MAX4291, MAX4292, MAX4294 Ultra-Small, +1.8V, µPower, Rail-to-Rail I/O Op Amps

Description

The MAX4291/MAX4292/MAX4294 family of micropower operational amplifiers operates from a 1.8V to 5.5V single supply or ±0.9V to ±2.75V dual supplies and has Rail-to-Rail input/output capabilities. These amplifiers provide a 500kHz gain-bandwidth product and 120dB open-loop voltage gain while using only 100µA of supply current per amplifier. The combination of low input offset voltage (±200µV) and high open-loop gain makes them ideal for low-power/low-voltage, high-precision portable applications.

The MAX4291/MAX4292/MAX4294 have an input common-mode range that extends to each supply rail, and their outputs swing to within 46mV of the rails with a 2kΩ load. Although the minimum operating voltage is specified at 1.8V, these devices typically operate down to 1.5V. The combination of ultra-low-voltage operation, rail-to-rail inputs/output, and low-power consumption makes these devices ideal for any portable/two-cell battery-powered system.

The single MAX4291 is offered in an ultra-small 5-pin SC70 package. The dual MAX4292 is offered in a space-saving 8-bump, 1.5mm x 1.5mm footprint, ultra chip-scale package (UCSP™).

Key Features

Applications/Uses

Ultra-Low Voltage Operation—Guaranteed Down to 1.8V
100µA Supply Current per Amplifier
500kHz Gain-Bandwidth Product
120dB Open-Loop Voltage Gain (R_L = 100kΩ)
0.017% Total Harmonic Distortion Plus Noise (THD + N) at 1kHz
Rail-to-Rail Input Common-Mode Range
Rail-to-Rail Output Drives 2kΩ Load
No Phase Reversal for Overdriven Inputs
Unity-Gain Stable for Capacitive Loads up to 100pF
200µV Input Offset Voltage (MAX4292/MAX4294)
Single in Small 5-Pin SC70
Available in Ultra-Small Packages:
- 5-Pin SC70 (MAX4291)
- 8-Bump UCSP (MAX4292)

	2-Cell Battery-Operated Systems
	Battery-Powered Applications
	Cell Phones
	Digital Scales/Strain Gauges
	Portable Electronic Equipment
	Sensor Amplifiers
	Strain Gauges

Key Specifications: Operational Amplifiers

Part Number

Amps Per Pkg.

Rail to Rail

Min. Stable Closed Loop Gain (V/V)

Min. Total Supply (V)

Max. Total Supply (V)

Typ. Supply Current per Amp. (µA)

Max. V_OS (µV)

Typ. CMRR @ DC (dB)

Typ PSRR @ DC (dB)

Max. Input I_BIAS (nA)

Typ. Unity Gain BW (MHz)

Typ. Slew Rate (V/µs)

Input Voltage Noise Density (nV/√Hz)

Input Current Noise Density (pA/√Hz)

Low Power Shutdown

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX4291

Input and Output

1.8

5.5

100

2,500

100

0.5

0.2

0.05

SC-70/5
SOIC/8
SOT-23/5

-40 to +85

$0.46 @ 1k

MAX4292

SOIC/8
UCSP/8
uMAX/8

$0.72 @ 1k

MAX4294

SOIC/14
TSSOP/14

$1.00 @ 1k

See All Operational Amplifiers (141)

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.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX4292EBL.pdf

		Request Reliability Report for:

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-31 of 31

MAX4291

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4291EXK

SC-70;5 pin;5 mm²
Dwg: 21-0076E (PDF)
Use pkgcode/variation: X5-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4291EXK+

SC-70;5 pin;5 mm²
Dwg: 21-0076E (PDF)
Use pkgcode/variation: X5+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4291EXK+T

SC-70;5 pin;5 mm²
Dwg: 21-0076E (PDF)
Use pkgcode/variation: X5+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4291EXK-T

SC-70;5 pin;5 mm²
Dwg: 21-0076E (PDF)
Use pkgcode/variation: X5-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4291ESA

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4291ESA-T

-40°C to +85°C

See data sheet

MAX4291EUK+

SOT-23;5 pin;9 mm²
Dwg: 21-0057F (PDF)
Use pkgcode/variation: U5+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4291EUK

SOT-23;5 pin;9 mm²
Dwg: 21-0057F (PDF)
Use pkgcode/variation: U5-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4291EUK+T

SOT-23;5 pin;9 mm²
Dwg: 21-0057F (PDF)
Use pkgcode/variation: U5+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4291EUK-T

SOT-23;5 pin;9 mm²
Dwg: 21-0057F (PDF)
Use pkgcode/variation: U5-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4292EUB

-40°C to +85°C

See data sheet

MAX4292ESA+T

-40°C to +85°C

See data sheet

MAX4292ESA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4292ESA

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292ESA-T

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292EBL

UCSP;8 pin;2 mm²
Dwg: 21-0093L (PDF)
Use pkgcode/variation: B9-2*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292EBL+

UCSP;8 pin;2 mm²
Dwg: 21-0093L (PDF)
Use pkgcode/variation: B9+2*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4292EBL-T

UCSP;8 pin;2 mm²
Dwg: 21-0093L (PDF)
Use pkgcode/variation: B9-2*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292EBL+T

UCSP;8 pin;2 mm²
Dwg: 21-0093L (PDF)
Use pkgcode/variation: B9+2*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4292EUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292EUA-T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4292EUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4292EUA+T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4294

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX4294ESD+

SOIC;14 pin;54 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S14+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4294ESD+T

SOIC;14 pin;54 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S14+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4294ESD-T

SOIC;14 pin;54 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S14-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4294ESD

SOIC;14 pin;54 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S14-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4294EUD+T

TSSOP;14 pin;33 mm²
Dwg: 21-0066I (PDF)
Use pkgcode/variation: U14+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4294EUD+

TSSOP;14 pin;33 mm²
Dwg: 21-0066I (PDF)
Use pkgcode/variation: U14+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX4294EUD

TSSOP;14 pin;33 mm²
Dwg: 21-0066I (PDF)
Use pkgcode/variation: U14-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX4294EUD-T

TSSOP;14 pin;33 mm²
Dwg: 21-0066I (PDF)
Use pkgcode/variation: U14-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

Notes and Comments

SC70, +1.8V, Rail-to-Rail I/O op amps, 0.017% THD+N, 120dB open-loop gain