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參數資料
型號: TPS65950ZXNR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝: 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數: 133/167頁
文件大小: 2566K
代理商: TPS65950ZXNR
TPS65950
Integrated Power Management/Audio Codec
SWCS032 – OCTOBER 2008
www.ti.com
Table 6-2. 8-
Stereo Hands-Free Output Characteristics (continued)
Parameter
Test Conditions
Min(1)
Typ(2)
Max(3)
Unit
Gain range(4)
Audio path
–75.6
34.4
dB
Voice path
–49.6
34.4
Absolute gain error
–1
1
dB
Maximum output power (load impedance = 8
)
VBAT > 3.6 V
400
mW
VBAT > 4.0 V
700
Peak-to-peak differential output voltage
VBAT > 3.6 V (0 dBFs)
5.0
VPP
VBAT > 4.0 V (2 dBFs)
6.25
At 0 dBFs
–60
–40
dBFs
Total harmonic distortion (load impedance = 8
, gain setting = 0
dB)
At –10 dBFs
–60
(VBAT > 3.6 V)
At –20 dBFs
–45
At –60 dBFs
–20
Total harmonic distortion (load impedance = 8
, (VBAT > 4.2 V)
2 dBFs
–60
–40
dB
Idle channel noise (20 Hz to 20 kHz)
0 dB gain
–88
dBFs
PSRR (input signal 1 kHz sine, 300 mVPP GSM ripple at 217 Hz
From VBAT
75
80
dB
with 10-
s rise/fall times, at 12.5% duty cycle)
Power on load = 400 mW
70%
Efficiency
Load impedance = 8
Power dissipation
Power on load = 400 mW
175
mW
Load impedance = 8
Idle current consumption on VBAT
Without input signal
6
mA
Clock frequency for the ramp generation
384
426.6
kHz
IDDQ current
At 25
°C
0.6
A
(4)
Audio digital filter = –62 to 0 dB (1-dB steps) and 0 to 12 dB (6-dB steps)
Voice digital filter = –36 to 12 dB (1-dB steps)
ARXPGA (volume control) = –24 to 12 dB (2-dB steps)
Output driver = 10.4 dB
6.1.2.1.1 Short-Circuit Protection
There is short-circuit protection for hands-free amplifiers to limit power dissipation to 1.2 W. The
short-circuit protection can be disabled by register. If a short circuit is detected, the short-circuit detection
block switches off the hands-free speaker output stages. A software restart is required to restart the
class-D amplifier.
Audio/Voice Module
68
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