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TPA6138A2 데이터시트(PDF) 5 Page - Texas Instruments

부품명 TPA6138A2
상세설명  TPA6138A2 DirectPath??Headphone Driver With Adjustable Gain
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TPA6138A2 데이터시트(HTML) 5 Page - Texas Instruments

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TPA6138A2
www.ti.com
SLOS704B – JANUARY 2011 – REVISED AUGUST 2015
7.5 Electrical Characteristics
VDD = 3.3 V, RDL = 32 Ω, Rfb = 30 kΩ, RIN = 15 kΩ, TA = 25°C, Charge pump: CP = 1 µF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
|VOS|
Output offset voltage
VDD = 3.3 V
0.5
1
mV
PSRR
Power-supply rejection ratio
80
dB
VOH
High-level output voltage
VDD = 3.3 V
3.1
V
VOL
Low-level output voltage
VDD = 3.3 V
–3.05
V
VUVP_EX
External UVP detect voltage
1.25
V
VUVP_EX_HYSTERESIS
External UVP detect hysteresis current
5
µA
fCP
Charge-pump switching frequency
200
300
400
kHz
|IIH|
High-level input current, Mute
VDD = 3.3 V, VIH = VDD
1
µA
|IIL|
Low-level input current, Mute
VDD = 3.3 V, VIL = 0 V
1
µA
VDD = 3.3 V, no load, Mute = VDD, no load
5
14
25
IDD
Supply current
mA
VDD = 3.3 V, no load, Mute = GND,
14
disabled
7.6 Operating Characteristics
VDD = 3.3 V, RDL = 32 Ω, Rfb = 30 kΩ, RIN = 15 kΩ, TA = 25°C, Charge pump: CP = 1 µF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PO
Output power, outputs in phase
THD+N = 1%, VDD = 3.3 V, f = 1 kHz, RL = 32 Ω
40
mW
THD+N
Total harmonic distortion plus noise
VDD = 3.3V, f = 1kHz, RLD = 32Ω, Po = 10mW
0.01%
SNR
Signal-to-noise ratio(1)
A-weighted
90
96
dB
DNR
Dynamic range(2)
A-weighted
90
100
dB
VN
Noise voltage
A-weighted
13
μV
ZO
Output Impedance when muted
Mute = GND
110
m
Ω
Input-to-output attenuation when
Mute = GND
80
dB
muted
Crosstalk—L to R, R to L
Po = 20 mW
–75
dB
ILIMIT
Current limit
PVDD = 3.3 V
50
mA
(1)
SNR is calculated relative to 25-mW output.
(2)
DNR is calculated relative to output at 1% THD+N.
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