sa617dk NXP Semiconductors, sa617dk Datasheet - Page 2

• Manufacturer Part Number: sa617dk
• Description: Low-voltage High Performance Mixer Fm If System
• Manufacturer: NXP Semiconductors

Philips Semiconductors
DESCRIPTION
The SA617 is a low voltage high performance monolithic FM IF
system incorporating a mixer/oscillator, two limiting intermediate
frequency amplifiers, quadrature detector, logarithmic received
signal strength indicator (RSSI), voltage regulator and audio and
RSSI op amps. The SA617 is available in 20-lead SSOP package.
The SA617 was designed for portable communication applications
and will function down to 2.7V. The RF section is similar to the
famous SA605. The audio output has an internal amplifier with the
feedback pin accessible. The RSSI output is buffered. The SA617
also has an extra limiter output. This signal is buffered from the
output of the limiter and can be used to perform frequency check.
This is accomplished by comparing a reference frequency with the
frequency check signal using a comparator to a varactor or PLL at
the oscillator inputs.
FEATURES
ORDERING INFORMATION
1997 Nov 07
20-Pin Plastic Shrink Small Outline Package (SSOP) (Surface-mount)
Low power consumption: 3.5mA typical at 3V
Mixer input to >150MHz
Mixer conversion power gain of 17dB at 45MHz
XTAL oscillator effective to 150MHz (L.C. oscillator or external
oscillator can be used at higher frequencies)
102dB of IF Amp/Limiter gain
2MHz IF amp/limiter small signal bandwidth
Temperature compensated logarithmic Received Signal Strength
Indicator (RSSI) with a 80dB dynamic range
Low external component count; suitable for crystal/ceramic/LC
filters
Excellent sensitivity: 0.31 V into 50 matching network for 12dB
SINAD (Signal to Noise and Distortion ratio) for 1kHz tone, 8kHz
deviation with RF at 45MHz and IF at 455kHz
SA617 meets cellular radio specifications
Audio output internal op amp
RSSI output internal op amp
Buffered frequency check output
Low-voltage high performance mixer FM IF system
DESCRIPTION
2
PIN CONFIGURATION
APPLICATIONS
TEMPERATURE RANGE
Internal op amps with rail-to-rail outputs
ESD protection: Human Body Model 2kV
Portable cellular radio FM IF
Cordless phones
Narrow band cellular applications (NAMPS/NTACS)
RF level meter
Spectrum analyzer
Instrumentation
FSK and ASK data receivers
Log amps
Portable high performance communication receivers
Single conversion VHF receivers
Wireless systems
FREQ CHECK/LIM OUT (–) 9
RF IN– DECOUPLING
AUDIO FEEDBACK
-40 to +85 C
QUADRATURE IN 10
AUDIO OUT
RSSI OUT
OSC
OSC
RF IN+
OUT
V
Robot Model 200V
Figure 1. Pin Configuration
CC
IN
1
2
3
4
5
6
8
7
DK Package
ORDER CODE
SA617DK
20 MIXER OUT
19
18 IF AMP IN
17
16 IF AMP OUT
15 GND
14 LIMITER IN
13
12
11
IF AMP DECOUPLING
IF AMP DECOUPLING
LIMITER DECOUPLING
LIMITER DECOUPLING
LIM OUT (+)
Product specification
853-1678 18665
SA617
SOT266-1
DWG #
SR00405