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Details, datasheet, quote on part number:MX029J
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| Part: | MX029J |
| Category: | Communication => Telephony => Codecs/Voice Codecs => PCM Line Card->Signaling & Control |
| Description: | Dual Digital Control Amplifier |
| Company: | Consumer Microcircuits Limited |
| Datasheet: | Download MX029J datasheet File size : 176 kB |
| Request For quote: | Find where to buy MX029J
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Datasheet text preview:
DATA BULLETIN
MX029
Features
Dual Digitally Controlled Amplifier PRELIMINARY INFORMATION Applications
Cellular and LMR Radios PABX's, Electronic Mail, TAM's Automatic Test Equipment Remote Gain Adjustments Digitally Set Audio Control Levels
2 Digitally Controlled Amplifiers ±48dB Gain/Attenuation in 2dB Steps + Mute Individual Control with a 14-Bit Serial Word Separate Fixed Gain Buffer Amplifier
SERIAL CLOCK DATA INPUT LOAD/LATCH
SERIAL INTERFACE
VDD
STAGE 1 CONTROL REGISTER
VSS BIAS VSS BIAS
CH1, INPUT 1 CH1, INPUT 2 CH1, INPUT 3
TO STAGE 1 CONTROL REGISTER
CH1, OUTPUT 1
G
CH1, OUTPUT 2
VSS
BIAS
STAGE 1 CONTROL REGISTER
VSS CH2, INPUT 1
BIAS
G
CH2, INPUT 2
CH2, OUTPUT 1
UNIVERSAL AMP IN
UNIVERSAL AMP OUT
BIAS
The MX029 Digitally Controlled Amplifier Array replaces audio level controls in radio and wireline communications applications. It is a single-chip LSI circuit comprised of two discrete, digitally controlled gain sections. Each section has 48 distinct gain steps (+/-48dB of range in 2dB steps) plus MUTE. As shown in Figure 1, both gain stages have switchable inputs. This switching allows for selection of three different input signals on one channel and two on the other channel. One of the channels also has output switching. In addition to two digitally controlled gain stages, there is a general purpose inverting amplifier. The gain of this amplifier is controlled externally via negative feedback. Control of each gain control section is accomplished through the serial interface. All switching is accomplished using controlled rise and fall times, thereby assuring no transients (clicks or pops). The MX029 requires a single 5-volt supply and is available in the following packages: 16-pin SOIC (MX029DW), 16-pin CDIP (MX029J), and 24-pin TSSOP (MX029TN).
1998 MX-COM, INC. w w w .mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054 Doc. # 20480096.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA.
All trademarks and service marks are held by their respective companies.
Dual Digitally Controlled Amplifier
2
MX029
CONTENTS
Section Page
1. Block Diagram ...... .. 3 2. Signal List ...... 4 3. External Components ........... 5 4. Application..... 5
4.1 Recommendations ... ..... 5
5. Control Data and Timing....... 6 6. Performance Specification ............ 8
6.1 Electrical Performance ........... ...... 8
6.1.1 Absolute Maximum Ratings ....... ......... 8 6.1.2 Operating Limits.......... 8 6.1.3 Operating Characteristics ...... .... 9
6.2 Serial Interface Timing .......... ..... 10 6.3 Packaging........... 11
MX-COM, Inc. reserves the right to change specifications at any time and without notice.
1998 MX-COM, INC.
w w w .mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054
Doc. # 20480096.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA.
All trademarks and service marks are held by their respective companies.
Dual Digitally Controlled Amplifier
3
MX029
1. Block Diagram
SERIAL CLOCK DATA INPUT LOAD/LATCH
SERIAL INTERFACE
VDD
STAGE 1 CONTROL REGISTER
VSS BIAS VSS BIAS
CH1, INPUT 1 CH1, INPUT 2 CH1, INPUT 3
TO STAGE 1 CONTROL REGISTER
CH1, OUTPUT 1
G
CH1, OUTPUT 2
VSS
BIAS
STAGE 1 CONTROL REGISTER
VSS CH2, INPUT 1
BIAS
G
CH2, INPUT 2
CH2, OUTPUT 1
UNIVERSAL AMP IN
UNIVERSAL AMP OUT
BIAS
Figure 1: Device Block Diagram
1998 MX-COM, INC.
w w w .mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054
Doc. # 20480096.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA.
All trademarks and service marks are held by their respective companies.
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