MAS9078(2003) Просмотр технического описания (PDF) - Micro Analog systems

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MAS9078
(Rev.:2003)

AM Receiver IC

Micro Analog systems 

DA9078.002

17 April 2003

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

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