参数资料
型号: AD7450ABRMZ
厂商: Analog Devices Inc
文件页数: 27/29页
文件大小: 0K
描述: IC ADC 12BIT DIFF IN 1MSPS 8MSOP
标准包装: 50
位数: 12
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 9.25mW
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: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
输入数目和类型: 1 个差分,单极
配用: EVAL-AD7450CBZ-ND - BOARD EVALUATION FOR AD7450
AD7440/AD7450A
Rev. C | Page 6 of 28
Parameter
Test Conditions/Comments
B Version
Unit
CONVERSION RATE
Conversion Time
888 ns with an 18 MHz SCLK
16
SCLK cycles
Track-and-Hold Acquisition Time2
Sine wave input
200
ns max
Step input
290
ns max
Throughput Rate
1
MSPS max
POWER REQUIREMENTS
VDD
Range: 3 V + 20%/–10%; 5 V ± 5%
2.7/5.25
V min/V max
Normal Mode (Static)
SCLK on or off
0.5
mA typ
Normal Mode (Operational)
VDD = 4.75 V to 5.25 V
1.95
mA max
VDD = 2.7 V to 3.6 V
1.45
mA max
Full Power-Down Mode
SCLK on or off
1
μA max
Power Dissipation
Normal Mode (Operational)
VDD = 5 V, 1.55 mW typ for 100 kSPS9
9.25
mW max
VDD = 3 V, 0.6 mW typ for 100 kSPS9
4
mW max
Full Power-Down
VDD = 5 V, SCLK on or off
5
μW max
VDD = 3 V, SCLK on or off
3
μW max
1 Common-mode voltage. The input signal can be centered on a dc common-mode voltage in the range specified in Figure 28 and Figure 29.
2 See the Terminology section.
3 Analog inputs with slew rates exceeding 27 V/μs (full-scale input sine wave > 3.5 MHz) within the acquisition time can cause the converter to return an
incorrect result.
4 Because the input spans of VIN+ and VIN– are both VREF and are 180° out of phase, the differential voltage is 2 × VREF.
5 The AD7450A is functional with a reference input from 100 mV and for VDD = 5 V; the reference can range up to 3.5 V.
6 The AD7450A is functional with a reference input from 100 mV and for VDD = 3 V; the reference can range up to 2.2 V.
7 Guaranteed by characterization.
8 Measured with a midscale dc input.
9 See the Power vs. Throughput section.
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