AD7656 Analog Devices, AD7656 Datasheet - Page 5

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

Specifications of AD7656

• Resolution (bits): 16bit
• # Chan: 6
• Sample Rate: 250kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Bip
• Ain Range: Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

AD7657
V
For ±4 × V
f
Table 2.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT/OUTPUT
LOGIC INPUTS
SAMPLE
REF
Signal-to-Noise + Distortion (SINAD)
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise (SFDR)
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
Second-Order Terms
Third-Order Terms
= 250 kSPS, T
REF
range: V
IN
)
3
A
3
= T
DD
2
INL
IN
INH
)
3
)
= 10 V to 16.5 V, V
2
MIN
2
)
2
to T
2
2
MAX
CC
2
2
2
2
= 4.75 V to 5.25 V, DV
, unless otherwise noted.
2
2
2
SS
= −10 V to −16.5 V; For ±2 × V
B Version
81.5
82.5
83.5
−90
−92
−100
−109
−104
10
4
35
−100
12
2
14
14
±1.5
±1
±0.75
±0.3
±0.0305
±0.0427
±0.75
±0.3
±4 × V
±2 × V
±1
10
14
2.5/3
±1
18.5
2.49/2.51
150
25
6
0.7 × V
0.3 × V
±1
10
REF
REF
DRIVE
DRIVE
1
CC
Rev. C | Page 5 of 32
1
= 4.75 V to 5.25 V, V
Y Version
81.5
82.5
83.5
−89
−92
−100
−109
−104
10
4
35
−100
12
2
14
14
±1.5
±1
±0.75
±0.3
±0.0305
±0.0427
±0.75
±0.3
±4 × V
±2 × V
±1
10
14
2.5/3
±1
18.5
2.49/2.51
150
25
6
0.7 × V
0.3 × V
±1
10
REF
REF
DRIVE
DRIVE
1
Unit
dB min
dB min
dB typ
dB max
dB typ
dB typ
dB typ
dB typ
ns max
ns max
ps typ
dB typ
MHz typ
MHz typ
Bits
Bits min
LSB max
LSB typ
% FSR max
% FSR max
% FSR max
% FSR max
% FSR max
% FSR max
V
V
μA max
pF typ
pF typ
V min/max
μA max
pF typ
V min/max
ppm typ
ppm/°C max
ppm/°C typ
V min
V max
μA max
pF max
REF
range: V
DRIVE
= 2.7 V to 5.25 V;
DD
= 5 V to 16.5 V, V
Test Conditions/Comments
f
fa = 50 kHz, fb = 49 kHz
f
@ −3 dB
@ −0.1 dB
±0.183% FSR typical
±0.015 % FSR typical
±0.183% FSR typical
See Table 8 for min V
RNG bit/RANGE pin = 0
RNG bit/RANGE pin = 1
±4 × V
±2 × V
REF
1,000 hours
Typically 10 nA, V
IN
IN
= 50 kHz sine wave
on unselected channels up to 100 kHz
EN/ DIS
AD7656/AD7657/AD7658
REF
REF
= 1
range when in track
range when in track
SS
IN
= −5 V to −16.5 V;
= 0 V or V
DD
/V
SS
for each range
DRIVE