参数资料
型号: AD7985BCPZ-RL7
厂商: Analog Devices Inc
文件页数: 23/28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 4 of 28
Table 3.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
INTERNAL REFERENCE
PDREF is low
Output Voltage
TA = 25°C
4.081
4.096
4.111
V
Temperature Drift
40°C to +85°C
±10
ppm/°C
Line Regulation
AVDD = 2.5 V ± 5%
±50
ppm/V
Turn-On Settling Time
CREF = 10 μF, CREFIN = 0.1 μF
40
ms
REFIN Output Voltage
REFIN at 25°C
1.2
V
REFIN Output Resistance
6
k
EXTERNAL REFERENCE
PDREF is high, REFIN is low
Voltage Range
2.4
5.1
V
Current Drain
500
A
REFERENCE BUFFER
REFIN Input Voltage Range
1.2
V
REFIN Input Current
160
A
DIGITAL INPUTS
Logic Levels
VIL
0.3
0.1 × VIO
V
VIH
0.9 × VIO
VIO + 0.3
V
IIL
1
+1
A
IIH
1
+1
A
DIGITAL OUTPUTS
Data Format
Serial 16 bits, straight binary
Pipeline Delay
Conversion results available immediately
after completed conversion
VOL
ISINK = +500 A
0.4
V
VOH
ISOURCE = 500 A
VIO 0.3
V
POWER SUPPLIES
AVDD, DVDD
2.375
2.5
2.625
V
BVDD
4.75
5.0
5.25
V
VIO
Specified performance
1.8
2.5
2.7
V
Standby Current1, 2
AVDD = DVDD = VIO = 2.5 V
1.0
A
Power Dissipation
With Internal Reference
2.5 MSPS throughput
28
33
mW
2.0 MSPS throughput
25
30
mW
With External Reference
2.5 MSPS throughput
15.5
17
mW
2.0 MSPS throughput
12
13
mW
TEMPERATURE RANGE3
Specified Performance
TMIN to TMAX
40
+85
°C
1
With all digital inputs forced to VIO or GND as required.
2
During acquisition phase.
3
Contact an Analog Devices, Inc., sales representative for the extended temperature range.
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