参数资料
型号: AD7854LARS
厂商: Analog Devices Inc
文件页数: 22/28页
文件大小: 0K
描述: IC ADC 12BIT PARALLEL LP 28-SSOP
产品变化通告: Product Discontinuance 27/Oct/2011
标准包装: 47
位数: 12
采样率(每秒): 100k
数据接口: 并联
转换器数目: 2
功率耗散(最大): 30mW
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: 28-SSOP(0.209",5.30mm 宽)
供应商设备封装: 28-SSOP
包装: 管件
输入数目和类型: 1 个伪差分,单极;1 个伪差分,双极
Parameter
A Version1
B Version1
S Version1
Units
Test Conditions/Comments
POWER REQUIREMENTS
AVDD, DVDD
+3.0/+5.5
V min/max
IDD
Normal Mode
5
5.5 (1.8)
6 (1.8)
mA max
AVDD = DVDD = 4.5 V to 5.5 V. Typically 4.5 mA
(1.5 mA);
5.5 (1.8)
6 (1.8)
mA max
AVDD = DVDD = 3.0 V to 3.6 V. Typically 4.0 mA
(1.5 mA).
Sleep Mode
6
With External Clock On
10
A typ
Full power-down. Power management bits in control
register set as PMGT1 = 1, PMGT0 = 0.
400
A typ
Partial power-down. Power management bits in
control register set as PMGT1 = 1, PMGT0 = 1.
With External Clock Off
5
A max
Typically 1
A. Full power-down. Power management
bits in control register set as PMGT1 = 1,
PMGT0 = 0.
200
A typ
Partial power-down. Power management bits in
control register set as PMGT1 = 1, PMGT0 = 1.
Normal Mode Power Dissipation
30 (10)
mW max
VDD = 5.5 V: Typically 25 mW (8)
20 (6.5)
mW max
VDD = 3.6 V: Typically 15 mW (5.4)
Sleep Mode Power Dissipation
With External Clock On
55
W typ
VDD = 5.5 V
36
W typ
VDD = 3.6 V
With External Clock Off
27.5
W max
VDD = 5.5 V: Typically 5.5
W
18
W max
VDD = 3.6 V: Typically 3.6
W
SYSTEM CALIBRATION
Offset Calibration Span
7
+0.05
× V
REF/–0.05
× V
REF
V max/min
Allowable Offset Voltage Span for Calibration
Gain Calibration Span
7
+0.025
× VREF/–0.025 × VREF
V max/min
Allowable Full-Scale Voltage Span for Calibration
NOTES
1Temperature ranges as follows: A, B Versions, –40
°C to +85°C; S Version, –55°C to +125°C.
2Specifications apply after calibration.
3Not production tested. Guaranteed by characterization at initial product release.
4Sample tested @ +25
°C to ensure compliance.
5All digital inputs @ DGND except for
CONVST @ DV
DD. No load on the digital outputs. Analog inputs @ AGND.
6CLKIN @ DGND when external clock off. All digital inputs @ DGND except for
CONVST @ DV
DD. No load on the digital outputs. Analog inputs @ AGND.
7The offset and gain calibration spans are defined as the range of offset and gain errors that the AD7854/AD7854L can calibrate. Note also that these are voltage spans
and are not absolute voltages (i.e., the allowable system offset voltage presented at AIN(+) for the system offset error to be adjusted out will be AIN(–)
± 0.05 × V
REF,
and the allowable system full-scale voltage applied between AIN(+) and AIN(–) for the system full-scale voltage error to be adjusted out will be VREF
± 0.025 × V
REF
(unipolar mode) and VREF/2
± 0.025 × V
REF (bipolar mode)). This is explained in more detail in the calibration section of the data sheet.
Specifications subject to change without notice.
REV. B
–3–
AD7854/AD7854L
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