN
IN
V
V
V
OUT
CC
OS
6
5
4
U
OFFSET
ADJUSTMENT
0.1 F
data (or audio) output and DC-coupled RSSI output for
signal strength measurements and AGC.
The LTC5531 can be used for RF power detection and
control. Figure 1 is an example of transmitter power
control, using the LTC5531 with a capacitive tap to the
power amplifier. A 0.5pF capacitor (C1) followed by a
200 resistor (R1) forms a coupling circuit with about
20dB loss at 900MHz referenced to the LTC5531 RF input
pin. In the actual product implementation, component
values for the capacitive tap may be different depending on
parts placement, PCB parasitics and parameters of the
antenna.
MOBILE
PHONE
DSP
Li-Ion
CELL BAND
PCS BAND
MODULE
VPC
Tx PA
BSE
200
1%
R1
DIPLEXER
0.5pF
0.05pF
C1
5532 F01
5531f