Datasheet > PAC1944

PAC1944

更新时间： 2024-11-17 14:51:07

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
96页	1205K
描述
The PAC1944 is a quad power monitor and energy monitor that reports on bus voltage and sense volta

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PAC1944 数据手册

PAC194X

Single/Multi-Channel Power Monitor

with Accumulator, 9V Full-Scale Range

Features

Applications

• High-Side/Low-Side Current Monitor with One,

Two, Three or Four Channels:

• Embedded Computing

• Networking

- 100 mV Full-Scale Range (FSR) for current

sense voltage

• FPGA Systems

• Low-Voltage/High-Power – AI, GPU

• Industrial

- 16-bit resolution for current measurement

- Programmable FSR: -50 mv to +50 mv

• Linux Applications

- External sense resistor sets the full-scale

current range

• Notebook and Tablet Computing

• Cloud, Linux and Server Computing

• Optical Networking Modules

• Automotive

- Very low input current simplifies routing

• Voltage Monitor with Wide V_BUSRange

- 0V to 9V FSR

- 4.5V programmable V_BUSoption

Computing Platform Support

- 16-bit resolution for voltage measurements

• V_SOURCECan Be Applied before V_DDIs Applied

• Windows^®10 Driver

• Arduino Library

• Python™ Script

• MCC Library

• Real-Time Auto-Calibration of Offset Error for

Voltage and Current

• 1% Power Measurement Accuracy over a Wide

Dynamic Range

Description

• On-Chip Accumulation of 30-bit Power Results for

Energy Measurement

The PAC194X products are one, two, three and

four-channel energy monitors, with bus voltage

monitors and current sense amplifiers that feed

high-resolution ADCs. There are two versions of the

PAC194X: the PAC194X-1 devices are for high-side

current sensing and the PAC194X-2 devices are for

low-side current sensing or floating VBUS applications.

- User programmable sampling rates of 8, 64,

256 and 1024 SPS

- 5120 SPS for a single channel in Burst mode

• 2.7V to 5.5V Supply Operation

- 1.62-5.5V capable I²C/SMBus and digital I/O

- SMBus 3.1 and I²C Fast Mode Plus, 1 Mbps

- High-Speed mode (3.4 Mbps)

Digital circuitry performs power calculations and

energy accumulation. This enables energy monitoring

with integration periods up to one year or longer. Bus

voltage, sense resistor voltage and accumulated pro-

portional power are stored in registers for retrieval by

the system host or embedded controller. The PAC194X

devices have a set of digital comparators that allow the

user to detect over/undervoltage, over/undercurrent

and overpower against user programmed limits for

each channel and generate an ALERT when the

threshold is exceeded.

• SMBus Address – 16 Options, Set with Resistor

• ALERT Features that Can Be Enabled:

- ALERT on conversion complete

- ALERT on Over/Undervoltage and Current or

Overpower conditions

• Coulomb Counting: When Selected, the

Accumulator Accumulates V_SENSEValues.

• 8X Averaging Mode for Single-Shot

Measurements to Reduce Noise and Offset

The sampling rate and energy integration period can be

controlled over SMBus or I²C. Active channel selection,

single-shot measurements and other controls are also

configurable by the SMBus or I²C. The PAC194X

device family uses real-time calibration to minimize the

offset error. No input filters are required for this device.

• Two Independent ALERT/GPIO pins

• AEC-Q100 Qualified (VQFN)

• Available Packages:

- 3 x 3 mm 16-Lead VQFN with wettable flanks

- 2.225 x 2.17 mm 16-Lead WLCSP

 2021-2022 Microchip Technology Inc. and its subsidiaries

DS20006543C-page 1

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与PAC1944相关器件

型号	品牌	获取价格	描述	数据表
PAC1951	MICROCHIP	获取价格	The PAC1951 is a power monitor and energy monitor that reports on bus voltage and sense vo
PAC1952	MICROCHIP	获取价格	The PAC1952 is a dual power monitor and energy monitor that reports on bus voltage and sen
PAC1953	MICROCHIP	获取价格	The PAC1953 is a triple power monitor and energy monitor that reports on bus voltage and s
PAC1954	MICROCHIP	获取价格	The PAC1954 is a quad power monitor and energy monitor that reports on bus voltage and sen
PAC200001078FAC000	VISHAY	获取价格	RESISTOR, WIRE WOUND, 2 W, 1 %, 1.07 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, GREEN
PAC200002007FAC000	VISHAY	获取价格	RESISTOR, WIRE WOUND, 2 W, 1 %, 0.2 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, GREEN
PAC200002009FAC000	VISHAY	获取价格	RESISTOR, WIRE WOUND, 2 W, 1 %, 20 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, GREEN
PAC200002107FAC000	VISHAY	获取价格	RESISTOR, WIRE WOUND, 2 W, 1 %, 0.21 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, GREEN
PAC200002109FAC000	VISHAY	获取价格	RESISTOR, WIRE WOUND, 2 W, 1 %, 21 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, GREEN
PAC200002267FAC000	VISHAY	获取价格	RESISTOR, WIRE WOUND, 2 W, 1 %, 0.226 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, GREEN

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