参数资料
型号: AD7938BCPZ-6
厂商: Analog Devices Inc
文件页数: 27/32页
文件大小: 0K
描述: IC ADC 12BIT 8CH 625KSPS 32LFCSP
标准包装: 1
位数: 12
采样率(每秒): 625k
数据接口: 并联
转换器数目: 1
功率耗散(最大): 7.5mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ
包装: 托盘
输入数目和类型: 8 个单端,单极;4 个差分,单极;4 个伪差分,单极;7 伪差分,单极
配用: EVAL-AD7938CBZ-ND - EVAL BOARD FOR AD7938
AD7938-6
Data Sheet
Rev. C | Page 4 of 32
Parameter
Value1
Unit
Test Conditions/Comments
DC Leakage Current4
±1
μA max
Input Capacitance
45
pF typ
When in track
10
pF typ
When in hold
REFERENCE INPUT/OUTPUT
VREF Input Voltage5
2.5
V
±1% for specified performance
DC Leakage Current
±1
μA max
VREFOUT Output Voltage
2.5
V
±0.2% max @ 25°C
VREFOUT Temperature Coefficient
25
ppm/°C max
5
ppm/°C typ
VREF Noise
10
μV typ
0.1 Hz to 10 Hz bandwidth
130
μV typ
0.1 Hz to 1 MHz bandwidth
VREF Output Impedance
10
Ω typ
VREF Input Capacitance
15
pF typ
When in track
25
pF typ
When in hold
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.8
V max
Input Current, IIN
±5
μA max
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance, CIN4
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
2.4
V min
ISOURCE = 200 μA
Output Low Voltage, VOL
0.4
V max
ISINK = 200 μA
Floating-State Leakage Current
±3
μA max
Floating-State Output Capacitance4
10
pF max
Output Coding
Straight (Natural) Binary
CODING bit = 0
Twos Complement
CODING bit = 1
CONVERSION RATE
Conversion Time
t2 + 13 tCLKIN
ns
Track-and-Hold Acquisition Time
125
ns max
Full-scale step input
80
ns typ
Sine wave input
Throughput Rate
625
kSPS max
POWER REQUIREMENTS
VDD
2.7/5.25
V min/max
VDRIVE
2.7/5.25
V min/max
Digital inputs = 0 V or VDRIVE
Normal Mode (Static)
0.8
mA typ
VDD = 2.7 V to 5.25 V, SCLK on or off
Normal Mode (Operational)
1.5
mA max
VDD = 4.75 V to 5.25 V
1.2
mA max
VDD = 2.7 V to 3.6 V
Autostandby Mode
0.3
mA typ
fSAMPLE = 100 kSPS, VDD = 5 V
160
μA typ
Static
Full/Autoshutdown Mode (Static)
2
μA max
SCLK on or off
Power Dissipation
Normal Mode (Operational)
7.5
mW max
VDD = 5 V
3.6
mW max
VDD = 3 V
Autostandby Mode (Static)
800
μW typ
VDD = 5 V
480
μW typ
VDD = 3 V
Full/Autoshutdown Mode (Static)
10
μW max
VDD = 5 V
6
μW max
VDD = 3 V
1 Temperature range is 40°C to +85°C.
2 See the Terminology section.
3 For full common-mode range, see Figure 25 and Figure 26.
4 Sample tested during initial release to ensure compliance.
5 This device is operational with an external reference in the range of 0.1 V to VDD. See the Reference section for more information.
6 Measured with a midscale dc analog input.
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