MC3372D View Datasheet(PDF) - LANSDALE Semiconductor Inc.

Part Name

Description

View to exact match

MC3372D

Low Powe Narrowband FM IF

LANSDALE Semiconductor Inc. 

ML3371, ML3372

LANSDALE Semiconductor, Inc.

ML3371 PIN FUNCTION DESCRIPTION (continued)

OPERATING CONDITIONS VCC = 4.0 Vdc, RFIn = 100 µV, fmod = 1.0 kHz, fdev = 3.0 kHz. ML3371 at f RF = 10.7 MHz (see Figure 11).

Internal Equivalent

Pin

Symbol

Circuit

Description

Waveform

13

RSSI

VCC

RSSI Output. Referred to as the

Received Signal Strength Indicator or

RSSI. The chip sources up to 60 µA

1.8 k

over the linear 60 dB range. This pin

may be used many ways, such as:

AGC, meter drive and carrier triggered

Bias

13

squelch circuit.

RSSIOut

14

MUTE

14 Mute or

SqOut

Mute Output. See discussion in

application text.

15

Gnd

40 k

Gnd 15

16

MIXIn

VCC

16

MixerIn

3.3 k

10 k

*Other pins are the same as pins in MC3371.

Ground. The ground area should be

continuous and unbroken. In a two–

sided layout, the component side has

the ground plane. In a one–sided

layout, the ground plane fills around

the traces on the circuit side of the

board and is not interrupted.

Mixer Input –

Series Input Impedance:

@ 10 MHz: 309 – j33 Ω

@ 45 MHz: 200 – j13 Ω

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