SA615D datasheet(2/14 Pages) PHILIPS

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Philips Semiconductors

Product specification

SA615

High performance low power mixer FM IF system

1997 Nov 07

853-1402 18665

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 Signetics’ SA602 and SA604A, but

features a higher mixer input intercept point, higher IF bandwidth

(25MHz) and temperature compensated RSSI and limiters

permitting higher performance application. The SA615 is available in

20-lead dual-in-line plastic, 20-lead SOL (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 will meet the EIA

specifications for AMPS and TACS cellular radio applications.

For additional technical information please refer to application notes

AN1994, 1995 and 1996, which include example application

diagrams, a complete overview of the product, and artwork for

reference.

FEATURES

• Low power consumption: 5.7mA typical at 6V

• Mixer input to >500MHz

• Mixer conversion power gain of 13dB at 45MHz

• Mixer noise figure of 4.6dB at 45MHz

• XTAL oscillator effective to 150MHz (L.C. oscillator to 1GHz local

oscillator can be injected)

• 102dB of IF Amp/Limiter gain

• 25MHz limiter small signal bandwidth

• Temperature compensated logarithmic Received Signal Strength

Indicator (RSSI) with a dynamic range in excess of 90dB

• Two audio outputs – muted and unmuted

• Low external component count; suitable for crystal/ceramic/LC

filters

• Excellent sensitivity: 0.22µV into 50Ω matching network for 12dB

SINAD (Signal to Noise and Distortion ratio) for 1kHz tone with RF

at 45MHz and IF at 455kHz

• SA615 meets cellular radio specifications

• ESD hardened

PIN CONFIGURATION

LIMITER DECOUPLING

IF AMP DECOUPLING

QUADRATURE IN

UNMUTED AUDIO OUT

MUTED AUDIO OUT

RFIN

RF BYPASS

XTAL OSC

MUTEIN

RSSIOUT

MIXER OUT

IF AMP IN

IF AMP OUT

GND

LIMITER IN

LIMITER OUT

VCC

N, D and DK Packages

NOTE:

See back page for package dimensions

SR00341

Figure 1. Pin Configuration

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

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

ORDER CODE

DWG #

20-Pin Plastic Dual In-Line Package (DIP)

–40 to +85

°C

SA615N

SOT146-1

20-Pin Plastic Small Outline Large (SOL) package

–40 to +85

°C

SA615D

SOT108-1

20-Pin Plastic Shrink Small Outline Package (SSOP)

–40 to +85

°C

SA615DK

SOT266-1

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