AD7656 데이터 시트보기 (PDF) - Analog Devices
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AD7656 Datasheet PDF : 32 Pages
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Data Sheet
AD7656/AD7657/AD7658
AD7657
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 2.
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
LOGIC INPUTS
Input High Voltage (VINH)
Input Low Voltage (VINL)
Input Current (IIN)
Input Capacitance (CIN)3
B Version1 Y Version1 Unit
81.5
82.5
83.5
−90
−92
−100
81.5
82.5
83.5
−89
−92
−100
dB min
dB min
dB typ
dB max
dB typ
dB typ
−109
−104
10
4
35
−100
12
2
−109
−104
10
4
35
−100
12
2
dB typ
dB typ
ns max
ns max
ps typ
dB typ
MHz typ
MHz typ
14
14
±1.5
±1
±0.75
±0.3
±0.0305
±0.0427
±0.75
±0.3
14
14
±1.5
±1
±0.75
±0.3
±0.0305
±0.0427
±0.75
±0.3
Bits
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
0.7 × VDRIVE
0.3 × VDRIVE
±1
10
0.7 × VDRIVE
0.3 × VDRIVE
±1
10
V min
V max
µA max
pF max
Test Conditions/Comments
fIN = 50 kHz sine wave
fa = 50 kHz, fb = 49 kHz
fIN on unselected channels up to 100 kHz
@ −3 dB
@ −0.1 dB
±0.183% FSR typical
±0.015 % FSR typical
±0.183% 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
Typically 10 nA, VIN = 0 V or VDRIVE
Rev. D | Page 5 of 32
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