參數(shù)資料
型號(hào): TLV320AIC3120IRHBT
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: AUDIO AMPLIFIER, PQCC32
封裝: 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁(yè)數(shù): 129/150頁(yè)
文件大小: 1507K
代理商: TLV320AIC3120IRHBT
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SLAS653 – FEBRUARY 2010
www.ti.com
Electrical Characteristics (continued)
At 25°C, AVDD = HPVDD = IOVDD = 3.3 V, SPKVDD = 3.6V, DVDD = 1.8 V, fS (audio) = 48 kHz, CODEC_CLKIN = 256 ×
fS, PLL = Off, VOL/MICDET pin disabled (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC OUTPUT to CLASS-D SPEAKER OUTPUT; Load = 8
(Differential), 50 pF
SPKVDD 3.6 V, BTL measurement, DAC input = 0
dBFS, CM = 1.8 V, class-D gain = 6 dB, THD
≤ –16.5
2.2
dB
Output voltage
Vrms
SPKVDD = 3.6 V, BTL measurement, DAC input = –2
dBFS, CM = 1.8 V, class-D gain = 6 dB, THD
≤ –20
2.1
dB
SPKVDD = 3.6 V, BTL measurement, DAC input =
Output, common-mode
1.8
V
mute, class-D gain = 6 dB
SPKVDD = 3.6 V, BTL measurement, class-D gain =
6 dB, measured as idle-channel noise, A-weighted
SNR
Signal-to-noise ratio
87
dB
(with respect to full-scale output value of 2.2 Vrms)(1)
(2)
SPKVDD = 3.6 V, BTL measurement, DAC input = –6
THD
Total harmonic distortion
–67
dB
dBFS, CM = 1.8 V, class-D gain = 6 dB
Total harmonic distortion +
SPKVDD = 3.6 V, BTL measurement, DAC input = –6
THD+N
–66
dB
noise
dBFS, CM = 1.8 V, class-D gain = 6 dB
SPKVDD = 3.6 V, BTL measurement, ripple on
PSRR
Power-supply rejection ratio(3)
–44
dB
SPKVDD = 200 mVp-p at 1 kHz
Mute attenuation
110
dB
SPKVDD = 3.6 V, BTL measurement, CM = 1.8 V,
0.7
class-D gain = 18 dB, THD = 10%
SPKVDD = 4.3 V, BTL measurement, CM = 1.8 V,
PO
Maximum output power
1
W
class-D gain = 18 dB, THD = 10%
SPKVDD = 5.5 V, BTL measurement, CM = 1.8 V,
1.6
class-D gain = 18 dB, THD = 10%
Output-stage leakage current
SPKVDD = 4.3 V, device is powered down
80
nA
for direct battery connection
(power-up-reset condition)
ADC and DAC POWER CONSUMPTION
For ADC and DAC power consumption based per selected processing block, see Section 5.4
DIGITAL INPUT/OUTPUT
Logic
CMOS
family
0.7 ×
IIH = 5 mA, IOVDD ≥ 1.6 V
IOVDD
VIH
V
IIH = 5 mA, IOVDD < 1.6 V
IOVDD
0.3 ×
IIL = 5 mA, IOVDD ≥ 1.6 V
–0.3
IOVDD
VIL
V
Logic level
IIL = 5 mA, IOVDD < 1.6 V
0
0.8 ×
VOH
IOH = 2 TTL loads
V
IOVDD
0.1 ×
VOL
IOL = 2 TTL loads
V
IOVDD
Capacitive load
10
pF
(1)
Ratio of output level with 1-kHz full-scale sine-wave input, to the output level with the inputs short-circuited, measured A-weighted over a
20-Hz to 20-kHz bandwidth using an audio analyzer.
(2)
All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may
result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter
removes out-of-band noise, which, although not audible, may affect dynamic specification values.
(3)
DAC to speaker-out PSRR is a differential measurement calculated as PSRR = 20 × log(
ΔVSPK(P + M) / ΔVSPKVDD).
8
ELECTRICAL SPECIFICATIONS
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC3120
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