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ADM1025ARQZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
ADM1025/ADM1025A
Preliminary Technical Data
Rev. P5 | Page 4 of 21| www.onsemi.com
Parameter Min Typ Max Unit Test Conditions/Comments
SERIAL BUS TIMING
Clock Frequency, f
SCLK
400 kHz See Figure 2
Glitch Immunity, t
SW
50 ns See Figure 2
Bus Free Time, t
BUF
1.3 μs See Figure 2
Start Setup Time, t
SU:STA
600 ns See Figure 2
Start Hold Time, t
HD:STA
600 ns See Figure 2
Stop Condition Setup Time, t
SU:STO
600 ns See Figure 2
SCL Low Time, t
LOW
1.3 μs See Figure 2
SCL High Time, t
HIGH
0.6 μs See Figure 2
SCL, SDA Rise Time, t
R
300 ns See Figure 2
SCL, SDA Fall Time, t
F
300 ns See Figure 2
Data Setup Time, t
SU:DAT
100 ns See Figure 2
Data Hold Time, t
HD:DAT
300 ns See Figure 2
1
All voltages are measured with respect to GND, unless otherwise specified.
2
Typicals are at T
A
= 25°C and represent most likely parametric norm. Shutdown current typ is measured with V
CC
= 3.3 V.
3
TUE (Total Unadjusted Error) includes Offset, Gain, and Linearity errors of the ADC, multiplexer, and on-chip input attenuators, including an external series input
protection resistor value between zero and 1 kΩ.
4
Total monitoring cycle time is nominally 114.4 ms. Monitoring Cycle consists of 6 Voltage + 1 Internal Temperature + 1 External Temperature readings.
5
ADD is a three-state input that may be pulled high, low, or left open-circuit.
6
Timing specifications are tested at logic levels of V
IL
= 0.8 V for a falling edge and V
IH
= 2.2 V for a rising edge.
Preliminary Technical Data
ADM1025/ADM1025A
Rev. P5 | Page 5 of 21| www.onsemi.com
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Rating
Positive Supply Voltage (V
CC
) 6.5 V
Voltage on 12 V V
IN
Pin 20 V
Voltage on Any Input or Output Pin −0.3 V to +6.5 V
Input Current at Any Pin ±5 mA
Package Input Current ±20 mA
Maximum Junction Temperature (T
J
max) 150°C
Storage Temperature Range –65°C to +150°C
Lead Temperature, Soldering
Vapor Phase 60 sec 215°C
Infrared 15 sec 200°C
ESD Rating All Pins 2000 V
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL CHARACTERISTICS
16-Lead QSOP Package:
θ
JA
= 105°C/W
θ
JC
= 39°C/W
ESD CAUTION
Figure 2. Diagram for Serial Bus Timing
ADM1025/ADM1025A
Preliminary Technical Data
Rev. P5 | Page 6 of 21| www.onsemi.com
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 3.Pin Configuration
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 V
CC
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 V
CC
.
5 VID0 Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0−VID3 Status
Register. It has an on-chip 100 kΩ pull-up resistor (ADM1025 only).
6 VID1 Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0−VID3 Status
Register. It has an on-chip 100 kΩ pull-up resistor (ADM1025 only).
7 VID2 Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0−VID3 Status
Register. It has an on-chip 100 kΩ pull-up resistor (ADM1025 only).
8 VID3 Digital Input. Core voltage ID readouts from the processor. This value is read into the VID0−VID3 Status
Register. It has an on-chip 100 kΩ 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 12V
IN
/VID4 Programmable Analog/Digital Input. Defaults to 12 V
IN
analog input at power-up but may be pro-grammed as
VID4 Core Voltage ID readout from the processor. This value is read into the VID4 Status Register. In analog 12
V
IN
mode, it has an on-chip voltage attenuator. In VID4 mode, it has an on-chip 300 kΩ pull-up resistor.
12 5V
IN
Analog Input. Monitors 5 V supply.
13 3.3V
IN
Analog Input. Monitors 3.3 V supply.
14 2.5V
IN
Analog Input. Monitors 2.5 V supply.
15 V
CCPIN
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.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

ADM1025ARQZ

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Buy ADM1025ARQZ
Manufacturer:
ON Semiconductor
Description:
IC MONITOR SYS/VOLT 5CH 16QSOP
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