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ADS8406 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. ADS8406
Description  16-BIT, 1.25 MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE
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Maker  BURR-BROWN [Burr-Brown (TI)]
Homepage  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

ADS8406 Datasheet(HTML) 3 Page - Burr-Brown (TI)

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SPECIFICATIONS
ADS8406
SLAS426A – AUGUST 2004 – REVISED DECEMBER 2004
T
A = –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
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
Input capacitance
25
pF
Input leakage current
0.5
nA
SYSTEM PERFORMANCE
Resolution
16
Bits
ADS8406I
15
No missing codes
Bits
ADS8406IB
16
ADS8406I
–4
±2
4
INL
Integral linearity (2)(3)
LSB
ADS8406IB
–2
±1
2
ADS8406I
–2
±1
2
DNL
Differential linearity
LSB
ADS8406IB
–1
±0.5
1.25
ADS8406I
–2.5
±1
2.5
mV
EO
Offset error(4)
ADS8406IB
–1.5
±0.5
1.5
mV
ADS8406I
–0.12
0.12
EG
Gain error(4)(5)
%FS
ADS8406IB
–0.098
0.098
At dc (0.2 V around Vref/2)
80
CMRR
Common mode rejection ratio
dB
+IN – (–IN) = 1 Vpp at 1 MHz
80
At 7FFFh output code, +VA
PSRR
DC Power supply rejection ratio
= 4.75 V to 5.25 V, Vref =
2
LSB
4.096 V (4)
SAMPLING DYNAMICS
Conversion time
500
650
ns
Acquisition time
150
ns
Throughput rate
1.25
MHz
Aperture delay
2
ns
Aperture jitter
25
ps
Step response
100
ns
Overvoltage recovery
100
ns
DYNAMIC CHARACTERISTICS
VIN = 8 Vpp at 100 kHz
–95
THD
Total harmonic distortion (6)
dB
VIN = 8 Vpp at 500 kHz
–90
SNR
Signal-to-noise ratio
VIN = 8 Vpp at 100 kHz
90
dB
SINAD
Signal-to-noise + distortion
VIN = 8 Vpp at 100 kHz
88
dB
VIN = 8 Vpp at 100 kHz
95
SFDR
Spurious free dynamic range
dB
VIN = 8 Vpp at 500 kHz
93
-3dB Small signal bandwidth
5
MHz
EXTERNAL VOLTAGE REFERENCE INPUT
Reference voltage at REFIN, Vref
2.5
4.096
4.2
V
Reference resistance (7)
500
k
(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.
(6)
Calculated on the first nine harmonics of the input frequency
(7)
Can vary
±20%
3


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