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ADS8472 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. ADS8472
Description  16-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE
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Maker  BURR-BROWN [Burr-Brown (TI)]
Homepage  http://www.burr-brown.com
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SPECIFICATIONS
ADS8472
SLAS514 – DECEMBER 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)
–Vref
Vref
V
+IN
–0.2
Vref + 0.2
Absolute input voltage
V
–IN
–0.2
Vref + 0.2
Common-mode input range
(Vref)/2 – 0.2
(Vref)/2
(Vref)/2 + 0.2
V
Input capacitance
65
pF
Input leakage current
1
nA
SYSTEM PERFORMANCE
Resolution
16
Bits
ADS8472I
16
No missing codes
Bits
ADS8472IB
16
ADS8472I
–1
±0.4
1
LSB
Integral linearity (2)
(16 bit)(3)
ADS8472IB
–0.65
±0.4
0.65
ADS8472I
–0.75
±0.3
0.75
LSB
Differential linearity
(16 bit)
ADS8472IB
–0.5
±0.3
0.5
ADS8472I
–0.5
±0.1
0.5
Offset error(4)
mV
ADS8472IB
–0.5
±0.1
0.5
ADS8472I
±0.05
Offset error temperature drift
ppm/
°C
ADS8472IB
±0.05
ADS8472I
Vref = 4.096 V
–0.1
±0.035
0.1
%FS
Gain error(4)(5)
ADS8472IB
Vref = 4.096 V
–0.1
±0.035
0.1
%FS
ADS8472I
±0.4
Gain error temperature drift
ppm/
°C
ADS8472IB
±0.4
At dc (
±0.2 V around V
ref/2)
65
Common-mode rejection ratio
dB
+IN – (–IN) = 1 Vpp at 1 MHz
55
Noise
25
µV RMS
Power supply rejection ratio
At 1FFFFh output code
60
dB
SAMPLING DYNAMICS
Conversion time
625
650
ns
Acquisition time
320
350
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)
This is endpoint INL, not best fit.
(3)
LSB means least significant bit
(4)
Measured relative to an ideal full-scale input [+IN – (–IN)] of 8.192 V
(5)
This specification does not include the internal reference voltage error and drift.
3
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