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MAX9643

60V High-Speed Precision Current-Sense Amplifier

Industry's Fastest Current-Sense Amplifier Also Offers Outstanding 50µV V_OS Precision

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX9643 is a high-speed 60V precision unidirectional current-sense amplifier ideal for a wide variety of power-supply control applications. Its high signal bandwidth allows its use within DC-DC switching converter power-supply control loops with minimal phase delay.

The IC also features 50µV (max) precision input offset voltage, allowing small sense resistors to be used in applications where efficiency is important and when wide dynamic-range current measurement is needed.

High DC CMRR and AC CMRR make it easy to use in a wide variety of aggressive environments. The device is available in fixed gains of 2.5V/V and 10V/V. It is also available in a small, 8-pin TDFN (2mm x 3mm) package and is rated over the -40°C to +125°C temperature range.

Data Sheet

Download	Rev 0	(PDF, 1.9MB)
E-Mail

An evaluation kit is available: MAX9643EVKIT

Key Features

Supports High-Voltage Applications
- Wide Input V_CM = -1.5V to +60V
Delivers High-Speed Operation
- 15MHz Bandwidth
Increases System Accuracy
- Precision V_OS = 50µV (max)
-40°C to +125°C Specified Temperature Range

Applications/Uses

Automotive Engine Control
GSM Base Station Power Supply
H-Bridge Motor Control
High-Brightness LED Control
Industrial and Automotive Power Supplies

Key Specifications:

Current Sense Amplifiers

Part Number

CMVR
(V)

V_CC
(V)

I_CC
(µA)

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

min

max

min

max

typ

recomm.

max

@ -3dB

See Notes

MAX9643

-1.5

2.7

1000

100

300

400

2.5V/V

10V/V

0.5

10000

-40 to +125

TDFN-EP/8

$1.95 @1k

See All Current Sense Amplifiers (36)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

Reliability Report:	MAX9643.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9643TATA+			Active	TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9643TATA+T			Active	TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9643UATA+			Active	TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9643UATA+T			Active	TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Evaluation Kits

MAX9643EVKIT

Evaluation Kit for the MAX9643

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