参数资料
型号: AD7985BCPZ-RL7
厂商: Analog Devices Inc
文件页数: 22/28页
文件大小: 0K
描述: IC ADC 16B 2.5MSPS PULSR 20LFCSP
标准包装: 1,500
系列: PulSAR®
位数: 16
采样率(每秒): 2.5M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 33mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘,CSP
供应商设备封装: 20-LFCSP-VQ
包装: 带卷 (TR)
输入数目和类型: 1 个伪差分,单极
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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