參數(shù)資料
型號: TLV320AIC28RGZR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝: 7 X 7 MM, PLASTIC, QFN-48
文件頁數(shù): 45/85頁
文件大?。?/td> 1053K
代理商: TLV320AIC28RGZR
TLV320AIC28
SLAS418B FEBRUARY 2004 REVISED MAY 2005
www.ti.com
5
ELECTRICAL CHARACTERISTICS (continued)
At +25
°C, AVDD1, AVDD2, DRVDD, IOVDD = 3.3 V, BVDD = 3.9 V, DVDD = 1.8 V, Int. Vref = 2.5 V, Fs (Audio) = 48 kHz, unless otherwise
noted (continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
MICROPHONE INPUT TO ADC
MICIN_HED 1020 Hz sine wave input,
Fs = 48 ksps
Full-scale input voltage (0 dB)
0.707
Vrms
Input common mode
1.5
V
SNR
Measured as idle channel noise, 0 dB gain,
A-weighted
80
90
dBA
THD
0.63 Vrms input, 0-dB gain
81
72
dB
PSRR
217 Hz, 100 mV on AVDD1/2(1)
55
dB
PSRR
1020 Hz, 100 mV on AVDD1/2(1)
55
dB
Mute attenuation
Output code with 0.63 Vrms sine wave input at
1 kHz
0000H
Input resistance
Only ADC on
15
50
k
Input resistance
ADC and Sidetone on
8
16
k
Input capacitance
10
pF
HEADSET MICROPHONE BIAS
Register 1DH/Page 2, D7D8=00
3.3
Voltage range
Register 1DH/Page 2, D7D8=01
2.5
V
Voltage range
Register 1DH/Page 2, D7D8=1X
2
V
217 Hz, 100 mV on AVDD1/2
55
PSRR
217 Hz, 100 mV on BVDD
74
dB
PSRR
1020 Hz, 100 mV on AVDD1/2
55
dB
1020 Hz, 100 mV on BVDD
74
Sourcing current
Voltage drop <25 mV
5
mA
HANDSET MICROPHONE BIAS
Voltage range
Register 1DH/Page 2, D6=0
2.5
V
Voltage range
Register 1DH/Page 2, D6=1
2
V
PSRR
217 Hz, 100 mV on AVDD1/2
55
dB
PSRR
1020 Hz, 100 mV on AVDD1/2
55
dB
Sourcing current
Voltage drop <25 mV
5
mA
DAC INTERPOLATION FILTER
Pass band
20
0.45Fs
Hz
Pass band ripple
±0.06
dB
Transition band
0.45Fs
0.5501Fs
Hz
Stop band
0.5501Fs
7.455Fs
Hz
Stop band attenuation
65
dB
Filter group delay
21/Fs
Sec
De-emphasis error
±0.1
dB
(1) ADC PSRR measurement is calculated as:
PSRR
+ 20 log
10
VSIGsup
V
ADCOUT
where VSIGsup is the ac signal applied on AVDD1/2, which is 100 mVPP at 1020 Hz, and
V
ADCOUT +
Amplitude of Digital Output
Max Possible Digital Amplitude
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