AD7988-1 Analog Devices, AD7988-1 Datasheet - Page 3

• Manufacturer Part Number: AD7988-1
• Description: 16-Bit, 100ksps, Ultra Low Power 16-Bit SAR ADC
• Manufacturer: Analog Devices

Specifications of AD7988-1

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p,5V p-p,Uni (Vref),Uni 5.0V
• Pkg Type: SOP

Data Sheet
SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, V
Table 2.
Parameter
RESOLUTION
ANALOG INPUT
ACCURACY
THROUGHPUT
AC ACCURACY
1
2
3
LSB means least significant bit. With the 5 V input range, 1 LSB is 76.3 µV.
See the Terminology section. These specifications include full temperature range variation, but not the error contribution from the external reference.
All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
Voltage Range
Absolute Input Voltage
Analog Input CMRR
Leakage Current at 25°C
Input Impedance
No Missing Codes
Differential Linearity Error
Integral Linearity Error
Transition Noise
Gain Error, T
Gain Error Temperature Drift
Zero Error, T
Zero Temperature Drift
Power Supply Sensitivity
AD7988-1
AD7988-5
Dynamic Range
Oversampled Dynamic Range
Signal-to-Noise Ratio, SNR
Spurious-Free Dynamic Range, SFDR
Total Harmonic Distortion, THD
Signal-to-(Noise + Distortion), SINAD
Conversion Rate
Transient Response
Conversion Rate
Transient Response
MIN
MIN
to T
to T
MAX
MAX
2
2
REF
= 5 V, T
Test Conditions/Comments
IN+ − IN−
IN+
IN−
f
Acquisition phase
V
V
V
V
V
V
VDD = 2.5 V ± 5%
VIO ≥ 2.3 V up to 85°C, VIO ≥ 3.3 V above 85°C up to
125°C
Full-scale step
VIO ≥ 2.3 V up to 85°C, VIO ≥ 3.3 V above 85°C up to
125°C
Full-scale step
V
V
f
f
f
f
f
f
f
IN
O
IN
IN
IN
IN
IN
IN
REF
REF
REF
REF
REF
REF
REF
REF
= 10 kSPS
= 1 kHz
= 10 kHz, V
= 10 kHz, V
= 10 kHz
= 10 kHz
= 10 kHz, V
= 10 kHz, V
= 5 V
= 2.5 V
= 5 V
= 2.5 V
= 5 V
= 2.5 V
= 5 V
= 2.5 V
A
= –40°C to +125°C, unless otherwise noted.
REF
REF
REF
REF
= 5 V
= 2.5 V
= 5 V
= 2.5 V
Rev. A | Page 3 of 24
Min
16
0
−0.1
−0.1
16
−0.9
−1.25
−0.5
0
0
90
See the Analog Inputs section
AD7988-1/AD7988-5
Typ
60
1
±0.4
±0.55
±0.6
±0.65
0.6
1.0
±2
±0.35
±0.08
0.54
±0.1
92
87
111
91
86.5
−110
−114
91.5
87.0
Max
V
V
+0.1
+0.9
+1.25
+0.5
100
500
500
400
REF
REF
+ 0.1
Unit
Bits
V
V
V
dB
Bits
LSB
LSB
LSB
LSB
LSB
LSB
ppm/°C
LSB
kSPS
ns
kSPS
ns
dB
dB
dB
dB
dB
dB
dB
dB
dB
nA
LSB
mV
ppm/°C
3
3
3
3
3
3
3
3
3
1
1
1
1
1
1
1
1