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ADS7253 数据表(PDF) 8 Page - Texas Instruments

部件名 ADS7253
功能描述  ADSxx54 Dual, High-Speed, 16-, 14-, and 12-Bit, Simultaneous-Sampling, Analog-to-Digital Converters
PDF  73 Pages
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制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

ADS7253 数据表(HTML) 8 Page - Texas Instruments

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ADS8354, ADS7854, ADS7254
SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014
www.ti.com
7.7 Electrical Characteristics: ADS7254
All minimum and maximum specifications are at TA = –40°C to 125°C, AVDD = 5 V, DVDD = 3.3 V, VREF_A = VREF_B = VREF =
2.5 V (internal), and fDATA = 1 MSPS, unless otherwise noted.
Typical values are at TA = 25°C, AVDD = 5 V, and DVDD = 3.3 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RESOLUTION
Resolution
12
Bits
DC ACCURACY(1)
NMC
No missing codes
12
Bits
INL
Integral nonlinearity
–1
±0.25
1
LSB
DNL
Differential nonlinearity
–0.99
±0.25
1
LSB
EIO
Input offset error
–1
±0.5
1
mV
EIO match
ADC_A to ADC_B
–1
±0.5
1
mV
dEIO/dT
Input offset thermal drift
±1
μV/°C
EG
Gain error
Referenced to the voltage at REFIO_x
–0.1
±0.05
0.1
%FS
EG match
ADC_A to ADC_B
–0.1
±0.05
0.1
%FS
dEG/dT
Gain error thermal drift
Referenced to the voltage at REFIO_x
±1
ppm/°C
CMRR
Common-mode rejection ratio
Both ADCs, dc to 20 kHz
70
dB
AC ACCURACY(2)
VREF = 2.5 V,
73.4
dB
±VREF input range
VREF = 2.5 V,
SINAD
Signal-to-noise + distortion
72.4
73.4
dB
±2 × VREF input range
VREF = 5 V (external),
73.9
dB
±VREF input range
VREF = 2.5 V,
73.5
dB
±VREF input range
VREF = 2.5 V,
SNR
Signal-to-noise ratio
72.5
73.5
dB
±2 × VREF input range
VREF = 5 V (external),
74
dB
±VREF input range
VREF = 2.5 V,
–92
dB
±VREF input range
VREF = 2.5 V,
THD
Total harmonic distortion
–92
dB
±2 × VREF input range
VREF = 5 V (external),
–92
dB
±VREF input range
VREF = 2.5 V,
95
dB
±VREF input range
VREF = 2.5 V,
SFDR
Spurious-free dynamic range
95
dB
±2 × VREF input range
VREF = 5 V (external),
95
dB
±VREF input range
fIN = 15 kHz at 10 %FS,
ISOXT
ADC-to-ADC isolation
–100
dB
fNOISE = 25 kHz at FS
(1)
LSB = least significant bit.
(2)
All ac parameters are tested at –0.5 dBFS and a 20-kHz input frequency.
8
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Copyright © 2013–2014, Texas Instruments Incorporated
Product Folder Links: ADS8354 ADS7854 ADS7254



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