AVDD,
參數資料
型號: AD7858ARZ
廠商: Analog Devices Inc
文件頁數: 23/32頁
文件大?。?/td> 0K
描述: IC ADC 12BIT 8CH SRL 24-SOIC
標準包裝: 31
位數: 12
采樣率(每秒): 200k
數據接口: 8051,QSPI?,串行,SPI? µP
轉換器數目: 2
功率耗散(最大): 33mW
電壓電源: 模擬和數字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
供應商設備封裝: 24-SOIC W
包裝: 管件
輸入數目和類型: 8 個單端,單極;4 個偽差分,單極
產品目錄頁面: 779 (CN2011-ZH PDF)
Parameter
A Version
1
B Version
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
AVDD, DVDD
+3.0/+5.5
V min/max
IDD
Normal Mode
5
6 (1.9)
mA max
AVDD = DVDD = 4.5 V to 5.5 V. Typically 4.5 mA (1.5)
5.5 (1.9)
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
33 (10.5)
mW max
VDD = 5.5 V. Typically 25 mW (8); SLEEP = VDD
20 (6.85)
mW max
VDD = 3.6 V. Typically 15 mW (5.4); SLEEP = VDD
Sleep Mode Power Dissipation
With External Clock On
55
W typ
VDD = 5.5 V. SLEEP = 0 V
36
W typ
VDD = 3.6 V. SLEEP = 0 V
With External Clock Off
27.5
W max
VDD = 5.5 V. Typically 5.5
W; SLEEP = 0 V
18
W max
VDD = 3.6 V. Typically 3.6
W; SLEEP = 0 V
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
+1.025
× VREF/–0.975 × VREF
V max/min
Allowable Full-Scale Voltage Span for Calibration
NOTES
1Temperature ranges as follows: A, B Versions: –40
°C to +85°C. For L Versions, A and B Versions fCLKIN = 1 MHz over –40°C to +85°C temperature range,
B Version fCLKIN = 1.8 MHz over 0
°C to +70°C temperature range.
2Specifications apply after calibration.
3SNR calculation includes distortion and noise components.
4Sample tested @ +25
°C to ensure compliance.
5All digital inputs @ DGND except for
CONVST, SLEEP, CAL, and SYNC @ DV
DD. No load on the digital outputs. Analog inputs @ AGND.
6CLKIN @ DGND when external clock off. All digital inputs @ DGND except for
CONVST, SLEEP, CAL, and SYNC @ 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 AD7858/AD7858L 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). This is explained in more detail in the Calibration sect ion of the data sheet.
Specifications subject to change without notice.
AD7858/AD7858L
REV. B
–3–
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