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AD7688BRMZ Datasheet(PDF) 3 Page - Analog Devices

Part # AD7688BRMZ
Description  16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7688BRMZ Datasheet(HTML) 3 Page - Analog Devices

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AD7688
Rev. A | Page 3 of 28
SPECIFICATIONS
VDD = 4.5 V to 5.5 V, VIO = 2.3 V to VDD, VREF = VDD, TA = –40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
Conditions
Min
Typ
Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
IN+ − IN−
−VREF
+VREF
V
Absolute Input Voltage
IN+, IN−
−0.1
VREF + 0.1
V
Common-Mode Input Range
IN+, IN−
0
VREF/2
VREF/2 + 0.1
V
Analog Input CMRR
fIN = 250 kHz
65
dB
Leakage Current at 25°C
Acquisition phase
1
nA
Input Impedance
See the Analog Input section
ACCURACY
No Missing Codes
16
Bits
Differential Linearity Error
−1
±0.4
+1
LSB1
Integral Linearity Error
−1.5
±0.4
+1.5
LSB
Transition Noise
REF = VDD = 5 V
0.4
LSB
Gain Error2, TMIN to TMAX
±2
±6
LSB
Gain Error Temperature Drift
±0.3
ppm/°C
Zero Error2, TMIN to TMAX
±0.1
±1.6
mV
Zero Temperature Drift
±0.3
ppm/°C
Power Supply Sensitivity
VDD = 5V
± 5%
±0.05
LSB
THROUGHPUT
Conversion Rate
0
500
kSPS
Transient Response
Full-scale step
400
ns
AC ACCURACY
Dynamic Range
VREF = 5 V
95.8
96.5
dB3
Signal-to-Noise
fIN = 20 kHz, VREF = 5 V
94
95.5
dB
fIN = 20 kHz, VREF = 5 V
92.5
dB
Spurious-Free Dynamic Range
fIN = 20 kHz
−118
dB
Total Harmonic Distortion
fIN = 20 kHz
−118
dB
Signal-to-(Noise + Distortion)
fIN = 20 kHz, VREF = 5 V
93.5
95
dB
fIN = 20 kHz, VREF = 5 V, −60 dB input
36.5
dB
Intermodulation Distortion4
115
dB
1 LSB means least significant bit. With the ±5 V input range, one LSB is 152.6 μV.
2 See the Terminology section. These specifications do include full temperature range variation but do not include the error contribution from the external reference.
3All specifications in dB are referred to a full-scale input FS. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified.
4 fIN1 = 21.4 kHz, fIN2 = 18.9 kHz, each tone at −7 dB below full-scale.


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