MAX9943ATT+ Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
The MAX9943ATT+ is a precision voltage-feedback operational amplifier with 125 dB typical CMRR and 240 µV maximum input offset voltage, housed in a compact 6-pin LFCSP (3x3x0.75 mm) package for high-accuracy signal conditioning.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MAX9943ATT+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 125 dB typical CMRR with 105 dB minimum for excellent common-mode noise rejection
- 240 µV maximum input offset voltage enabling precision instrumentation designs
- 90 nA maximum input bias current for compatibility with high-impedance sources
- Voltage-feedback architecture with internal frequency compensation for stability
- Ultra-compact 6-pin LFCSP package measuring 3x3x0.75 mm for dense PCB layouts
- Long 10-year YTEOL confirming sustained active production availability
Applications
The MAX9943ATT+ is suited for precision instrumentation front-ends, bridge amplifier circuits, and medical sensor interfaces where low input offset voltage and high CMRR are critical to measurement accuracy. Its compact LFCSP footprint makes it practical for space-constrained portable diagnostic instruments, data acquisition modules, and industrial process sensors requiring sub-millivolt accuracy.
Specifications
| Manufacturer Package Code | 6-LFCSP-3X3X0.75 |
| Date Of Intro | 2009-03-10 |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.09 µA |
| Common-mode Reject Ratio-Min | 105dB |
| Common-mode Reject Ratio-Nom | 125dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 240 µV |
| JESD-30 Code | S-PDSO-N6 |
| JESD-609 Code | e3 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -20 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC6,.11,37 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.35V/us |
| Supply Current-Max | 0.95mA |
| Supply Voltage Limit-Max | 20V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 2400 |
| Voltage Gain-Min | 31620 |
| Wideband | NO |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What CMRR does the MAX9943ATT+ achieve, and how does it compare to standard-grade op-amps for differential sensor applications?
The MAX9943ATT+ achieves a nominal CMRR of 125 dB with a guaranteed minimum of 105 dB. Compared to standard-grade op-amps that typically specify 70 dB to 90 dB CMRR, this 30 dB to 55 dB improvement significantly reduces rejection requirements on the PCB layout, benefiting strain gauge bridge and thermocouple differential measurement circuits.
How does the 240 µV maximum input offset voltage of MAX9943ATT+ affect accuracy in a precision analog front-end?
With a 240 µV maximum input offset voltage, the MAX9943ATT+ introduces at most 240 µV of DC error referred to input. For a gain-of-100 instrumentation stage, this translates to 24 mV output error, which is acceptable for many medical and industrial measurement applications without the need for external trimming resistors.
What input bias current does MAX9943ATT+ present to a high-impedance sensor source such as a pH electrode?
The MAX9943ATT+ has a maximum average input bias current of 90 nA, which is low enough for most resistive sensors but may introduce offset errors when used with very high-impedance sources like pH electrodes in the gigaohm range. For such applications, a FET-input op-amp with picoamp bias current would be a better match.
What are the package dimensions of MAX9943ATT+ and is it compatible with standard reflow soldering processes?
The MAX9943ATT+ uses a 6-pin LFCSP measuring 3x3x0.75 mm, which is compatible with standard lead-free reflow soldering profiles. The small footprint enables high-density PCB placement in portable instruments and modules where multiple precision amplifier channels must fit in a limited board area.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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