AD7657_15 Datasheet, PDF (3/32 Pages) Analog Devices – 250 kSPS, 6-Channel, Simultaneous

Data Sheet
AD7656/AD7657/AD7658
SPECIFICATIONS
AD7656
VREF = 2.5 V internal/external, AVCC = 4.75 V to 5.25 V, DVCC = 4.75 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V;
For ±4 × VREF range: VDD = 10 V to 16.5 V, VSS = −10 V to −16.5 V; For ±2 × VREF range: VDD = 5 V to 16.5 V, VSS = −5 V to −16.5 V;
fSAMPLE = 250 kSPS, TA = TMIN to TMAX, unless otherwise noted.¹
Table 1.
Parameter
DYNAMIC PERFORMANCE
Signal-to-Noise + Distortion (SINAD)²
Signal-to-Noise Ratio (SNR)²
Total Harmonic Distortion (THD)²
Peak Harmonic or Spurious Noise (SFDR)²
Intermodulation Distortion (IMD)²
Second-Order Terms
Third-Order Terms
Aperture Delay
Aperture Delay Matching
Aperture Jitter
Channel-to-Channel Isolation²
Full Power Bandwidth
DC ACCURACY
Resolution
No Missing Codes
Integral Nonlinearity²
Positive Full-Scale Error²
Positive Full-Scale Error Matching²
Bipolar Zero-Scale Error²
Bipolar Zero-Scale Error Matching²
Negative Full-Scale Error²
Negative Full-Scale Error Matching²
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance³
REFERENCE INPUT/OUTPUT
Reference Input Voltage Range
DC Leakage Current
Input Capacitance³
Reference Output Voltage
Long-Term Stability
Reference Temperature Coefficient
B Version¹ Y Version¹ Unit
84
85.5
85
86.5
−90
−92
−100
−100
84
85.5
85
86.5
−90
−92
−100
−100
dB min
dB typ
dB min
dB typ
dB max
dB typ
dB typ
dB typ
−112
−107
10
4
35
−100
12
2
−112
−107
10
4
35
−100
12
2
dB typ
dB typ
ns max
ns max
ps typ
dB typ
MHz typ
MHz typ
16
15
16
±3
±1
±0.75
±0.35
±0.023
±0.038
±0.75
±0.35
16
14
16
±4.5
±1
±0.75
±0.35
±0.023
±0.038
±0.75
±0.35
Bits
Bits min
Bits min
LSB max
LSB typ
% FSR max
% FSR max
% FSR max
% FSR max
% FSR max
% FSR max
±4 × VREF
±2 × VREF
±1
10
14
±4 × VREF
±2 × VREF
±1
10
14
V
V
µA max
pF typ
pF typ
2.5/3
±1
18.5
2.49/2.51
150
25
6
2.5/3
±1
18.5
2.49/2.51
150
25
6
V min/max
µA max
pF typ
V min/max
ppm typ
ppm/°C max
ppm/°C typ
Test Conditions/Comments
fIN = 50 kHz sine wave
VDD/VSS = ±5 V to ±10 V
VDD/VSS = ±12 V to ±16.5 V
fa = 50 kHz, fb = 49 kHz
fIN on unselected channels up to 100 kHz
@ −3 dB
@ −0.1 dB
@ 25°C
±0.22% FSR typical
±0.004% FSR typical
±0.22% FSR typical
See Table 8 for min VDD/VSS for each range
RNG bit/RANGE pin = 0
RNG bit/RANGE pin = 1
±4 × VREF range when in track
±2 × VREF range when in track
REFEN/DIS = 1
1,000 hours
Rev. D | Page 3 of 32