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ADS8481 Datasheet(PDF) 3 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Part No. ADS8481
Description  18-BIT, 1-MSPS, PSEUDO-DIFFERENTIAL UNIPOLAR INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
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Maker  BURR-BROWN [Burr-Brown (TI)]
Homepage  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

ADS8481 Datasheet(HTML) 3 Page - Burr-Brown (TI)

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SPECIFICATIONS
ADS8481
SLAS385A – FEBRUARY 2006 – REVISED MARCH 2006
T
A = –40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 1 MSPS (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG INPUT
Full-scale input voltage(1)
+IN – (–IN)
0
Vref
V
+IN
–0.2
Vref +0.2
Absolute input voltage
V
–IN
–0.2
0.2
Input capacitance
65
pF
Input leakage current
1
nA
SYSTEM PERFORMANCE
Resolution
18
Bits
ADS8481I
18
18
No missing codes
Bits
ADS8481IB
18
ADS8481I
–5 –1.5/+1.9
5
LSB
Integral linearity(2)(3)
(18 bit)
ADS8481IB
–3.5 –1.5/+1.9
3.5
ADS8481I
–1 –0.5/+0.7
2.5
LSB
Differential linearity
(18 bit)
ADS8481IB
–1 –0.5/+0.7
1.5
ADS8481I
–0.5
±0.1
0.5
Offset error(4)
mV
ADS8481IB
–0.5
±0.1
0.5
Offset error temperature drift
±0.2
ppm/°C
ADS8481I
Vref = 4.096 V
–0.075
±0.05
0.075
%FS
Gain error(4)(5)
ADS8481IB
Vref = 4.096 V
–0.075
±0.05
0.075
%FS
Gain error temperature drift
±0.6
ppm/°C
Noise
30
µV RMS
Power supply rejection ratio
At 3FFFFh output code
60
dB
SAMPLING DYNAMICS
Conversion time
650
710
ns
Acquisition time
250
ns
Throughput rate
1
MHz
Aperture delay
4
ns
Aperture jitter
5
ps
Step response
150
ns
Over voltage recovery
150
ns
(1)
Ideal input span, does not include gain or offset error.
(2)
LSB means least significant bit
(3)
This is endpoint INL, not best fit.
(4)
Measured relative to an ideal full-scale input [+IN – (–IN)] of 4.096 V
(5)
This specification does not include the internal reference voltage error and drift.
3
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