EVAL-AD7689EDZ Datasheet, PDF (4/32 Pages) Analog Devices – 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC

AD7682/AD7689
Data Sheet
SPECIFICATIONS
VDD = 2.3 V to 5.5 V, VIO = 1.8 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
RESOLUTION
ANALOG INPUT
Voltage Range
Absolute Input Voltage
Analog Input CMRR
Leakage Current at 25°C
Input Impedance¹
THROUGHPUT
Conversion Rate
Full Bandwidth²
¼ Bandwidth²
Transient Response
ACCURACY
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Transition Noise
Gain Error⁴
Gain Error Match
Gain Error Temperature Drift
Offset Error⁴
Offset Error Match
Offset Error Temperature Drift
Power Supply Sensitivity
AC ACCURACY⁵
Dynamic Range
Signal-to-Noise
SINAD
Conditions/Comments Min
16
AD7689A
Typ Max
Unipolar mode
Bipolar mode
Positive input, unipolar
and bipolar modes
Negative or COM input,
unipolar mode
Negative or COM input,
bipolar mode
fIN = 250 kHz
Acquisition phase
0
−VREF/2
−0.1
−0.1
VREF/2 − 0.1 VREF/2
68
1
+VREF
+VREF/2
VREF + 0.1
+0.1
VREF/2 + 0.1
VDD = 4.5 V to 5.5 V
0
VDD = 2.3 V to 4.5 V
0
VDD = 4.5 V to 5.5 V
0
VDD = 2.3 V to 4.5 V
0
Full-scale step,
full bandwidth
Full-scale step,
¼ bandwidth
15
−4
REF = VDD = 5 V
−32
VDD = 4.5 V to 5.5 V
−32
VDD = 2.3 V to 4.5 V
VDD = 5 V ± 5%
fIN = 20 kHz, VREF = 5 V
fIN = 20 kHz, VREF = 4.096 V,
internal REF
fIN = 20 kHz, VREF = 2.5 V,
internal REF
fIN = 20 kHz, VREF = 5 V
fIN = 20 kHz, VREF = 5 V,
−60 dB input
fIN = 20 kHz, VREF = 4.096 V
internal REF
fIN = 20 kHz, VREF = 2.5 V
internal REF
250
200
62.5
50
1.8
14.5
+4
0.6
+32
±2
±1
+32
±32
±2
±1
±1.5
90.5
90
89
86
89
30.5
88
86
AD7682B/AD7689B
Min
Typ Max
16
0
−VREF/2
−0.1
+VREF
+VREF/2
VREF + 0.1
−0.1
+0.1
VREF/2 − 0.
1
VREF/2
68
1
VREF/2 + 0.1
0
250
0
200
0
62.5
0
50
1.8
14.5
16
−1.5
±0.4 +1.5
−1
±0.25 +1.5
0.5
−8
±1
+8
−4
±0.5 +4
±1
−8
±1
+8
±5
−4
±0.5 +4
±1
±1.5
93.8
92.5
93.5
91
92.3
87.5
88.8
91
92.5
33.5
90
91
87
88.4
Unit
Bits
V
V
V
V
dB
nA
kSPS
kSPS
kSPS
kSPS
μs
μs
Bits
LSB ³
LSB
LSB
LSB
LSB
ppm/°C
LSB
LSB
LSB
ppm/°C
LSB
dB⁶
dB
dB
dB
dB
dB
dB
dB
Rev. D | Page 4 of 32