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ADS8331 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
ADS8331 2.7V~5.5V, 16 Bit 500KSPS Low Power Serial ADC / Low-Power, 16-Bit, 500kSPS, 4-/8-Channel Unipolar Input TI
Texas Instruments TI
ADS8331 Datasheet PDF : 39 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADS8331
ADS8332
www.ti.com
SBAS363 – DECEMBER 2009
ELECTRICAL CHARACTERISTICS: VA = 5V
At TA = –40°C to +85°C, VA = 5V, VBD = 1.65V to 5V, VREF = 4.096V, and fSAMPLE = 500kSPS, unless otherwise noted.
ADS8331I, ADS8332I
ADS8331IB, ADS8332IB
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
MIN TYP
MAX UNIT
ANALOG INPUT
Full-scale input voltage (1)
Absolute input voltage
INX – COM, ADCIN – COM
INX, ADCIN
COM
0
AGND – 0.2
AGND – 0.2
VREF
0
VA + 0.2 AGND – 0.2
AGND + 0.2 AGND – 0.2
VREF
V
VA + 0.2
V
AGND + 0.2
V
Input capacitance
ADCIN
40
45
40
45 pF
Input leakage current
Unselected ADC input
–1
1
–1
1 nA
SYSTEM PERFORMANCE
Resolution
16
16
Bits
No missing codes
16
16
Bits
INL
Integral linearity
–3 ±2
3
–2 ±1
2 LSB(2)
DNL
EO
Differential linearity
Offset error(3)
Offset error drift
–1 ±1
–1 ±0.23
±1
2
–1 ±0.5
1.5 LSB(2)
1
–1 ±0.23
1 mV
±1
PPM/°C
Offset error matching
–0.125
0.125
–0.125
0.125 mV
EG
Gain error
Gain error drift
–0.25 –0.06
±0.02
0.25
–0.25 –0.06
±0.02
0.25 %FSR
PPM/°C
Gain error matching
–0.003
0.003
–0.003
0.003 %FSR
Transition noise
30
30
μV RMS
PSRR Power-supply rejection ratio
78
78
dB
SAMPLING DYNAMICS
tCONV
tSAMPLE1
tSAMPLE2
Conversion time
Acquisition time
Throughput rate
Manual-Trigger mode
Auto-Trigger mode
18
3
3
500
18
3
3
CCLK
CCLK
CCLK
500 kSPS
Aperture delay
10
10
ns
Aperture jitter
10
10
ps
Step response
100
100
ns
Overvoltage recovery
100
100
ns
DYNAMIC CHARACTERISTICS
THD
SNR
SINAD
SFDR
Total harmonic distortion (4)
Signal-to-noise ratio
Signal-to-noise + distortion
Spurious-free dynamic range
Crosstalk
–3dB small-signal bandwidth
VIN = 4.096VPP at 1kHz
VIN = 4.096VPP at 10kHz
VIN = 4.096VPP at 1kHz
VIN = 4.096VPP at 10kHz
VIN = 4.096VPP at 1kHz
VIN = 4.096VPP at 10kHz
VIN = 4.096VPP at 1kHz
VIN = 4.096VPP at 10kHz
VIN = 4.096VPP at 1kHz
VIN = 4.096VPP at 100kHz
INX – COM with MUXOUT
tied to ADCIN
ADCIN – COM
–100
–94
90.5
88
90
87
101
96
119
107
22
40
–100
–95
91.5
88
91
87
101
96
119
107
22
40
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
MHz
MHz
(1) Ideal input span; does not include gain or offset error.
(2) LSB means least significant bit.
(3) Measured relative to an ideal full-scale input (INX – COM) of 4.096V when VA = 5V.
(4) Calculated on the first nine harmonics of the input frequency.
Copyright © 2009, Texas Instruments Incorporated
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