参数资料
型号: TPA0242PWPG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 音频控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24
封装: GREEN, PLASTIC, HTSSOP-24
文件页数: 23/35页
文件大小: 806K
代理商: TPA0242PWPG4
www.ti.com
ABSOLUTE MAXIMUM RATINGS
TPA0242
SLOS287C – NOVEMBER 1999 – REVISED SEPTEMBER 2004
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
BYPASS
11
Tap to voltage divider for internal mid-supply bias generator
If a 47-nF capacitor is attached, the TPA0242 generates an internal clock. An external clock can override the
CLK
17
I
internal clock input to this terminal.
1, 12
GND
Ground connection for circuitry. Connected to thermal pad
13, 24
LHPIN
6
I
Left channel headphone input, selected when SE/BTL is held high
LIN
10
I
Common left input for fully differential input. AC ground for single-ended inputs
LLINEIN
5
I
Left channel line negative input, selected when SE/BTL is held low
LOUT+
4
O
Left channel positive output in BTL mode and positive output in SE mode
LOUT-
9
O
Left channel negative output in BTL mode and high-impedance in SE mode
HP/LINE is the input MUX control input. When the HP/LINE terminal is held high, the headphone inputs
HP/LINE
2
I
(LHPIN or RHPIN [6, 20]) are active. When the HP/LINE terminal is held low, the line BTL inputs (LLINEIN
or RLINEIN [5, 23]) are active.
The input for PC-beep mode. PC-BEEP is enabled when a > 1.5-VPP (peak-to-peak) square wave is input to
PC-BEEP
14
I
PC-BEEP.
PVDD
7, 18
I
Power supply for output stage
RHPIN
20
I
Right channel headphone input, selected when SE/BTL is held high
RIN
8
I
Common right input for fully differential input. AC ground for single-ended inputs
RLINEIN
23
I
Right channel line input, selected when SE/BTL is held low
ROUT+
21
O
Right channel positive output in BTL mode and positive output in SE mode
ROUT-
16
O
Right channel negative output in BTL mode and high-impedance in SE mode
SE/BTL
15
I
Hold SE/BTL low for BTL mode and hold high for SE mode.
SHUTDOWN
22
I
When held low, this terminal places the entire device, except PC-BEEP detect circuitry, in shutdown mode.
VDD
19
I
Analog VDD input supply. This terminal needs to be isolated from PVDD to achieve highest performance.
VOLUME detects the dc level at the terminal and sets the gain for 31 discrete steps covering a range of 20
VOLUME
3
I
dB to -40 dB for dc levels of 0.15 V to 3.54. When the dc level is over 3.54 V, the device is muted.
Thermal Pad
Connect to ground. Must be soldered down in all applications to properly secure device on PC board.
over operating free-air temperature range (unless otherwise noted) (1)
UNIT
Supply voltage, VDD
6 V
Input voltage, VI
-0.3 V to VDD 0.3 V
Continuous total power dissipation
Internally Limited (see Dissipation Rating Table)
Operating free-air temperature range, TA
-40
°C to 85°C
Operating junction temperature range, TJ
-40
°C to 150°C
Storage temperature range, Tstg
-65
°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
(1)
Stresses beyond those listed under "absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
3
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