Datasheet

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
SA614A
Low power FM IF system
Rev. 4 — 14 February 2014 Product data sheet
Table 1. Ordering information
T
amb
=  40  C to +85  C
Type number Package
Name Description Version
SA614AD SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
SA614AHR HXQFN16 plastic thermal enhanced extremely thin quad flat package; no leads;
16 terminals; body 3  3  0.5 mm
SOT1039-2