参数资料
型号: AD7490BRUZ-REEL7
厂商: Analog Devices Inc
文件页数: 25/29页
文件大小: 0K
描述: IC ADC 12BIT 16CHAN 28TSSOP
产品变化通告: IDD Specification Change 17/Jun/2009
标准包装: 1,000
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): 12.5mW
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: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 带卷 (TR)
输入数目和类型: 16 个单端,单极
AD7490
Data Sheet
Rev. D | Page 4 of 28
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
LOGIC INPUTS
Input High Voltage, VINH
0.7 × VDRIVE
V
Input Low Voltage, VINL
0.3 × VDRIVE
V
Input Current, IIN
VIN = 0 V or VDRIVE
±0.01
±1
A
Input Capacitance, CIN+3
10
pF
LOGIC OUTPUTS
Output High Voltage, VOH
ISOURCE = 200 A; VDD = 2.7 V to 5.25 V
VDRIVE 0.2
V
Output Low Voltage, VOL
ISINK = 200 A
0.4
V
Floating State Leakage Current
WEAK/TRI bit set to 0
±10
A
Floating State Output Capacitance3
WEAK/TRI bit set to 0
10
pF
Output Coding
Coding bit set to 1
Straight (Natural) Binary
Coding bit set to 0
Twos Complement
CONVERSION RATE
Conversion Time
16 SCLK cycles, SCLK = 20 MHz
800
ns
Track-and-Hold Acquisition Time2
Sine wave input
300
ns
Full-scale step input
300
ns
Throughput Rate
VDD = 5 V (see the Serial Interface
section)
1
MSPS
POWER REQUIREMENTS
VDD
2.7
5.25
V
VDRIVE
2.7
5.25
V
Digital inputs = 0 V or VDRIVE
Normal Mode (Static)
VDD = 2.7 V to 5.25 V, SCLK on or off
600
A
Normal Mode (Operational)
VDD = 4.75 V to 5.25 V, fSCLK = 20 MHz
2.5
mA
(fS = Maximum Throughput)
VDD = 2.7 V to 3.6 V, fSCLK = 20 MHz
1.8
mA
Auto Standby Mode
fSAMPLE = 500 kSPS
1.55
mA
Static
100
A
Auto Shutdown Mode
fSAMPLE = 250 kSPS
960
A
Static
0.5
A
Full Shutdown Mode
SCLK on or off
0.02
0.5
A
Power Dissipation4
Normal Mode (Operational)
VDD = 5 V, fSCLK = 20 MHz
12.5
mW
VDD = 3 V, fSCLK = 20 MHz
5.4
mW
Auto Standby Mode (Static)
VDD = 5 V
460
W
VDD = 3 V
276
W
Auto Shutdown Mode (Static)
VDD = 5 V
2.5
W
VDD = 3 V
1.5
W
Full Shutdown Mode
VDD = 5 V
2.5
W
VDD = 3 V
1.5
W
1
Specifications apply for fSCLK up to 20 MHz. However, for serial interfacing requirements, see the Timing Specifications section.
2
3
Guaranteed by characterization.
4
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