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| 型号： | FX009AJ |
| 厂商： | CML MICROSYSTEMS PLC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | AUDIO AMPLIFIER, CDIP24 |
| 封装： | CERAMIC, DIP-24 |
| 文件页数： | 1/3页 |
| 文件大小： | 113K |
| 代理商： | FX009AJ |
1
CML Semiconductor Products
PRODUCT INFORMATION
FX009A
Features/Applications
8 Digitally Controlled Low-Noise
Amplifiers
15 Gain/Attenuation Steps
7 Trimmers, with a
± 3dB Range in
0.43dB Steps
1 'Volume' Trimmer, with a
± 14dB
Range in 2.0dB Steps
Brief Description
This product replaces the need for manual trimming of
audible signals by using the host microprocessor to
digitally control the set-up of all audio levels.
Applications include:
(i) Control, adjustment and set-up of communications
equipment by an Intelligent ATE without manual
intervention – eg. Deviation, Microphone and L/S
Level, Rx Audio Level etc.
(ii) Automatic Dynamic Compensation of drift caused
by variations in temperature, linearity, etc.
(iii)Fully automated servicing and re-alignment.
The FX009A is a low-power, single 5-volt CMOS
device available in both 24-pin DIL and SMD package
versions.
The FX009A Digitally Adjustable Amplifier Array is
intended to replace trimmer potentiometers and volume
controls in Cellular, PMR, Telephony and
Communications applications where d.c., voice or data
signals need adjustment.
The FX009A is a low-noise single-chip LSI consisting
eight digitally controlled amplifier stages, each with 15
distinct gain/attenuation steps. Control of each
individual amplifier is by an 8-bit serial data stream.
Seven of the amplifier stages offer a +/-3dB range in
steps of 0.43dB, whilst the remaining amplifier offers a
+/-14dB range in steps of 2dB, and is intended for
volume control applications. Each amplifier includes a
16th 'Mute' state which sets the output to bias (V
DD/2)
and powersaves the entire section. Minimum current
drain may be achieved by muting all eight sections.
Publication D/009A/3 July 1994
Low-Noise Digitally Controlled
Amplifier Array
8-Bit Serial Data Control
Output Mute/Powersave Function
Audio and Data Gain Control
Applications
Cellular, PMR, PABX Applications
FX009A
Fig.1 Functional Block Diagram
8 - BIT
SERIAL DATA INPUT
AND
LINE DECODERS
12
345
67
8
SERIAL DATA INPUT
LOAD/LATCH
1
2
3
4
8
7
6
16-LINE STEP CONTROLS TO AMPLIFIERS 1 to 8
5
43
2
1
5
6
7
Ch1
Ch2
Ch3
Ch4
Ch5
Ch6
Ch7
Ch8
V
DD
V
BIAS
CONTROLLED AUDIO OUTPUT LINES
8 - VOLUME
SERIAL CLOCK INPUT
LOAD/LATCH
V
SS
*
OUTPUT MUTE - POWERSAVE
*
V
BIAS
V
BIAS
V
BIAS
V
BIAS
V
BIAS
V
BIAS
V
BIAS
V
BIAS
16
相关PDF资料 |
PDF描述 |
|---|---|
| FX009ALS | SPECIALTY TELECOM CIRCUIT, PQCC24 |
| FX009ALG | AUDIO AMPLIFIER, PQFP24 |
| FX009J | SPECIALTY TELECOM CIRCUIT, CDIP24 |
| FX009LS | SPECIALTY TELECOM CIRCUIT, PQCC24 |
| FX009LG | AUDIO AMPLIFIER, PQFP24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FX009ALG | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Digitally Controlled Gain Amplifier |
| FX009ALS | 制造商:CMLMICRO 制造商全称:CML Microcircuits 功能描述:Low-Noise Digitally Controlled Amplifier Array |
| FX009J | 制造商:CMLMICRO 制造商全称:CML Microcircuits 功能描述:Digitally Controlled Amplifier Array |
| FX009LG | 制造商:CMLMICRO 制造商全称:CML Microcircuits 功能描述:Digitally Controlled Amplifier Array |
| FX009LS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
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