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Electrical Characteristics (continued)
Minimum and maximum specifications are at T
AVDD = 5 V, DVDD = 3 V, V
PARAMETER
SYSTEM PERFORMANCE
Resolution
NMC
No missing codes
DNL
Differential nonlinearity
INL
Integral nonlinearity
E
Gain error
G
Gain error matching
(channel-to-channel)
Gain error temperature drift
E
Offset error
O
Offset error matching
(channel-to-channel)
Offset error temperature drift
SAMPLING DYNAMICS
t
Conversion time
CONV
t
Acquisition time
ACQ
Maximum throughput rate
f
S
without latency
(3) LSB = least significant bit.
(4) This parameter is the endpoint INL, not best-fit INL.
(5) FSR = full-scale range.
(6) Does not include the shift in offset over time.
Copyright © 2015, Texas Instruments Incorporated
= –40°C to 125°C. Typical specifications are at T
A
= 4.096 V (internal), and f
REF
TEST CONDITIONS
(4)
At T
= 25°C, all input ranges
A
At T
= 25°C, all input ranges
A
All input ranges
At T
= 25°C,
A
input range = ±2.5 × V
At T
= 25°C,
A
input range = ±1.25 × V
At T
= 25°C,
A
input range = ±0.625 × V
At T
= 25°C,
A
input range = 0 to 2.5 × V
At T
= 25°C,
A
input range = 0 to 1.25 × V
At T
= 25°C,
A
input range = ±2.5 × V
At T
= 25°C,
A
input range = ±1.25 × V
At T
= 25°C,
A
input range = ±0.625 × V
At T
= 25°C,
A
input range = 0 to 2.5 × V
At T
= 25°C,
A
input range = 0 to 1.25 × V
All input ranges
Product Folder Links:
= 500 kSPS, unless otherwise noted.
SAMPLE
MIN
18
18
–0.99
–5
(6)
REF
REF
REF
REF
REF
(6)
REF
REF
REF
REF
REF
1175
ADS8694 ADS8698
ADS8694, ADS8698
SBAS686 – JULY 2015
= 25°C.
A
TYP
MAX
UNIT
Bits
Bits
(3)
±0.5
2
LSB
±1.5
5
LSB
(5)
±0.02
±0.05 %FSR
±0.02
±0.05
%FSR
1
4
ppm/°C
±0.5
±1
±0.5
±1
±0.5
±1.5
mV
±0.5
±2
±0.5
±2
±0.5
±1
±0.5
±1
±0.5
±1.5
mV
±0.5
±2
±0.5
±2
1
3
ppm/°C
825
ns
ns
500
kSPS
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TEST
(1)
LEVEL
A
A
A
A
A
A
B
A
A
A
A
A
A
A
A
A
A
B
A
A
A
7
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