DEMOTS4956J STMicroelectronics, DEMOTS4956J Datasheet - Page 2

BOARD DEMO TS4956EIJT/EIKJT

DEMOTS4956J

Manufacturer Part Number
DEMOTS4956J
Description
BOARD DEMO TS4956EIJT/EIKJT
Manufacturer
STMicroelectronics
Datasheets

Specifications of DEMOTS4956J

Amplifier Type
Class AB
Output Type
1-Channel (Mono) with Mono and Stereo Headphones
Max Output Power X Channels @ Load
1W x 1 @ 8 Ohm; 43mW x 2 @ 32 Ohm
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
TS4956
Description/function
Audio Amplifiers
Operating Supply Voltage
2.7 V to 5.5 V
Product
Audio Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
TS4956
Other names
497-6381
DEMOTS4956J

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DEMOTS4956J
Manufacturer:
ST
0
Contents
Contents
1
2
3
4
2/55
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
Typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
I
2.1.1
2.1.2
2.1.3
Output configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.1.1
4.1.2
4.1.3
4.1.4
Power limitation in the phantom ground configuration . . . . . . . . . . . . . . . 39
Power dissipation and efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.3.1
4.3.2
4.3.3
Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.4.1
4.4.2
Single-ended input configuration in modes 1, 3 and 5 . . . . . . . . . . . . . . . 45
Decoupling of the circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
PSRR measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
4.8.1
4.8.2
Pop and click performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
2
C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
I²C operation description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gain and mode setting operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Acknowledge bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Single-ended output configuration (modes 5 and 6) . . . . . . . . . . . . . . . 38
Phantom ground output configuration (modes 3 and 4) . . . . . . . . . . . . . 38
BTL output configuration (modes 1, 2, 7) . . . . . . . . . . . . . . . . . . . . . . . 39
Single-ended output configuration (modes 5 and 6) . . . . . . . . . . . . . . . 40
Phantom ground output configuration (modes 3, 4): . . . . . . . . . . . . . . . 41
BTL output configuration (modes 1, 2, 7) . . . . . . . . . . . . . . . . . . . . . . . 42
Input capacitor C
Output capacitor C
What is PSRR? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
How is PSRR measured? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
TS4956

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