参数资料
型号: TLV320AIC24KIPFBRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: GREEN, PLASTIC, TQFP-48
文件页数: 50/52页
文件大小: 981K
代理商: TLV320AIC24KIPFBRG4
www.ti.com
ADC DYNAMIC PERFORMANCE
ADC CHANNEL CHARACTERISTICS
DAC PATH FILTER
TLV320AIC20, TLV320AIC21
TLV320AIC24, TLV320AIC25
TLV320AIC20K, TLV320AIC24K
SLAS363D – MARCH 2002 – REVISED APRIL 2005
With IIR Filter, FS = 8 KHz
TEST
PARAMETER
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
CONDITIONS
AIC20/21/24/25
AIC20k/24k
VI = -3 dB
82
SNR
Signal-to-noise ratio
VI = -9 dB
76
VI = -3 dB
83
THD
Total harmonic distortion
dB
VI = -9 dB
77
VI = -3 dB
78
Signal-to-harmonic
THD+N
distortion + noise
VI = -9 dB
70
AIC20/21/24/25/20k/24k
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI(pp)
Differential-ended input level
PGA gain = 0 dB
4
V
VIO
Input offset voltage
±5
mV
IB
Input bias current
125
A
Common mode voltage
1.35
V
Dynamic range
VI = -3 dB
87
dB
Zero Digital
Mute attenuation
PGA = MUTE
dB
Code
Intrachannel isolation
87
dB
EG
Gain error
VI = -3 dB at 1020 Hz
-0.45
dB
EO(ADC)
ADC converter offset error
±15
mV
Common-mode rejection ratio at INMx and
CMRR
VI = -100 mV at 1020 Hz
50
dB
INPx
Idle channel noise
V(INP,INM,MICIN) = 0 V
70
Vrms
Ri
Input resistance
TA = 25°C
10
k
Ci
Input capacitance
TA = 25°C
2
pF
IIR
5/fs
S
Channel delay
FIR
17/fs
S
FS = 8 KHz (1)(2)
FIR FILTER
IIR FILTER
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
PATH FILTER, FS = 8 KHz
0 Hz to 200 Hz
0.1
0.05
200 Hz to 300 Hz
-0.05
0.05
300 Hz to 2.4 KHz
-0.25
0.15
-0.1
0.1
2.4 kHz to 3 kHz
-0.3
0.1
-0.2
0.1
Filter gain relative to gain
dB
at 1020 Hz
3 kHz to 3.4 KHz
-0.55
0.05
-0.25
0.05
3.4 kHz to 3.6 KHz
-30
0
4 KHz
-28
-34
4.5 KHz to 72 KHZ
-70
(1)
The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The input signal is the digital equivalent of a
sine wave (digital full scale = 0 dB). The nominal differential DAC channel output with this input condition is 4 VI(PP) . The pass band is
0 to 3600 Hz for an 8-kHz sample rate. This pass band scales linearly with the conversion rate.
(2)
The filter characteristics are specified by design and are not tested in production.
7
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