|
|
PDF TD9772A Data sheet ( Hoja de datos )
| Número de pieza | TD9772A | |
| Descripción | 4 Inputs Selectable Stereo Class-AB Audio Amplifier | |
| Fabricantes | Techcode | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TD9772A (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
Techcode®
4 Inputs Selectable Stereo Class-AB Audio Amplifier
DATASHEET
TD9772A
General Description
Features
TD9772A is an audio amplifier of Class-AB type. It
offers both excellent sound quality of
THD+N<0.03% , and input/output flexibilities.
TD9772A features three different output
configurations and four different input channels,
both selectable by external pins. Outputs can be
BTL,SE, or straight-through. There are four input
channels making it convenient for the multigadgets
modern age. On-chip DC volume control features
64 non-linear digital steps from –84dB to 24dB for
better responsive to human ears While output
power can be as high as 2.6W, the maximum
output voltage can be adjusted by an external bias
so that output power can be limited. Output pin
short protection and over temperature shutdown
modes are to ensure good system integrity.
Internal soft switching designs are to minimize click
and pop noises during power up/down, mute, and
channel switching instances.
◆ Vin: 2.5V to 5.5V
◆ Max Output Power (4-ohm speaker): 2.6W
- With 64 Steps Volume Control
- Adjustable max Output Power Limits
◆ 4 selectable Inputs
◆ Supports 3 Output configurations: BTL, SE,
and Straight through.
- Maximum BTL gain: 24dB
- Maximum SE gain: 18dB
◆ Quiescent Current: <10mA
◆ Under Voltage Lockout at Vin <2V
◆ Short Circuit Protection
◆ Over Temperature Protection
◆ No Click and Pop noise: <10mW for BTL
Applications
Ordering Information
• Portable Music Center
• Notebook PC
• LCD Monitors
Order Number Package Type
TSSOP-24L
Remark
1 page  
Techcode®
4 Inputs Selectable Stereo Class-AB Audio Amplifier
DATASHEET
TD9772A
Pin Descriptions
SSOP-24 Pin
No.
1，24
Pin Name
LOUT+，ROUT+
2，23
3，22
PVDD
LOUT-，ROUT-
4，21
LPGND，RPGND
5，6
7，8
LLin1，LLin2
LLin3，LLin4
17，18
19，20
RLin1，RLin2
RLin3，RLin4
Description and Function
Positive audio output terminals
Supply voltage terminal for output power stage
Negative audio output terminals
Ground terminal for output power stage
Left channel line inputs
Right channel line inputs
9
10，11
AVDD
Line1/Line2
Line3/Line4
Supply voltage terminal for internal circuits
Input MUX control (see Table 1 for selection logic)
12
VOLUME
Input voltage for setting volume gain (See Table 4 and graph)
13
VLM/MUTE
Input voltage for setting the maximum output voltage swing
(See Table 3)
◆ 0V to VMute, Output driver is at tri-stated (Mute).
◆ Vlml to Vlmh, Output voltage is limited, see table 3.
◆ >Vlmh, Output voltage is at AVDD.
14
BYPASS
Connecting to a bypass cap of typical value 2.2uF.
15
AGND
Analog power supply ground
16 BTL/STRAIGHT/SE Output mode selection (See Table 2 for selection logic)
◆ >VIL, output at BTL mode
◆ <VIH, output at SE mode
◆ Floating, output signal is the same as input signal
0: Logic input 0, VIL
1: Logic input 1, VIH N
C: No Connect
5 Page 
Techcode®
4 Inputs Selectable Stereo Class-AB Audio Amplifier
Electrical Characteristics(Cont.)
DATASHEET
TD9772A
Operating Characteristics，BTL mode. VDD=5V，TA=25˚C，RL=4Ω（unless otherwise specified）
Parameter
Oscillator Frequency
Efficiency
Signal Noise Ratio
Input Logic Voltage
Volume Input Range
Mute Voltage
Output Voltage Limit
Symbol Test Conditions
Min Typ
fOSC
η
SNR
207
RL=4Ω ，PO=2.6W，f=1KHz，BTL
RL=4Ω ，PO=2.6W，f=1KHz，BTL
250
71
97
Max Units
313 KHz
%
dB
VIL 0.8 V
VIH 2.0 V
Vol
Vmute
VLML
Output Driver at tri-stated
0
0.5 0.6
0.7 0.8
AVDD-
1.0
0.7
0.9
V
V
V
VLMH
1.8 2.0 V
October, 20, 2010.
Techcode Semiconductor Limited
11
www.techcodesemi.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TD9772A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TD9772A | 4 Inputs Selectable Stereo Class-AB Audio Amplifier | Techcode |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |