AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF
參數資料
型號: EVAL-AD7985EBZ
廠商: Analog Devices Inc
文件頁數: 22/28頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD7985
標準包裝: 1
系列: PulSAR®
ADC 的數量: 1
位數: 16
采樣率(每秒): 2.5M
數據接口: SPI?、QSPI?、MICROWIRE? 和 DSP
輸入范圍: 0 ~ 5 V
在以下條件下的電源(標準): 15.5mW @ 2.5MSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7985
已供物品:
AD7985
Rev. A | Page 3 of 28
SPECIFICATIONS
AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF = 4.096 V, TA = 40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
(IN+) (IN)
0
VREF
V
Absolute Input Voltage
IN+
0.1
VREF + 0.1
V
IN
0.1
+0.1
V
Leakage Current at 25°C
Acquisition phase
250
nA
Input Impedance
See the Analog Inputs section
ACCURACY
No Missing Codes
16
Bits
Differential Nonlinearity Error, DNL
0.99
±0.50
+0.99
LSB1
Integral Nonlinearity Error, INL
1.50
±0.7
+1.50
LSB1
Transition Noise
0.8
LSB1
Gain Error, TMIN to TMAX2
15
±2
+15
LSB1
Gain Error Temperature Drift
±0.8
ppm/°C
Zero Error, TMIN to TMAX2
0.99
±0.08
+0.99
mV
Zero Temperature Drift
0.55
ppm/°C
Power Supply Sensitivity
AVDD = 2.5 V ± 5%
90
THROUGHPUT
Conversion Rate
0
2.5
MSPS
Transient Response
Full-scale step
100
ns
AC ACCURACY
Dynamic Range
VREF = 4.096 V, internal reference
87.5
89
VREF = 5.0 V, external reference
89.0
90
Signal-to-Noise Ratio, SNR
fIN = 20 kHz, VREF = 4.096 V, internal
reference
87.0
88.5
fIN = 20 kHz, VREF = 5.0 V, external
reference
89.0
90.0
Spurious-Free Dynamic Range, SFDR
fIN = 20 kHz
103
Total Harmonic Distortion4, THD
fIN = 20 kHz, VREF = 4.096 V, internal
reference
100
Signal-to-Noise-and-Distortion Ratio,
SINAD
fIN = 20 kHz, VREF = 4.096 V
90.5
SAMPLING DYNAMICS
3 dB Input Bandwidth
19
MHz
Aperture Delay
0.7
ns
1
LSB means least significant bit. With the ±4.096 V input range, one LSB is 62.5 V.
2
See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
3
All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
4
Tested fully in production at fIN = 1 kHz.
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