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参数资料
型号： TPA6045A4CRHB
厂商： TEXAS INSTRUMENTS INC
元件分类： 音频／视频放大
英文描述： 2.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC32
封装： QFN-32
文件页数： 26/30页
文件大小： 1147K
代理商： TPA6045A4CRHB
GENERAL DC ELECTRICAL CHARACTERISTICS
SPEAKER AMPLIFIER DC CHARACTERISTICS
SPEAKER AMPLIFIER AC CHARACTERISTICS
TPA6045A4C
www.ti.com.............................................................................................................................................................................................. SLOS614 – OCTOBER 2008
RECOMMENDED OPERATING CONDITIONS (continued)
MIN
MAX
UNIT
VIH
High-level input voltage
SPKR_EN, HP_EN, GAIN0, GAIN1, REG_EN
2
V
VIL
Low-level input voltage
SPKR_EN, HP_EN, GAIN0, GAIN1, REG_EN
0.8
V
TA
Operating free-air temperature
–40
85
°C
TA = 25°C, VDD = SPVDD = HPVDD = CPVDD = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SPKR_EN, HP_EN, GAIN0, GAIN1,
IIH
High-level input current
0.02
1
A
REG_EN = VDD
SPKR_EN, HP_EN, GAIN0, GAIN1,
IIL
Low-level input current
0.02
1
A
REG_EN = 0 V
Supply current, speaker amplifier
IDD(Speaker)
SPKR_EN = 2 V, HP_EN = REG_EN = 0 V
5
12
mA
ONLY enabled
Supply current, headphone
IDD(HP)
HP_EN = 2 V, SPKR_EN = REG_EN = 0 V
7.5
14
mA
amplifier ONLY enabled
Supply current, regulator ONLY
IDD(REG)
REG_EN = 2 V, SPKR_EN = HP_EN = 0 V
0.65
1
mA
enabled
IDD(SD)
Supply current, shutdown mode
SPKR_EN = HP_EN = REG_EN = 0 V
2.5
5
A
TA = 25°C, VDD = SPVDD = 5 V, RL = 4 , Gain = 10 dB (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
| VOO |
Output offset voltage (measured differentially)
Inputs AC-coupled to GND, Gain = 10
0.5
10
mV
dB
PSRR
Power supply rejection ratio
VDD = SPVDD = 4.5 V to 5.5 V
-60
–74
dB
TA = 25°C, VDD = SPVDD = 5 V, RL = 4 , Gain = 10 dB (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
THD+N = 1%, f = 1 kHz, RL = 8
1.3
THD+N = 10%, f = 1 kHz, RL = 8
1.6
PO
Output power
THD+N = 1%, f = 1 kHz, RL = 4
2.1
W
THD+N = 10%, f = 1 kHz, RL = 4
2.6
PO = 1 W, RL = 8 , f = 20 Hz to 20 kHz
0.06%
THD+N
Total harmonic distortion plus noise
PO = 1 W, RL = 4 , f = 20 Hz to 20 kHz
0.1%
f = 1 kHz, CBYPASS = 0.47
F, R
L = 8
kSVR
Supply ripple rejection ratio
–53
dB
VRIPPLE = 200 mVPP
Maximum output at THD+N <1%, f = 1 kHz,
SNR
Signal-to-noise rejection ratio
90
dB
Gain = 10 dB
f = 1 kHz, Po = 1 W, Gain = 10 dB
–110
dB
Crosstalk (Left-Right; Right-Left)
f = 10 kHz, Po = 1 W, Gain = 10 dB
–100
dB
CBYPASS = 0.47
F, f = 20 Hz to 20 kHz,
Vn
Noise output voltage
21
Vrms
Gain = 10 dB, No weighting
ZI
Input Impedance
Gain = 21.6 dB
15
20
k
GAIN0, GAIN1 = 0.8 V
9.4
10
10.6
GAIN0 = 0.8 V; GAIN1 = 2 V
11.4
12
12.6
G
Gain
dB
GAIN0 = 2 V, GAIN1 = 0.8 V
15
15.6
16.2
GAIN0, GAIN1 = 2 V
21
21.6
22.2
Gain Matching
Channel-to Channel
0.01
dB
Copyright 2008, Texas Instruments Incorporated
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Product Folder Link(s): TPA6045A4C
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