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Low Power

Narrowband FM IF

The MC3371 and MC3372 perform single conversion FM reception and

consist of an oscillator, mixer, limiting IF amplifier, quadrature discriminator,

active filter, squelch switch, and meter drive circuitry. These devices are

designed for use in FM dual conversion communication equipment. The

MC3371/MC3372 are similar to the MC3361/MC3357 FM IFs, except that a

signal strength indicator replaces the scan function controlling driver which is

in the MC3361/MC3357. The MC3371 is designed for the use of parallel LC

components, while the MC3372 is designed for use with either a 455 kHz

ceramic discriminator, or parallel LC components.

These devices also require fewer external parts than earlier products. The

MC3371 and MC3372 are available in dual鈥搃n鈥搇ine and surface mount

packaging.

鈥?/div>

Wide Operating Supply Voltage Range: VCC = 2.0 to 9.0 V

MC3371

MC3372

LOW POWER

FM IF

16

1

P SUFFIX

PLASTIC PACKAGE

CASE 648

鈥?/div>

Input Limiting Voltage Sensitivity of 鈥?.0 dB

Low Drain Current: ICC = 3.2 mA, @ VCC = 4.0 V, Squelch Off

Minimal Drain Current Increase When Squelched

Signal Strength Indicator: 60 dB Dynamic Range

Mixer Operating Frequency Up to 100 MHz

Fewer External Parts Required than Earlier Devices

16

1

D SUFFIX

PLASTIC PACKAGE

CASE 751B

(SO鈥?6)

16

MAXIMUM RATINGS

Rating

Power Supply Voltage

RF Input Voltage (VCC

Detector Input Voltage

Squelch Input Voltage

(VCC

4.0 Vdc)

Symbol

VCC(max)

V16

V8

V12

V14

l14

TJ

Tstg

Value

10

1.0

6.0

鈥?.7 to 10

50

150

鈥?5 to +150

Unit

Vdc

Vrms

Vpp

Vdc

Vpk

mA

掳C

4

16

8

12

14

鈥?/div>

1

q

4.0 Vdc)

DTB SUFFIX

PLASTIC PACKAGE

CASE 948F

(TSSOP鈥?6)

q

ORDERING INFORMATION

Device

MC3371D

MC3371DTB

MC3371P

MC3372D

MC3372DTB

MC3372P

TA = 鈥?0掳 to +70掳C

Operating

Temperature Range

Package

SO鈥?6

TSSOP鈥?6

Plastic DIP

SO鈥?6

TSSOP鈥?6

Plastic DIP

Mute Function

Mute Sink Current

Junction Temperature

Storage Temperature Range

NOTES:

1. Devices should not be operated at these values. The 鈥淩ecommended Operating

Conditions鈥?table provides conditions for actual device operation.

2. ESD data available upon request.

PIN CONNECTIONS

1

2

16 Mixer Input

15 Gnd

14 Mute

MC3371

(Top View)

13 Meter Drive

12 Squelch Input

11 Filter Output

10 Filter Input

9 Recovered Audio

Crystal Osc

1

2

16 Mixer Input

15 Gnd

14 Mute

MC3372

(Top View)

13 Meter Drive

12 Squelch Input

11 Filter Output

10 Filter Input

9 Recovered Audio

Crystal Osc

Mixer Output 3

VCC 4

Limiter Input 5

Decoupling

6

7

Mixer Output 3

VCC 4

Limiter Input 5

Decoupling 6

Limiter Output 7

Quad Input 8

漏

Motorola, Inc. 1996

Quad Coil 8

Rev 1

MOTOROLA ANALOG IC DEVICE DATA

1

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