MX019
MX019 is Quad Digital Control Amplifier manufactured by CML.
FEATURES
4 Digitally Controlled Amplifiers 15 Gain/Attenuation Steps 3 Amplifiers ± 3d B Range in 0.43d B Steps 1 'Volume' Amplifier ±14d B Range in 2d B Steps 8-Bit Serial Data Control Output Mute Function
SERIAL CLOCK INPUT SERIAL DATA INPUT
2 1
Quad Digital Control Amplifier
APPLICATIONS
Gain Control Applications Audio Data Telemunications, Radio, & Industrial Applications
8-BIT SERIAL DATA INPUT
LOAD/LATCH
LOAD/LATCH
VOLUME
Ch1
Ch4
VDD VBIAS
2 3
VSS CHIP ADDRESS
Ch2
Ch3
CONTROLLED AUDIO OUTPUT LINES
The MX019 Digitally Adjustable Amplifier Array replaces trimmer potentiometers and volume controls in Cellular, LMR, Telephony and munication applications where voice or data signals need adjustment. The MX019 is a single-chip LSI consisting of four digitally controlled amplifier stages, each with 15 distinct gain/attenuation steps. Control of each individual amplifier is by an 8-bit serial data stream. Three of the amplifier stages offer a 3d B range in steps of 0.43d B, while the remaining amplifier offers a 14d B range in steps of 2d B, and is suggested for volume control applications. Each amplifier includes a 16th 'Off' state which, when applied, mutes the output audio from that channel. This array uses a Chip Select input to select one of two MX019s in a system. The MX019 uses the host microprocessor to digitally control the set-up of all audio levels during development, production/calibration, and operation. Such applications include: 1. Control, adjustment, and set-up of munications equipment by an Intelligent ATE without manual intervention
- eg. Deviation, Microphone and L/S Levels, RX Audio Level etc. 2. Automatic Dynamic pensation of drift caused by variations in temperature, linearity, etc. 3. Fully automated servicing and re-alignment. The MX019 is a low-power, single 5-volt CMOS device available in 24-pin TSSOP (MX019TN), 16-pin SOIC (MX019DW), 16-pin CDIP (MX019J) and 16-pin PDIP (MX019P) package...
