MAX4249, MAX4250, MAX4251, MAX4252, MAX4253, MAX4254, MAX4255, MAX4256, MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps

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The MAX4249–MAX4257 low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and single-supply operation down to 2.4V. They draw 400µA of quiescent supply current per amplifier while featuring ultra-low distortion (0.0002% THD), as well as low input voltage-noise density (7.9nV per root-Hz ) and low input current-noise density (0.5fA per root-Hz). These features make the devices an ideal choice for portable/battery-powered applications that require low distortion and/or low noise.

For additional power conservation, the MAX4249/MAX4251/MAX4253/MAX4256 offer a low-power shutdown mode that reduces supply current to 0.5µA and puts the amplifiers' outputs into a high-impedance state. The MAX4249–MAX4257's outputs swing rail-to-rail and their input common-mode voltage range includes ground. The MAX4250–MAX4254 are unity-gain stable with a gain-bandwidth product of 3MHz. The MAX4249/MAX4255/MAX4256/MAX4257 are internally compensated for gains of 10V/V or greater with a gain-bandwidth product of 22MHz. The single MAX4250/MAX4255 are available in space-saving 5-pin SOT23 packages. The MAX4252 is available in an 8-bump chip-scale package (UCSP™) and the MAX4253 is available in a 10-bump UCSP. The MAX4250AAUK comes in a 5-pin SOT23 package and is specified for operation over the automotive (-40°C to +125°C) temperature range.

Key Features

Applications/Uses

Available in Space-Saving UCSP, SOT23, and µMAX® Packages
Low Distortion: 0.0002% THD (1kΩ load)
400µA Quiescent Supply Current per Amplifier
Single-Supply Operation from 2.4V to 5.5V
Input Common-Mode Voltage Range Includes Ground
Outputs Swing Within 8mV of Rails with a 10kΩ Load
3MHz GBW Product, Unity-Gain Stable (MAX4250-MAX4254) 22MHz GBW Product, Stable with AV > 10V/V (MAX4249/MAX4255/MAX4256/MAX4257)
Excellent DC Characteristics
- V_OS = 70µV
- I_BIAS = 1pA
- Large-Signal Voltage Gain = 116dB
Low-Power Shutdown Mode
- Reduces Supply Current to 0.5µA
- Places Outputs in a High-Impedance State
400pF Capacitive-Load Handling Capability

	ADC Buffers
	Digital Scales/Strain Gauges
	Medical Instrumentation
	PA Control
	Portable Battery-Powered Equipment
	Wireless Communications Devices

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. 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	Price^**
MAX4249	2	Output Only	10	2.4	5.5	420	575	750	115	100	0.1	22	2.1	8.9	0.0005	Yes	SOIC/14 uMAX/10	$0.87 @ 1k
MAX4250	1		1									3	0.3			No	SOT-23/5	$0.83 @ 1k
MAX4251	1		1									3	0.3			Yes	SOIC/8 uMAX/8	$0.95 @ 1k
MAX4252	2		1									3	0.3			No	SOIC/8 UCSP/0 UCSP/8 uMAX/8	$0.80 @ 1k
MAX4253	2		1									3	0.3			Yes	SOIC/14 UCSP/0 UCSP/10 uMAX/10	$0.87 @ 1k
MAX4254	4		1									3	0.3			No	SOIC/14	$2.20 @ 1k
MAX4255	1		10									22	2.1			No	SOT-23/5	$0.83 @ 1k
MAX4256	1		10									22	2.1			No	SOIC/8 uMAX/8	$0.95 @ 1k
MAX4257	2		10									22	2.1			No	SOIC/8 uMAX/8	$0.80 @ 1k
See All Operational Amplifiers (137)

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.