HA1156W Datasheet PDF – FM Stereo Demodulator – Hitachi

Part Number : HA1156W

Function : FM Stereo Demodulator

Package : DIP 14 Pin

Manufacturers : Hitachi

Image :

HA1156W image


1. Low External Part – No Coils
2. Only One Adjustment of Semifixed Volume for Oscillation Frequency
3. High Operating Stability Against Environmental Condition Change
4. Total System Including Stereo Demodulator, Automatic Stereo-Moanural Switching Circuit, and Stereo Indicator Lamp Driver

Function Block Diagram

Datasheet Block Diagram

HA1156W Circuit

Absolute maximum ratings ( Ta = 25°C )

1. Supply Voltage : Vcc = 16 V
2. Lamp Current : IL = 75 mA
3. Power Dissipation : Pt = 400 mW
4. Operating Temperature : Topr = -20 to +85°C
5. Storage Temperatue : Tsg = -55 ~ +125°C

Standard Circuit


HA1156W Datasheet PDF Download

HA1156W pdf


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RF2690 Datasheet PDF – W-CDMA Receive AGC and Demodulator

Part Number : RF2690

Function : W-CDMA Receive AGC and Demodulator

Package : LCC, 20-Pin, 4×4 Type

Manufacturers : RF Micro Devices

Images :

RF2690 datasheet

Description :

The RF2690 is an integrated complete IF AGC amplifier and quadrature demodulator designed for the receive section of W-CDMA applications. It is designed to amplify received IF signals, while providing 70dB of gain control range, a total of 90dB gain, and demodulation to base band I and Q signals.This circuit is designed as part of RFMD’s single mode W-CDMA chipset, which includes the RF9678 as modulator and IF AGC and the RF2638 as upconvertor. The IC is manufactured on an advanced 25GHz FTSilicon Bi-CMOS process, and is packaged in a 20-pin, 4mmx4mm, leadless chip carrier.


1. Digitally Controlled Power Down Mode
2. 2.7V to 3.3V Operation
3. Digital LO Quadrature Divide-by-4
4. IF AGC Amp with 70dB Gain Control
5. 80dB Maximum Voltage Gain


Typical Applications

1. W-CDMA Systems

Other data sheets within the file : RF2690PCBA

RF2690 Datasheet PDF Download

RF2690 pdf