TA2021-100 ETC1 [List of Unclassifed Manufacturers], TA2021-100 Datasheet
TA2021-100
Related parts for TA2021-100
TA2021-100 Summary of contents
Page 1
Absolute Maximum Ratings SYMBOL Vs Supply Voltage (Vspos & Vsneg) V5 Positive 5 V Bias Supply VGG Internally generated voltage ...
Page 2
Minimum and maximum limits are guaranteed but may not be 100% tested. Performance Characteristics – Single Ended Unless otherwise specified, ...
Page 3
Serial Bus Timing Unless otherwise specified, _____________ SYMBOL PARAMETER t SCL (Clock) Period CL t Data In Set-up Time to ...
Page 4
Pin Description Pin Function 1,13 VB2,VB1 Bootstrapped voltages supply drive to gates of high-side FET’s 2 VGG Regulated output of ...
Page 5
PSMUTE OVRLD/SCL HMUTE/SDA MIS/ADDR AUXOUT1 AUXOUT2 DCVOL FDBKN1 GNDKELVIN1 FDBKN2 GNDKELVIN2 32-pin SSIP Package (Top View) VB2 1 VGG 2 ...
Page 6
... Test/Application Circuit TA2021-100 C IN INP1 SLEEP 19 MUTE 16 PSMUTE 17 OVRLD/SCL 18 HMUTE/SDA C IN INP2 +5V MIS/ADDR 19 27 V2BG DCVOL 28 AGND 24 Note - Heavy Lines Indicate High-Current Paths 25 AUXOUT1 26 AUXOUT2 Positive Supply Star ...
Page 7
... TA2021-100 in Mode 1. Mode 2 operation is described in the next section. TA2021-100 Basic Amplifier Operation The audio input signal is fed to the processor internal to the TA2021-100, where a modulation pattern is generated. This pattern is spread spectrum and varies between approximately 200kHz and 1.5MHz. ...
Page 8
... When the voltage drop becomes greater than V try to limit the current by internally decreasing the gain of the input stage of the TA2021-100. If the voltage drop continues to increase to greater than V 100 will shut off the output stages of its amplifiers and supply a logic level high on HMUTE/SDA ...
Page 9
... Input Limit To “soften” the clipping characteristics of the TA2021-100 it will limit the audio signal to a pre- determined, programmable input-limit level according to the voltage on the MIS/ADDR pin as specified in the previous table. This limit is a percentage of the maximum possible output level. ...
Page 10
... Mode 2 operation, where control/status of the amplifier is by registers accessed through a digital serial control bus. This serial bus is compatible with Philips’ I The TA2021-100 operates as a slave device on the bus. The OVRLD/SCL line is an input (no clock is generated by the TA2021-100) and the HMUTE/SDA line is a bi-directional serial data path. ...
Page 11
... The registers in the TA2021-100 are selected by the eight-bit index register. At power-up the Index register is set to zero. The seven least-significant bits of the Index register define the register address space in the TA2021-100. When written to the MSB of the Index register the Index register value is auto-incremented (by 1) after each byte transfer is complete written to the MSB of the Index register the Index register value is not changed ...
Page 12
... This bit is read- only. Writing to it has no effect. F1: Over-temperature fault. When 0, indicates normal operation. When 1, indicates that the die temperature of the TA2021-100 has exceeded TBD. This bit is read- only. Writing to it has no effect. F0: Voltage fault. When 0, indicates normal operation. When 1, indicates an over-/ under- voltage condition has shut down the TA2021-100 ...
Page 13
... CTL7: Mute. Writing this bit (power-up initialization value) tells the TA2021-100 to operate normally. Writing this bit tells the TA2021-100 to go into mute mode, where the output stages of both amplifiers are shut down but all other circuitry is still operational (including the volume control and AUXOUT audio outputs ...
Page 14
... CFG4: Volume control mode. Writing this bit (power-up initialization value) tells the TA2021-100 to use the voltage on the DCVOL pin to directly control the volume of both channels. Writing this bit tells the TA2021-100 to use the values in the VOLUME1 and VOLUME2 registers to set the output volumes of the respective channels ...
Page 15
VOLUME1 Register V1R7 V1R6 MSB V1R7-V1R0: Volume 1 (Channel 1). These bits set the ...
Page 16
... Bridged Operation Note that the two channels of a TA2021-100 amplifier can be used to provide a single, bridged amplifier of almost four times the output power of one of the single-ended amplifier channels. To configure a bridged amplifier, the input to one TA2021-100 channel must be the inverted signal of the input to the other channel. ...
Page 17
... TA0102A and TA0103A longer necessary. It should be noted that the DC voltage on the output of a TA2021-100 amplifier with no load in mute mode is approximately 2.5V. This offset does not need to be nulled. The output impedance of the amplifier in mute mode is approximately 10 KOhms ...
Page 18
... To Be Supplied Circuit Board Layout Considerable care needs to be taken in the layout of the circuit board for a TA2021-100 amplifier. The high currents flowing through PCB traces and the inductive effects due to the switching frequencies involved can cause large overshoot and undershoot voltages if care is not taken ...
Page 19
... Efficiency Of A TA2021-100 Amplifier The efficiency amplifier is OUT IN The power dissipation of a TA2021-100 amplifier is primarily determined by the on resistance the output transistors used, and the switching losses of these transistors TA2021-100 amplifier, P (per channel) is approximated by ...
Page 20
the above calculation the R order to account for some temperature rise of the MOSFETs. (R factor of 1.7 ...
Page 21
Package Information 32-pin SSIP 22 ...
Page 22
ADVANCED DEVELOPMENT – This is a product in development. Tripath Technology Inc. reserves the right to make any changes without ...
Page 23
... WWW.ALLDATASHEET.COM Copyright © Each Manufacturing Company. All Datasheets cannot be modified without permission. This datasheet has been download from : www.AllDataSheet.com 100% Free DataSheet Search Site. Free Download. No Register. Fast Search System. www.AllDataSheet.com ...