MAX44285：Dual-Channel, High-Precision, High-Voltage, Current-Sense Amplifier

Unique Combination of High-Accuracy and High-Voltage Operation at 76V

The MAX44285 dual-channel high-side current-sense amplifier has precision accuracy specifications of VOS less than 10µV (max) and gain error less than 0.1% (max). The MAX44285 features an input common-mode voltage range from 2.7V to 76V with 80kHz of small-signal bandwidth, which makes it ideal for interfacing with a SAR ADC for multichannel multiplexed data acquisition systems. The MAX44285 operates over the -40°C to +125°C temperature range. The MAX44285 is offered in 8-bump WLP and 8-pin µMAX® packages.

Key Features

2.7V to 76V Input Common Mode
Low 12µV (max) Input Offset Voltage
Low 0.1% (max) Gain Error
Gain Options
- G = 12.5V/V (MAX44285L)
- G = 20V/V (MAX44285T)
- G = 50V/V (MAX44285F)
- G = 100V/V (MAX44285H)
1mm x 2mm 8-Bump WLP and 8-Pin µMAX Packages

MAX44285: Typical Operating Circuit

Applications/Uses

Base Stations and Communication Equipment
Industrial Control and Automation
Power Management Systems
Server Backplanes

DataSheet

title	Download file
MAX44285 Data Sheet	MAX44285.pdf

Parametrics

Part Number	Output Format	CMVR (V)	CMVR (V)	V_CC (V)	V_CC (V)	Bi-Dir. Curr. Sense	V_{SENSE_FS} (mV)	V_OS @25°C (µV)	Gain	Gain Accuracy @25°C (%)	BW (kHz)	Comp- arators	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Output Format	min	max	min	max	Bi-Dir. Curr. Sense	recomm.	max	Gain	max	@ -3dB	Comp- arators	Oper. Temp. (°C)	Package/Pins	See Notes
MAX44285	Voltage	2.7	76	2.7	5.5	No	125	10	20 V/V	0.1	80	0	-40 to +125	WLP/8 uMAX/8	$2.20 @1k

Design kits & evaluation modules

MAX44285EVKIT

Quality and Environmental Data

MAX44285.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX44285FAUA+	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285FAUA+T	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285FAWA+	Active	MAX44285FAWA+T	WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285FAWA+T	Active		WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285HAUA+	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285HAUA+T	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285HAWA+	Active		WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285HAWA+T	Active		WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285LAUA+	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285LAUA+T	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX44285LAWA+	Active	MAX44285LAWA+T	WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285LAWA+T	Active		WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285TAUA+	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285TAUA+T	Active		uMAX,;8 pin;UMAX;	-40°C to +125°C	Lead Free
MAX44285TAWA+	Active	MAX44285TAWA+T	WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free
MAX44285TAWA+T	Active		WLP,;8 pin;WLP;	-40°C to +125°C	Lead Free

MAX44285.pdf MAX44285