TLV320AIC27_05 Datasheet, PDF (7/54 Pages) Texas Instruments – STEREO AUDIO CODEC

TLV320AIC27
STEREO AUDIO CODEC
SLAS253A – MARCH 2000 – REVISED SEPTEMBER 2000
electrical characteristics over operating temperature range, AV_DD = 5 V, DV_DD = 3.3 V, GND = 0 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
Digital Logic Levels (DVDD = 3.3 V or 5 V)
VIL
Input low level
AVSS – 0.3
VIH
Input high level
2.2
VOL
Output low
VOH
Output high
0.9 × DVDD
Analog I/O Levels (input signals on any inputs, outputs on LINEOUT L, R, and MONOOUT)
Input level
Minimum input
impedance = 10 kΩ
AVSS –100 mV
Output level
Into 10 kΩ load
AVSS +100 mV
TYP
Near rail
to rail
MAX
0.8
AVDD + 0.3
0.1 × DVDD
AVDD +100 mV
AVDD –100 mV
UNIT
V
V
V
V
V
V
Reference Levels
CAP2
Reference input/output
CAP2 impedance
VREF
Mixer reference
2/5 AVDD
AVDD/2
75
Buffered
CAP2
3/5 AVDD V
kΩ
V
VREFOUT MIC reference
Buffered
CAP2
V
CAP1
ADC reference
Buffered
CAP2
V
AFILT1
DAC reference
Buffered
CAP2
V
VREF current source (pins CAP1, AFILT2,
VREF and VREFOUT)
AVDD = 5 V
5
15
mA
VREF current source (pins CAP1, AFILT1,
VREF and VREFOUT)
AVDD = 3 V
3
5
mA
DAC Circuit Specifications (AVDD = 5 V) 48-kHz sampling
SNR A-weighted (see Note 1)
Full-scale output voltage
VREF = 2.5 V
85
95
1
dB
Vrms
THD
–3-dB full-scale input
Frequency response
Transition band
Stop band
Out of band rejection
Spurious-tone reduction
PSRR
20 Hz to 20 kHz
ADC Circuit Specifications (AVDD = 5 V) 48-kHz sampling
SNR A-weighted (see Note 1)
ADC input for full-scale output
VREF = 2.5 V
74
20
19 200
28 800
75
96
–40
–100
40
90
1
dB
19 200 Hz
28 800 Hz
Hz
dB
dB
dB
dB
Vrms
THD
–6-dB voltage input
80
95
dB
Frequency response
20
19 200 Hz
Transition band
19 200
28 800 Hz
Stop band
28 800
Hz
Stop-band rejection
–74
dB
PSRR
20 Hz to 20 kHz
40
dB
NOTE 1: SNR is the ratio of 0-dB signal output level to the output level with no signal, measured A-weighted over a 20 Hz to 20 kHz bandwidth.
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