AD7980 Analog Devices, AD7980 Datasheet - Page 3

• Manufacturer Part Number: AD7980
• Manufacturer: Analog Devices

Specifications of AD7980

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

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 @ 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
Conversion Rate
Transient Response
Dynamic Range
Oversampled Dynamic Range
Signal-to-Noise Ratio, SNR
Spurious-Free Dynamic Range, SFDR
Total Harmonic Distortion, THD
Signal-to-(Noise + Distortion), SINAD
MIN
MIN
to T
to T
MAX
MAX
2
2
REF
= 5 V, T
Conditions
IN+ − IN−
IN+
IN−
f
Acquisition phase
REF = 5 V
REF = 2.5 V
REF = 5 V
REF = 2.5 V
REF = 5 V
REF = 2.5 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
V
V
f
f
f
f
f
f
f
IN
O
IN
IN
IN
IN
IN
IN
REF
REF
= 10 kSPS
= 100 kHz
= 10 kHz, V
= 10 kHz, V
= 10 kHz
= 10 kHz
= 10 kHz, V
= 10 kHz, 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. B | Page 3 of 28
Min
16
0
−0.1
−0.1
16
−1.0
−2.5
−1.0
0
Analog Input section
±0.5
±0.35
Typ
60
1
±0.7
±1.5
±1.65
0.75
1.2
±2
±0.08
0.54
±0.1
91
86
110
90
85.5
−103.5
−101
90.5
86.0
A Grade
See the
Max
V
V
+0.1
+2.0
+2.5
+1.0
1
290
REF
REF
+ 0.1
Min
16
0
−0.1
−0.1
16
−0.9
−1.25
−0.5
0
90
Analog Input section
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
B Grade
See the
Max
V
V
+0.1
+0.9
+1.25
+0.5
1
290
REF
REF
+ 0.1
AD7980
Unit
Bits
V
V
V
dB
nA
Bits
LSB
LSB
LSB
LSB
LSB
LSB
LSB
ppm/°C
mV
ppm/°C
LSB
MSPS
ns
dB
dB
dB
dB
dB
dB
dB
dB
dB
3
3
3
3
3
3
3
3
3
1
1
1
1
1
1
1
1