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| 型号： | ADM1025AARQ |
| 厂商： | ON Semiconductor |
| 文件页数： | 13/19页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR SYS/VOLT 5CH 16QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi |
| 标准包装： | 98 |
| 应用： | PC，PDA |
| 接口： | I²C |
| 电源电压： | 3 V ~ 5.5 V |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
ADM1025, ADM1025A
http://onsemi.com
3
Table 3. PIN FUNCTION DESCRIPTIONS
Pin No.
Mnemonic
Description
1
SDA
Digital I/O. Serial bus bidirectional data. Open-drain output.
2
SCL
Digital Input. Serial bus clock.
3
GND
System Ground
4
VCC
Power. Can be powered by 3.3 V standby power if monitoring in low power states is required. This
pin also serves as the analog input to monitor VCC.
5
VID0
Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0VID3
Status Register. It has an on-chip 100 kW pull-up resistor (ADM1025 only).
6
VID1
Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0VID3
Status Register. It has an on-chip 100 kW pull-up resistor (ADM1025 only).
7
VID2
Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0VID3
Status Register. It has an on-chip 100 kW pull-up resistor (ADM1025 only).
8
VID3
Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0VID3
Status Register. It has an on-chip 100 kW pull-up resistor (ADM1025 only).
9
D/NTI
Analog/Digital Input. Connected to cathode of external temperature sensing diode. If held high at
power-up, it initiates NAND tree test mode.
10
D+
Analog Input. Connected to anode of external temperature sensing diode.
11
12VIN/VID4
Programmable Analog/Digital Input. Defaults to 12 VIN analog input at power-up but may be
programmed as VID4 Core Voltage ID readout from the processor. This value is read into the
VID4 Status Register. In analog 12 VIN mode, it has an on-chip voltage attenuator. In VID4 mode,
it has an on-chip 300 kW pull-up resistor.
12
5VIN
Analog Input. Monitors 5 V supply.
13
3.3VIN
Analog Input. Monitors 3.3 V supply.
14
2.5VIN
Analog Input. Monitors 2.5 V supply.
15
VCCPIN
Analog Input. Monitors processor core voltage (0 V to 3.0 V).
16
ADD/RST/INT/NTO
Programmable Digital I/O. The lowest order programmable bit of the SMBus Address, sampled on
SMB activity as a three-state input. Can also be configured to give a minimum 20 ms low reset
output pulse. Alternatively, it can be programmed as an interrupt output for temperature/voltage
interrupts. Functions as the output of the NAND tree in NAND tree test mode.
Table 4. ELECTRICAL CHARACTERISTICS
(TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted)
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
POWER SUPPLY
3.0
3.3
5.5
V
Interface Inactive, ADC Active
Standby Mode
1.4
32
2.5
500
mA
TEMPERATURE-TO-DIGITAL CONVERTER
Internal Sensor Accuracy
3
C
Resolution
1
C
External Diode Sensor Accuracy
60C<TA < 100C; VCC = 3.3 V
5
3
C
Resolution
1
C
Remote Sensor Source Current
High Level
Low Level
180
11
mA
ANALOG-TO-DIGITAL CONVERTER (INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error, TUE (Note 3)
2
%
Differential Nonlinearity, DNL
1
LSB
Power Supply Sensitivity
1
%/V
Conversion Time (Analog Input or Internal
Temperature) (Note 4)
11.6
ms
Conversion Time (External Temperature) (Note 4)
34.8
ms
Input Resistance (2.5 V, 3.3 V, 5 V, 12 V, VCCPIN)
80
140
250
kW
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