Philips Semiconductors

Product specification

SA605

High performance low power mixer FM IF system

2

1997 Nov 07

853-1401 18663

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 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 SA605 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

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 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.

APPLICATIONS

PIN CONFIGURATION

RFIN 1

RF BYPASS 2

XTAL OSC

3

XTAL OSC

4

MUTEIN 5

RSSIOUT 7

20 MIXER OUT

19

18 IF AMP IN

17

16 IF AMP OUT

15 GND

14 LIMITER IN

13

12

11

LIMITER OUT

VCC 6

MUTED AUDIO OUT 8

UNMUTED AUDIO OUT 9

QUADRATURE IN 10

IF AMP DECOUPLING

IF AMP DECOUPLING

LIMITER DECOUPLING

LIMITER DECOUPLING

N, D and DK Packages

SR00335

Figure 1. Pin Configuration

FEATURES

oscillator can be injected)

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

filters

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

at 45MHz and IF at 455kHz

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

ORDER CODE

DWG #

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

–40 to +85

°C

SA605N

SOT146-1

20-Pin Plastic Small Outline Large (SOL) package

–40 to +85

°C

SA605D

SOT163-1

20-Pin Plastic Shrink Small Outline Package (SSOP)

–40 to +85

°C

SA605DK

SOT266-1