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MAS9078B3

AM Receiver IC

Micro Analog systems 

DA9078.003

28 January 2004

MAS9078

AM Receiver IC

• High Sensitivity

• Very Low Power Consumption

• Wide Supply Voltage Range

• Power Down Control

• Control for AGC On

• High Selectivity by Crystal Filter

• Fast Startup Feature

DESCRIPTION

The MAS9078 AM-Receiver chip is a highly

sensitive, simple to use AM receiver specially

intended to receive time signals in the frequency

range from 40 kHz to 100 kHz. Only a few external

components are required for time signal receiver.

The circuit has preamplifier, wide range automatic

gain control, demodulator and output comparator

built in. The output signal can be processed directly

by an additional digital circuitry to extract the data

from the received signal. The control for AGC

(automatic gain control) can be used to switch AGC

on or off if necessary. Unlike MAS1016A and

MAS1016B, MAS9078 does not require AGC control

procedure in WWVB and JJY systems.

FEATURES

• Highly Sensitive AM Receiver, 0.4 µVRMS typ.

• Wide Supply Voltage Range from 1.1 V to 3.6 V

• Very Low Power Consumption

• Power Down Control

• Fast Startup

• Only a Few External Components Necessary

• Control for AGC On

• Wide Frequency Range from 40 kHz to 100 kHz

• High Selectivity by Quartz Crystal Filter

• Die and TSSOP-16 Package

APPLICATIONS

• Time Signal Receiver WWVB (USA), JJY (Japan),

DCF77 (Germany) and MSF (UK)

• Receiver for ASK Modulated Data Signals

BLOCK DIAGRAM

QO

QI

AON (=AGC on)

RFI

AGC Amplifier

Demodulator

&

Comparator

OUT

Power Supply/Biasing

VDD VSS PDN

AGC DEC

1 (10)

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