AD7722–SPECIFICATIONS1 (AV DD
參數(shù)資料
型號(hào): EVAL-AD7722CBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 12/24頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7722CBZ
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 220k
數(shù)據(jù)接口: 串行,并聯(lián)
輸入范圍: ±VREF/2
在以下條件下的電源(標(biāo)準(zhǔn)): 375mW @ 220kSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7722
已供物品: 板,CD
REV. B
–2–
AD7722–SPECIFICATIONS1 (AV
DD = AVDD1 = 5 V
5%; DVDD = 5 V
5%; AGND = AGND1 = DGND = 0 V;
UNI = Logic Low or High; f
CLKIN = 12.5 MHz; fS = 195.3 kSPS; REF2 = 2.5 V; TA = TMIN to TMAX, unless otherwise noted.)
A Version
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DYNAMIC SPECIFICATIONS
2
Bipolar Mode,
UNI = V
INH
VCM = 2.5 V, VIN(+) = VIN(–) =1.25 V p-p,
or VIN(–) = 1.25 V, VIN(+) = 0 V to 2.5 V
Signal-to-(Noise + Distortion)
3
Input Bandwidth 0 kHz–90.625 kHz
86/84.5
90
dB
Input Bandwidth 0 kHz–100 kHz, fCLKIN = 14 MHz
84.5/83
dB
Total Harmonic Distortion
3
Input Bandwidth 0 kHz–90.625 kHz
–90/–88
dB
Input Bandwidth 0 kHz–100 kHz, fCLKIN = 14 MHz
–88/–86
dB
Spurious-Free Dynamic Range
Input Bandwidth 0 kHz–90.625 kHz
–90
dB
Input Bandwidth 0 kHz–100 kHz, fCLKIN = 14 MHz
–88
dB
Unipolar Mode,
UNI = V
INL
VIN(–) = 0 V, VIN(+) = 0 V to 2.5 V
Signal-to-(Noise + Distortion)
3
Input Bandwidth 0 kHz–90.625 kHz
84.5/83
88
dB
Total Harmonic Distortion
3
Input Bandwidth 0 kHz–97.65 kHz
–89/–87
dB
Spurious-Free Dynamic Range
Input Bandwidth 0 kHz–97.65 kHz
–90
dB
Intermodulation Distortion
–93
dB
AC CMRR
VIN(+) = VIN(–) = 2.5 V p-p
VCM = 1.25 V to 3.75 V, 20 kHz
96
dB
Digital Filter Response
Pass-Band Ripple
0 kHz to 90.625 kHz
±0.005
dB
Cutoff Frequency
96.92
kHz
Stop-Band Attenuation
104.6875 kHz to 12.395 MHz
90
dB
ANALOG INPUTS
Full-Scale Input Span
VIN(+) – VIN(–)
Bipolar Mode
UNI = V
INH
–VREF2/2
+VREF2/2
V
Unipolar Mode
UNI = V
INL
0VREF2
V
Absolute Input Voltage
VIN(+) and VIN(–)0
AVDD
V
Input Sampling Capacitance
2pF
Input Sampling Rate
Guaranteed by Design
2
× f
CLKIN
Hz
Differential Input Impedance
1/(4
× 10-9)f
CLKIN
k
CLOCK
CLKIN Mark Space Ratio
45
55
%
REFERENCE
REF1 Output Voltage
2.32
2.47
2.62
V
REF1 Output Voltage Drift
60
ppm/
°C
REF1 Output Impedance
3k
Reference Buffer
Offset Voltage
Offset between REF1 and REF2
±12
mV
Using Internal Reference
REF2 Output Voltage
2.32
2.47
2.62
V
REF2 Output Voltage Drift
60
ppm/
°C
Using External Reference
REF2 Input Impedance
REF1 = AGND
1/(16
× 109)f
CLKIN
k
External Reference Voltage Range
Applied to REF1 or REF2
2.32
2.5
2.62
V
STATIC PERFORMANCE
Resolution
16
Bits
Differential Nonlinearity
Guaranteed Monotonic
±0.5
±1LSB
Integral Nonlinearity
±2LSB
After Calibration
Offset Error
4
±3mV
Gain Error
4, 5
±0.6
% FSR
Without Calibration
Offset Error
±6mV
Gain Error
5
±0.6
% FSR
Offset Error Drift
±1
LSB/
°C
Gain Error Drift
REF2 Is an Ideal Reference, REF1 = AGND
Unipolar Mode
±1
LSB/
°C
Bipolar Mode
±0.5
LSB/
°C
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