参数资料
型号: AD7814ARMZ
厂商: Analog Devices Inc
文件页数: 2/8页
文件大小: 123K
描述: IC DGTL TEMP SENSOR 10BIT 8-MSOP
标准包装: 50
功能: 温度监控系统(传感器)
传感器类型: 内部
感应温度: -55°C ~ 125°C
精确度: ±2°C
拓扑: ADC,寄存器库
输出类型: MICROWIRE?,QSPI?,SPI?
输出警报:
输出风扇:
电源电压: 2.7 V ~ 5.5 V
工作温度: -55°C ~ 125°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
产品目录页面: 798 (CN2011-ZH PDF)
REV. E
2
AD7814SPECIFICATIONS
1
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
Accuracy
?.0
T
A
 = 0癈 to 85癈. V
DD
 = 3 V to 5.5 V
2
?.5
T
A
 = 40癈 to 0癈. V
DD
 = 3 V to 5.5 V
2
?.0
?.5
T
A
 = 55癈 to +125癈. V
DD
 = 3 V to 5.5 V
Resolution
10
Bits
Update Rate, t
R
400
Temperature Conversion Time
25
SUPPLIES
Supply Voltage
2.7
5.5
V
For Specified Performance
Supply Current
Normal Mode
250
400
Shutdown Mode (V
DD
 = 5 V)
1.23
3
Shutdown Mode (V
DD
 = 3 V)
0.43
1
Power Dissipation
80
V
DD
 = 3 V. Using Normal Mode
Power Dissipation
V
DD
 = 3 V. Using Shutdown Mode
1 sps
3.7
10 sps
3.9
100 sps
5.8
DIGITAL INPUT
3
Input High Voltage, V
IH
2.4
V
Input Low Voltage, V
IL
0.8
V
Input Current, I
IN
?
V
IN
 = 0 V to V
DD
Input Capacitance, C
IN
10
pF
All Digital Inputs
DIGITAL OUTPUT
3
Output High Voltage, V
OH
V
DD
  0.3 V
I
SOURCE
= I
SINK
= 200 礎
Output Low Voltage, V
OL
0.4
V
I
OL
 = 200 礎
Output Capacitance, C
OUT
50
pF
NOTES
1
All specifications apply for 55癈 to +125癈 unless otherwise stated.
2
For V
DD
 = 2.7 V to 3 V and T
A
 = 40癈 to +85癈, the typical temperature error is ?癈.
3
Guaranteed by design and characterization, not production tested.
Specifications subject to change without notice.
TIMING CHARACTERISTICS
1, 2, 3
Parameter
Limit
Unit
Comments
t
1
0
ns min
CS to SCLK Setup Time
t
2
50
ns min
SCLK High Pulse Width
t
3
50
ns min
SCLK Low Pulse Width
t
4
4
35
ns max
Data Access Time After SCLK Falling Edge
t
5
20
ns min
Data Setup Time Prior to SCLK Rising Edge
t
6
0
ns min
Data Hold Time After SCLK Rising Edge
t
7
0
ns min
CS to SCLK Hold Time
t
8
4
40
ns max
CS to DOUT High Impedance
NOTES
1
Guaranteed by design and characterization, not production tested.
2
All input signals are specified with tr = tf = 5 ns (10% to 90% of V
DD
) and timed from a voltage level of 1.6 V.
3
See Figure 2.
4
Measured with the load circuit of Figure 1.
Specifications subject to change without notice.
(T
A
 = T
MIN
 to T
MAX
, V
DD
 = 2.7 V to 5.5 V, unless otherwise noted.)
(T
A
 = T
MIN
 to T
MAX
, V
DD
 = 2.7 V to 5.5 V, unless otherwise noted.)
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