ADS8402 Datasheet, PDF (3/25 Pages) Burr-Brown (TI) – 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE

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ADS8402
SLAS154B – DECEMBER 2002 – REVISED MAY 2003
SPECIFICATIONS
TA = –40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 1.25 MHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
Analog Input
Full-scale input voltage (see Note 1)
Absolute input voltage
+IN – –IN
+IN
–IN
–Vref
–0.2
–0.2
Common-mode input range
Input capacitance
ADS8402I
(Vref/2) – 0.2 Vref/2
25
Input leakage current
0.5
System Performance
Resolution
16
ADS8402I
15
No missing codes
ADS8402IB
16
Integral linearity (see Notes 2 and 3)
Differential linearity
ADS8402I
ADS8402IB
ADS8402I
ADS8402IB
–6 ±2.5
–3.5
±2
–2
±1
–1 ±0.75
Offset error (see Note 4)
ADS8402I
ADS8402IB
–3
±1
–1.5 ±0.5
Gain error (see Notes 4 and 5)
ADS8402I
ADS8402IB
–0.15
–0.098
Common-mode rejection ratio
Noise
At dc (±0.2 V around Vref/2)
80
+IN – –IN = 1 Vpp at 1 MHz
80
60
At 7FFFh output code,
DC Power supply rejection ratio
+VA = 4.75 V to 5.25 V,
1
Vref = 4.096 V, See Note 4
Sampling Dynamics
Conversion time
Acquisition time
150
Throughput rate
Aperture delay
2
Aperture jitter
25
Step response
100
Overvoltage recovery
100
(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 8.192 V}
(5) _{This specification does not include the internal reference voltage error and drift.}
MAX
Vref
Vref + 0.2
Vref + 0.2
(Vref/2) + 0.2
6
3.5
3
2
3
1.5
0.15
0.098
610
1.25
UNIT
V
V
V
pF
nA
Bits
Bits
LSB
LSB
mV
mV
%FS
dB
µV RMS
LSB
ns
ns
MHz
ns
ps
ns
ns
3