Document
SA604A
High-performance low-power FM IF system
Rev. 4.3 — 13 July 2016
Product data sheet
1. General description
The SA604A is an improved monolithic low-power FM IF system incorporating two limiting intermediate frequency amplifiers, quadrature detector, muting, logarithmic received signal strength indicator, and voltage regulator. The SA604A features higher IF bandwidth (25 MHz) and temperature compensated RSSI and limiters providing wide RSSI dynamic range, high IF/limiter gain and overall stability. The SA604A is available in an SO16 (surface-mounted miniature) and HXQFN16 package.
2. Features and benefits
Low power consumption: 3.3 mA typical Temperature compensated logarithmic Received Signal Strength Indicator (RSSI) with
a dynamic range in excess of 90 dB Two audio outputs — muted and un-muted Low external component count; suitable for crystal/ceramic filters Excellent sensitivity: 1.5 V across input pins (0.22 V into 50 matching network) for
12 dB SINAD (Signal-to-Noise and Distortion ratio) at 455 kHz SA604A meets cellular radio specifications
3. Applications
Cellular radio FM IF High-performance communications receivers Intermediate frequency amplification and detection up to 25 MHz RF level meter Spectrum analyzer Instrumentation FSK and ASK data receivers
NXP Semiconductors
SA604A
High-performance low-power FM IF system
4. Ordering information
Table 1. Ordering information
Type number
Topside marking
Package Name
SA604AD/01 SA604AD SO16
SA604AD/02 SA604AD SO16
SA604AHR
04A
HXQFN16
Description plastic small outline package; 16 leads; body width 3.9 mm plastic small outline package; 16 leads; body width 3.9 mm plastic thermal enhanced extremely thin quad flat package; no leads; 16 terminals; body 3 3 0.5 mm
Version SOT109-1 SOT109-1 SOT1039-2
4.1 Ordering options
Table 2. Ordering options
Type number
Orderable part number
Package Packing method
SA604AD/01
SA604AD/02 SA604AHR
SA604AD/01,112 SA604AD/01,118 SA604AD/02J SA604AHRZ
SO16
Standard marking * IC’s tube - DSC bulk pack
SO16
Reel 13” Q1/T1 *Standard mark SMD
SO16
Reel 13” Q1/T1 *Standard mark SMD
HXQFN16 Reel 7” Q2/T3 *Standard mark SMD
Minimum order quantity
1000
Temperature Tamb = 40 C to +85 C
2500
Tamb = 40 C to +85 C
2500
Tamb = 40 C to +85 C
1500
Tamb = 40 C to +85 C
SA604A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4.3 — 13 July 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
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NXP Semiconductors
5. Block diagram
SA604A
High-performance low-power FM IF system
IF_AMP_INPUT IF_AMP_DECOUPL IF_AMP_OUTPUT GND LIMITER_INPUT LIMITER_DECOUPL LIMITER_DECOUPL LIMITER_OUTPUT
16(13) 15(12) 14(11) 13(10) 12(9) 11(8) 10(7) 9(6)
IF amp
VOLTAGE REGULATOR
SIGNAL STRENGTH INDICATOR
limiter mute
quadrature detector
1(14) 2(15) 3(16) 4(1) 5(2) 6(3) 7(4) 8(5)
IF_AMP_DECOUPL GND
MUTE_INPUT VCC
RSSI_OUTPUT MUTE_AUD_OUTP UNMUTE_AUD.