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SA639DH

Low voltage mixer FM IF system with filter amplifier and data switch

Philips Electronics 

Philips Semiconductors

Low voltage mixer FM IF system with filter amplifier

and data switch

Product specification

SA639

BLOCK DIAGRAM

24 23 22 21

20 19 18 17 16 15

14 13

MIXER

IF

AMP

OSCILLATOR

GND

LIMITER

FAST

RSSI

QUAD

VCC

–+

PWR

DWN

+–

+–

E

B

RSSI

DATA

1

2

3

4

5

6

7

8

9

10

11 12

Figure 2. Block Diagram

SR00031

ABSOLUTE MAXIMUM RATINGS

SYMBOL

PARAMETER

VCC

Single supply voltage

VIN

Voltage applied to any other pin1

TSTG

TA

Storage temperature range

Operating ambient temperature range SA6392

NOTE:

1. Except logic input pins (Pins 8 and 12) which can have 6V maximum.

2. θJA Thermal impedance (DH package) 117°C/W

RATING

-0.3 to 6

-0.3 to (VCC+0.3)

-65 to +150

-40 to +85

UNITS

V

V

°C

°C

DC ELECTRICAL CHARACTERISTICS

VCC = +3V, TA = 25°C; unless otherwise stated.

SYMBOL

PARAMETER

TEST CONDITIONS

VCC Power supply voltage range

ICC

DC current drain

ICC

Standby

Input current

Input level

tON Power up time

tOFF Power down time

Power up settling time

Pin 8 = LOW, Pin 12 = HIGH

Pin 8 = HIGH, Pin 12 = HIGH

Pin 8 = LOW

Pin 8 = HIGH

Pin 8 = LOW

Pin 8 = HIGHNO TAG

RSSI valid (10% to 90%)

RSSI invalid (90% to 10%)

Data output valid

MIN

2.7

0

0.7VCC

-3σ

8.33

131.9

LIMITS

SA639

TYP

3.0

8.6

140

10

5

100

+3σ

8.87

148.1

MAX

5.5

10

500

10

4

0.3VCC

6

200

UNITS

V

mA

µA

µA

V

µs

µs

µs

Switch closed

Switch open (output tri-state)

Input current

Pin 12 = LOW, PIN 8 = LOW

Pin 12 = HIGH

Pin 12 = LOW

Pin 12 = HIGH

0

0.7 VCC

0.3 VCC

V

6

V

10

µA

4

Switch activation time

0.5

1

µs

NOTE:

1. When the device is forced in power down mode via Pin 8, the Data Switch will output a voltage close to 1.6V and the state of the switch

control input will have no effect.

1998 Feb 10

3

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