AD7656-1 Analog Devices, AD7656-1 Datasheet - Page 5

• Manufacturer Part Number: AD7656-1
• Description: 250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC
• Manufacturer: Analog Devices

Specifications of AD7656-1

• Resolution (bits): 16bit
• # Chan: 6
• Sample Rate: 250kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Bip
• Ain Range: 10V p-p,20 V p-p,Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

AD7657-1
V
10 V to 16.5 V, V
T
Table 2.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT/OUTPUT
LOGIC INPUTS
MAX
REF
Signal-to-(Noise + Distortion)
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Aperture Delay
Aperture Delay Matching
Aperture Jitter
Channel-to-Channel Isolation
Full-Power Bandwidth
Resolution
No Missing Codes
Integral Nonlinearity
Positive Full-Scale Error
Positive Full-Scale Error Matching
Bipolar Zero-Scale Error
Bipolar Zero-Scale Error Matching
Negative Full-Scale Error
Negative Full-Scale Error Matching
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Reference Input Voltage Range
DC Leakage Current
Input Capacitance
Reference Output Voltage
Long-Term Stability
Reference Temperature Coefficient
Input High Voltage (V
Input Low Voltage (V
Input Current (I
Input Capacitance (C
= 2.5 V internal/external, AV
, unless otherwise noted.
(SINAD)
(SFDR)
Second-Order Terms
Third-Order Terms
1
1
SS
IN
)
= −10 V to −16.5 V; for the ±2 × V
2
2
1
INL
IN
INH
)
2
)
1
1
)
1
1
1
1
1
CC
1
1
1
= 4.75 V to 5.25 V, DV
Min
14
14
−4 × V
−2 × V
2.5
2.49
0.7 × V
REF
REF
DRIVE
Typ
82.5
83.5
−105
−100
−109
−104
35
−100
4.5
2.2
±1
10
14
18.5
150
6
REF
range, V
CC
Max
−90
10
4
±1
±0.95
±0.366
±0.04
±0.0427
±0.95
±0.366
+4 × V
+2 × V
±1
2.5
±1
2.51
25
0.3 × V
±10
10
Rev. C | Page 5 of 32
= 4.75 V to 5.25 V, V
DD
REF
REF
DRIVE
= 5 V to 16.5 V, V
Unit
dB
dB
dB
dB
dB
dB
dB
ns
ns
ps
dB
MHz
MHz
Bits
Bits
LSB
% FSR
% FSR
% FSR
% FSR
% FSR
% FSR
V
V
μA
pF
pF
V
μA
pF
V
ppm
ppm/°C
ppm/°C
V
V
μA
pF
DRIVE
SS
Test Conditions/Comments
f
fa = 10.5 kHz, fb = 9.5 kHz
f
@ −3 dB
@ −0.1 dB
±0.27% FSR typical
±0.016% FSR typical
±0.27% FSR typical
See Table 8 for minimum V
RNGx bits or RANGE pin = 0
RNGx bits or RANGE pin = 1
±4 × V
±2 × V
REF
1000 hours
Typically 10 nA, V
= 2.7 V to 5.25 V; for the ±4 × V
= −5 V to −16.5 V; f
IN
IN
AD7656-1/AD7657-1/AD7658-1
= 10 kHz sine wave
on unselected channels up to 100 kHz
EN/ DIS
REF
REF
= 1
range when in track
range when in track
IN
= 0 V or V
SAMPLE
= 250 kSPS, T
DD
DRIVE
/V
SS
REF
for each range
range, V
A
= T
DD
MIN
=
to