参数资料
型号: TLC320AD55CDW
厂商: TEXAS INSTRUMENTS INC
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO28
封装: PLASTIC, SOP-28
文件页数: 22/41页
文件大小: 203K
代理商: TLC320AD55CDW
4–3
4.4.3.3
ADC Signal-to-Distortion+Noise (see Note 5)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = – 9 dB
80
83
VI = – 1 dB
72
76
Total harmonic distortion+noise (THD+N)
VI = – 40 dB
40
45
dB
VI = – 65 dB
14
20
VI(AUXM, AUXP) = – 9 dB
72
77
NOTE 5: The test condition is a 1020 Hz input signal with an 8 kHz conversion rate. Input and output voltages are
referred to VDD /2.
4.4.4
ADC Channel
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Dynamic range
86
dB
Interchannel isolation
80
dB
Gain error
VI = – 1 dB at 1020 Hz
±0.5
dB
Gain error, dc
INP = 3 V, INM = 2 V
±0.6
dB
Off-set error, ADC converter
8
mV
CMRR
Common-mode rejection ratio INM, INP or
AUXM, AUXP
VI = 0 dB at 1020 kHz
80
dB
Idle channel noise (on-chip reference)
50
V rms
Ri
Input resistance
TA = 25°C
70
100
k
4.4.5
DAC Path Filter (see Note 6)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
20 Hz
–0.5
0.08
0.15
200 Hz
– 0.5
0.08
0.15
300 Hz to 3 kHz
– 0.15
0.08
0.15
Filter gain relative to gain at 1020 Hz
3.3 kHz
– 0.35
0.11
0.3
dB
3.4 kHz
–1
– .48
– 0.1
4 kHz
–20
–14
≥ 4.6 kHz
–40
NOTE 6: 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 peak-to-peak
output voltage with this input condition is 6 V. The pass band is 0 to 3600 Hz.
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TLC320AD55CDWR SPECIALTY ANALOG CIRCUIT, PDSO28
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