SA614A
Low power FM IF system
Rev. 4 — 14 February 2014
Product data sheet
1. General description
The SA614A is an imp...
SA614A
Low power FM IF system
Rev. 4 — 14 February 2014
Product data sheet
1. General description
The SA614A is an improved monolithic low-power FM IF system. It incorporates two limiting intermediate frequency amplifiers, quadrature detector, muting, logarithmic received signal strength indicator, and voltage
regulator. The SA614A features higher IF bandwidth (25 MHz) and temperature compensated RSSI and limiters permitting higher performance application compared with the SA604. The SA614A is available in a SO (surface-mounted miniature) package.
2. Features and benefits
Low power consumption: 3.3 mA typical Temperature compensated logarithmic RSSI with a 90 dB dynamic range Two audio outputs - muted and unmuted Low external component count; suitable for crystal/ceramic filters Excellent sensitivity: 1.5 V across inputs pins (0.22 V into 50 matching network)
for 12 dB SINAD (SIgnal-to-Noise-And-Distortion ratio) for 1 kHz tone with RF at 45 MHz and IF at 455 kHz SA614A meets cellular radio specifications
3. Applications
Cellular radio FM IF High performance communication receiver Intermediate frequency amplification and detection up to 25 MHz RF level meter Spectrum analyzer Instrumentation FSK and ASK data receivers
4. Ordering information
Table 1. Ordering information Tamb = 40 C to +85 C
Type number Package
Name
Description
SA614AD
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SA614AHR
HXQFN16 plastic thermal en...