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MAX9943, MAX9944
High-Voltage, Precision, Low-Power Op Amps
Excellent Combination of Low Power and Precision in a Small Package
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Status
Active: In Production.
Description
The MAX9943/MAX9944 is a family of high-voltage amplifiers that offers precision, low drift, and low power consumption.
The MAX9943 (single) and MAX9944 (dual) op amps offer 2.4MHz of gain-bandwidth product with only 550µA of supply current per amplifier.
The MAX9943/MAX9944 family has a wide power supply range operating from ±3V to ±19V dual supplies or a 6V to 38V single supply.
The MAX9943/MAX9944 are ideal for sensor signal conditioning, high-performance industrial instrumentation and loop-powered systems (e.g., 4mA–20mA transmitters).
The MAX9943 is offered in a space-saving 6-pin TDFN or 8-pin µMAX® package. The MAX9944 is offered in an 8-pin SO or an 8-pin TDFN package. These devices are specified over the -40°C to +125°C automotive temperature range.
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Data Sheet
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An evaluation kit is available: MAX9943EVKIT
Key Features
- Wide 6V to 38V Supply Range
- Low 100µV (max) Input Offset Voltage
- Low 0.4µV/°C Offset Drift
- Unity Gain Stable with 1nF Load Capacitance
- 2.4MHz Gain-Bandwidth Product
- 550µA Supply Current
- 20mA Output Current
- Rail-to-Rail Output
- Package Options
- 3mm x 5mm, 8-Pin µMAX or 3mm x 3mm, 6-Pin TDFN Packages (Single)
- 5mm x 6mm, 8-Pin SO or 3mm x 3mm, 8-Pin TDFN Packages (Dual)
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Applications/Uses
- Amplifiers
- Automatic Test Equipment (ATE)
- Displays: Industrial, Front Panel, and Instrumentation
- High-Performance ADC/DAC Input/Output
- High-Voltage ATE
- Industrial Instrumentation
- Industrial: Process Measurement and Control
- Loop-Powered Systems
- Panel Meters
- Power Meters
- Programmable Logic Controllers (PLCs)
- Sensor Interfaces
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Key Specifications:
| Operational Amplifiers |
| Part Number |
Amps. |
Rail to Rail |
AVCL |
VSUPPLY (Total)
(V) |
VSUPPLY (Total)
(V) |
ICC per Amp.
(µA) |
ICC per Amp.
(µA) |
VOS
(µV) |
CMRR @DC
(dB) |
PSRR @DC
(dB) |
Input IBIAS
(nA) |
Unity Gain BW
(MHz) |
Slew Rate
(V/µs) |
en
(nV/√Hz) |
in
(pA/√Hz) |
Low Pwr. Shutdn |
Package/Pins |
Budgetary Price |
| min |
min |
max |
typ |
max |
max |
typ |
typ |
max |
typ |
typ |
See Notes |
| MAX9944 |
2 |
Output Only |
1 |
6 |
38 |
550 |
950 |
100 |
125 |
130 |
90 |
- |
0.35 |
17.6 |
0.18 |
No |
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$1.39 @1k |
| MAX9943 |
1 |
2.4 |
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$0.83 @1k |
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See All Operational Amplifiers (160)
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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.
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Diagram
Typical ±20mA Current-Source in Loop-Powered Systems
More Information
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Information Index
Document Ref.: 19-4433
Rev 3;
2011-05-02
This page last modified: 2011-05-02
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