Document
SA615
High performance low power mixer FM IF system
Rev. 4 — 14 November 2014
Product data sheet
1. General description
The SA615 is a high performance monolithic low-power FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, muting, logarithmic Received Signal Strength Indicator (RSSI), and voltage regulator. The SA615 combines the functions of NXP Semiconductors SA602A and SA604A, but features a higher mixer input intercept point, higher IF bandwidth (25 MHz) and temperature compensated RSSI and limiters permitting higher performance application. The SA615 is available in 20-lead SO (surface-mounted miniature package) and 20-lead SSOP (shrink small outline package).
The SA605 and SA615 are functionally the same device types. The difference between the two devices lies in the guaranteed specifications. The SA615 has a higher ICC, lower input third-order intercept point, lower conversion mixer gain, lower limiter gain, lower AM rejection, lower SINAD, higher THD, and higher RSSI error than the SA615. Both the SA605 and SA615 devices meet the EIA specifications for AMPS and TACS cellular radio applications.
2. Features and benefits
Low power consumption: 5.7 mA typical at 6 V Mixer input to >500 MHz Mixer conversion power gain of 13 dB at 45 MHz Mixer noise figure of 4.6 dB at 45 MHz XTAL oscillator effective to 150 MHz (L/C oscillator to 1 GHz local oscillator can be
injected) 102 dB of IF amplifier/limiter gain 25 MHz limiter small signal bandwidth Temperature-compensated logarithmic Received Signal Strength Indicator (RSSI) with
a dynamic range in excess of 90 dB Two audio outputs — muted and unmuted Low external component count; suitable for crystal/ceramic/LC filters Excellent sensitivity: 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 SA615 meets cellular radio specifications ESD hardened
NXP Semiconductors
SA615
High performance low power mixer FM IF system
3. Applications
Cellular radio FM IF High performance communications receivers Single conversion VHF/UHF receivers SCA receivers RF level meter Spectrum analyzer Instrumentation FSK and ASK data receivers Log amps Wideband low current amplification
4. Ordering information
Table 1. Ordering information
Type number Topside marking
Package Name
SA615D/01
SA615D SO20
SA615DK/01 SA615DK SSOP20
Description plastic small outline package; 20 leads; body width 7.5 mm plastic shrink small outline package; 20 leads; body width 4.4 mm
Version SOT163-1 SOT266-1
4.1 Ordering options
Table 2. Ordering options
Type number Orderable part number
Package Packing method
SA615D/01
SA615D/01,112 SO20
SA615D/01,118 SO20
SA615DK/01 SA615DK/01,112 SSOP20
SA615DK/01,118 SSOP20
Standard marking * IC’s tube - DSC bulk pack
Reel 13” Q1/T1 *Standard mark SMD
Standard marking * IC’s tube - DSC bulk pack
Reel 13” Q1/T1 *Standard mark SMD
Minimum order quantity
1520
Temperature Tamb = 40 C to +85 C
2000
Tamb = 40 C to +85 C
1350
Tamb = 40 C to +85 C
2500
Tamb = 40 C to +85 C
SA615
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 14 November 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
2 of 26
NXP Semiconductors
5. Block diagram
SA615
High performance low power mixer FM IF system
MIXER_OUT IF_AMP_DECOUPL IF_AMP_IN IF_AMP_DECOUPL IF_AMP_OUT GND LIMITER_IN LIMITER_DECOUPL LIMITER_DECOUPL LIMITER_OUT
20 19 18 17 16 15 14 13 12 11
mixer
IF amp
OSCILLATOR
limiter
RSSI
quad
EB
mute
1 2 3 4 5 6 7 8 9 10
RF_IN RF_BYPASS
OSC_OUT OSC_IN
MUTE_INPUT VCC
RSSI_OUT MUTED_AUD_OUTP UNMUTED_AUD_OUTP
QUADRATURE_IN
Fig 1. Block diagram
aaa-012909
SA615
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 14 November 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
3 of 26
NXP Semiconductors
6. Pinning information
6.1 Pinning
SA615
High performance low power mixer FM IF system
RF_IN 1 RF_BYPASS 2
OSC_OUT 3 OSC_IN 4
MUTE_INPUT 5 VCC 6
RSSI_OUT 7 MUTE_AUD_OUTP 8 UNMUTE_AUD_OUTP 9 QUADRATURE_IN 10
Fig 2. Pin configuration for SO20
SA615D/01
20 MIXER_OUT 19 IF_AMP_DECOUPL 18 IF_AMP_IN 17 IF_AMP_DECOUPL 16 IF_AMP_OUT 15 GND 14 LIMITER_IN 13 LIMITER_DECOUPL 12 LIMITER_DECOUPL 11 LIMITER_OUT
aaa-013002
RF_IN 1 RF_BYPASS 2
OSC_OUT 3 OSC_IN 4
MUTE_INPUT 5 VCC 6
RSSI_OUT 7 MUTE_AUD_OUTP 8 UNMUTE_AUD_OUTP 9 QUADRATURE_IN 10
SA615DK/01
20 MIXER_OUT 19 IF_AMP_DECOUPL 18 IF_AMP_IN 17 IF_AMP_DECOUPL 16 IF_AMP_OUT 15 GND 14 LIMITER_IN 13 LIMITER_DECOUPL 12 LIMITER_DECOUPL 11 LIMITER_OUT
aaa-013003
Fig 3. Pin configuration for SSOP20
SA615
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 14 November 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
4 of 26
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