SA637
DESCRIPTION
The SA637 is a low-voltage high performance monolithic digital system with high-speed RSSI incorporating a mixer, oscillator with buffered output, two limiting intermediate frequency amplifiers, fast logarithmic received signal strength indicator (RSSI), voltage regulator, RSSI op amp and power down pin. The SA637 is available in SSOP (shrink small outline package). The SA637 was designed for portable digital munication applications and will function down to 2.7V. The limiter amplifier has differential outputs with 2MHz small signal bandwidth. The RSSI output has access to the feedback pin. This enables the designer to level adjust the outputs or add filtering.
FEATURES
- VCC = 2.7 to 5.5V
- Low power receiver (3.8m A @ 3V)
- Power down mode (ICC = 110µA)
- Fast RSSI rise and fall times
- Extended RSSI range with temperature pensation
PIN CONFIGURATION
DK Packages
RFIN 1 RFIN 2 OSC E 3 OSC B 4 OSC 5 BUFFER 6 V 20 MIXER OUTPUT 19 IF AMP DECOUP 18 IF AMP IN 17 IF AMP...
