SA605
High performance low power mixer FM IF system
Rev. 5 — 14 November 2014
Product data sheet
1. General description
The SA605 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
SA605 combines the functions of NXP 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 SA605 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 I
CC
, 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 SA605. 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
SA605 meets cellular radio specifications
ESD hardened
NXP Semiconductors
SA605
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
Topside
marking
SA605D
SA605DK
Package
Name
SO20
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
Type number
SA605D/01
SA605DK/01
4.1 Ordering options
Table 2.
Ordering options
Orderable
part number
SA605D/01,112
SA605D/01,118
SA605DK/01
SA605DK/01,112
SA605DK/01,118
Package
Packing method
Minimum
order
quantity
1520
2000
1350
2500
Temperature
Type number
SA605D/01
SO20
SO20
SSOP20
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
T
amb
=
40 C
to +85
C
T
amb
=
40 C
to +85
C
T
amb
=
40 C
to +85
C
T
amb
=
40 C
to +85
C
SA605
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 5 — 14 November 2014
2 of 25
NXP Semiconductors
SA605
High performance low power mixer FM IF system
6. Pinning information
6.1 Pinning
RF_IN
RF_BYPASS
OSC_OUT
OSC_IN
MUTE_INPUT
V
CC
RSSI_OUT
MUTE_AUD_OUTP
UNMUTE_AUD_OUTP
1
2
3
4
5
6
7
8
9
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-012910
SA605D/01
QUADRATURE_IN 10
Fig 2.
Pin configuration for SO20
RF_IN
RF_BYPASS
OSC_OUT
OSC_IN
MUTE_INPUT
V
CC
RSSI_OUT
MUTE_AUD_OUTP
UNMUTE_AUD_OUTP
1
2
3
4
5
6
7
8
9
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-012911
SA605DK/01
QUADRATURE_IN 10
Fig 3.
Pin configuration for SSOP20
SA605
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 5 — 14 November 2014
4 of 25
NXP Semiconductors
SA605
High performance low power mixer FM IF system
6.2 Pin description
Table 3.
Symbol
RF_IN
RF_BYPASS
OSC_OUT
OSC_IN
MUTE_INPUT
V
CC
RSSI_OUT
MUTED_AUD_OUTP
UNMUTED_AUD_OUTP
QUADRATURE_IN
LIMITER_OUT
LIMITER_DECOUPL
LIMITER_DECOUPL
LIMITER_IN
GND
IF_AMP_OUT
IF_AMP_DECOUPL
IF_AMP_IN
IF_AMP_DECOUPL
MIXER_OUT
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Description
RF input
RF bypass pin
oscillator output
oscillator input
mute input
positive supply voltage
RSSI output
mute audio output
unmute audio output
quadrature detector input terminal
limiter amplifier output
limiter amplifier decoupling pin
limiter amplifier decoupling pin
limiter amplifier input
ground; negative supply
IF amplifier output
IF amplifier decoupling pin
IF amplifier input
IF amplifier decoupling pin
mixer output
SA605
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 5 — 14 November 2014
5 of 25
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