MAX494：Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op Amps

The dual MAX492, quad MAX494, and single MAX495 operational amplifiers combine excellent DC accuracy with rail-to-rail operation at the input and output. Since the common-mode voltage extends from VCC to VEE, the devices can operate from either a single supply (+2.7V to +6V) or split supplies (±1.35V to ±3V). Each op amp requires less than 150µA supply current. Even with this low current, the op amps are capable of driving a 1kΩ load, and the input referred voltage noise is only 25nV/√Hz. In addition, these op amps can drive loads in excess of 1nF. The precision performance of the MAX492/MAX494/MAX495, combined with their wide input and output dynamic range, low-voltage single-supply operation, and very low supply current, makes them an ideal choice for battery-operated equipment and other low-voltage applications. The MAX492/MAX494/MAX495 are available in DIP and SO packages in the industry-standard op-amp pin configurations. The MAX495 is also available in the smallest 8-pin SO: the µMAX® package.

Key Features

Low-Voltage Single-Supply Operation (+2.7V to +6V)
Rail-to-Rail Input Common-Mode Voltage Range
Rail-to-Rail Output Swing
500kHz Gain-Bandwidth Product
Unity-Gain Stable
150µA Max Quiescent Current per Op Amp
No Phase Reversal for Overdriven Inputs
200µV Offset Voltage
High Voltage Gain (108dB)
High CMRR (90dB) and PSRR (110dB)
Drives 1kΩ Load
Drives Large Capacitive Loads
MAX495 Available in µMAX Package-8-Pin SO
Dual, precision, rail-to-rail input and output (MAX492)
Quad, precision, rail-to-rail input and output (MAX494)
Single, precision, rail-to-rail input and output (MAX495)

MAX492, MAX495: Pin Configuration

Applications/Uses

Battery-Powered Applications
Data Acquisition
Low-Voltage Applications
Portable Equipment
Signal Conditioning

DataSheet

title	Download file
MAX492-MAX495 Data Sheet	MAX492-MAX495.pdf

Parametrics

Part Number	Amps.	Rail to Rail	V_SUPPLY (Total) (V)	V_SUPPLY (Total) (V)	I_CC per Amp. (µA)	V_OS (µV)	CMRR @DC (dB)	PSRR @DC (dB)	Input I_BIAS (nA)	Unity Gain BW (MHz)	Slew Rate (V/µs)	e_n (nV/√Hz)	Package/Pins	Budgetary Price
Part Number	Amps.	Rail to Rail	min	max	typ	max	typ	typ	max	typ	typ	<	Package/Pins	See Notes
MAX492	2	Input/Output	2.7	6	150	500	90	110	60	0.5	0.2	25	CDIP(N)/8 PDIP(N)/8 SOIC(N)/8	$4.17 @1k
MAX494	4	Input/Output	2.7	6	150	500	90	110	60	0.5	0.2	25	CDIP(N)/14 PDIP(N)/14 SOIC(N)/14	$4.52 @1k

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX494CPD	No Longer Available	MAX494CPD+	PDIP(N),;14 pin;158.4 mm²	0°C to +70°C	No
MAX494CPD+	Active		PDIP(N),;14 pin;158.4 mm²	0°C to +70°C	Lead Free
MAX494CSD	No Longer Available	MAX494CSD+	SOIC(N),;14 pin;54.2 mm²	0°C to +70°C	No
MAX494CSD+	Active		SOIC(N),;14 pin;54.2 mm²	0°C to +70°C	Lead Free
MAX494CSD+T	Active		SOIC(N),;14 pin;54.2 mm²	0°C to +70°C	Lead Free
MAX494CSD-T	No Longer Available	MAX494CSD+T	SOIC(N),;14 pin;54.2 mm²	0°C to +70°C	No
MAX494EPD	No Longer Available	MAX494EPD+	PDIP(N),;14 pin;158.4 mm²	-40°C to +85°C	No
MAX494EPD+	Active		PDIP(N),;14 pin;158.4 mm²	-40°C to +85°C	Lead Free
MAX494ESD	No Longer Available	MAX494ESD+	SOIC(N),;14 pin;54.2 mm²	-40°C to +85°C	No
MAX494ESD+	Active		SOIC(N),;14 pin;54.2 mm²	-40°C to +85°C	Lead Free
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX494ESD+T	Active		SOIC(N),;14 pin;54.2 mm²	-40°C to +85°C	Lead Free
MAX494ESD-T	No Longer Available	MAX494ESD+T	N.SO;14 pin	-40°C to +85°C	See data sheet
MAX494MJD	No Longer Available		CDIP(N),;14 pin;162.1 mm²	-55°C to +125°C	No

MAX492-MAX495.pdf MAX494

MAX492-MAX495.pdf MAX495