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参数资料
型号： TLV320AIC3111IRHBT
厂商： TEXAS INSTRUMENTS INC
元件分类： 音频／视频放大
英文描述： AUDIO AMPLIFIER, PQCC32
封装： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件页数： 124/156页
文件大小： 1701K
代理商： TLV320AIC3111IRHBT
TLV320AIC3111
www.ti.com
SLAS644B – JULY 2009 – REVISED OCTOBER 2009
Electrical Characteristics (continued)
At 25°C; AVDD, HPVDD, IOVDD = 3.3V; SPLVDD, SPRVDD = 3.6 V; 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
AUDIO ADC
Microphone Input to ADC, 984-Hz Sine-Wave Input, fS = 48 kHz, AGC = OFF
MIC with R1 = 20 k
(page 1 / register 48 and page 1 /
Input signal level (0-dB)
0.707
VRMS
register 49, bits D7–D6)
fS = 48 kHz, 0-dB PGA gain, MIC input ac-shorted to
SNR
Signal-to-noise ratio
ground; measured as idle-channel noise,
80
91
dB
A-weighted(1) (2)
fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –60-dBFS
Dynamic range
input applied, referenced to 0.707-Vrms input, A-weighted (1)
91
dB
(2)
Total harmonic distortion +
fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2 dBFS
THD+N
–85
–70
dB
noise
input applied, referenced to 0.707 Vrms input
fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2 dBFS
THD
Total harmonic distortion
–91
dB
input applied, referenced to 0.707 Vrms input
Input capacitance
MIC input
2
pF
Microphone Bias
Page 1 / register 46, bits D1–D0 = 10
2.25
2.5
2.75
Voltage output
V
Page 1 / register 46, bits D1–D0 = 01
2
At 4-mA load current, page 1 / register 46,
5
bits D1–D0 = 10 (MICBIAS = 2.5 V)
Voltage regulation
mV
At 4-mA load current, page 1 / register 46,
7
bits D1–D0 = 01 (MICBIAS = 2 V)
Audio ADC Digital Decimation Filter Characteristics
See Section 5.5.4.4 for audio ADC decimation filter characteristics.
AUDIO DAC
DAC Headphone Output, AC-coupled load = 16
(single-ended),
driver gain = 0 dB, parasitic capacitance = 30 pF
Full-scale output voltage (0
Output common-mode setting = 1.65 V
0.707
Vrms
dB)
SNR
Signal-to-noise ratio
Measured as idle-channel noise, A-weighted(1) (2)
80
95
dB
THD
Total harmonic distortion
0-dBFS input
–85
–65
dB
Total harmonic distortion +
THD+N
0-dBFS input
–82
–60
dB
noise
Mute attenuation
87
dB
PSRR
Power-supply rejection ratio(3)
Ripple on HPVDD (3.3 V) = 200 mVp-p at 1 kHz
–62
dB
RL = 32 , THD+N ≤ –60 dB
20
PO
Maximum output power
mW
RL = 16 , THD+N ≤ –60 dB
60
DAC Lineout (HP Driver in Lineout Mode)
SNR
Signal-to-noise ratio
Measured as idle-channel noise, A-weighted
95
dB
THD
Total harmonic distortion
0-dBFS input, 0-dB gain
–86
dB
Total harmonic distortion +
THD+N
0-dBFS input, 0-dB gain
–83
dB
noise
(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 headphone-out PSRR measurement is calculated as PSRR = 20 × log(
ΔVHPL / ΔVHPVDD).
Copyright 2009, Texas Instruments Incorporated
ELECTRICAL SPECIFICATIONS
7
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Product Folder Link(s): TLV320AIC3111
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