MAX44248：36V, Precision, Low-Power, 90µA, Single/Quad/Dual Op Amps

Precision, Low-Power Performance in High-Voltage Applications

The MAX44244/MAX44245/MAX44248 family of parts provide ultra-precision, low-noise, zero-drift single/quad/ dual operational amplifiers featuring very low-power operation with a wide supply range. The devices incorporate a patented auto-zero circuit that constantly measures and compensates the input offset to eliminate drift over time and temperature as well as the effect of 1/f noise. These devices also feature integrated EMI filters to reduce high-frequency signal demodulation on the output. The op amps operate from either a single 2.7V to 36V supply or dual ±1.35V to ±18V supply. The devices are unity-gain stable with a 1MHz gain-bandwidth product and a low 90µA supply current per amplifier. The low offset and noise specifications and high supply range make the devices ideal for sensor interfaces and transmitters. The devices are available in µMAX®, SO, SOT23, and TSSOP packages and are specified over the -40°C to +125°C automotive operating temperature range.

Key Features

Reduces Power for Sensitive Precision Applications
- Low 90µA Quiescent Current per Amplifier
Eliminates the Cost of Calibration with Increased Accuracy with Maxim’s Patented Autozero Circuitry
- Very Low Input Voltage Offset 7.5µV (max)
- Low 30nV/NC Offset Drift (max)
Low Noise Ideal for Sensor Interfaces and Transmitters
- 50nV/√Hz at 1kHz
- 0.5µVP-P from 0.1Hz to 10Hz
1MHz Gain-Bandwidth Product
- EMI Suppression Circuitry
Rail-to-Rail Output
Wide Supply for High-Voltage Front Ends
- 2.7V to 36V Supply Range
µMAX, SO, SOT23, TSSOP Packages

MAX44244: Typical Operating Circuit

Applications/Uses

4-20mA and 0 to 10V Transmitters
PLC Analog I/O Modules
Portable Medical Devices
Sensors Interfaces
Weight Scales

DataSheet

title	Download file
MAX44244-MAX44248 Data Sheet	MAX44244-MAX44248.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)	Low Input Bias CMOS Inputs	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	Low Input Bias CMOS Inputs	max	typ	typ	<	Package/Pins	See Notes
MAX44244	1	Output Only	2.7	36	100	7.5	130	148	Yes	0.3	1	0.7	50	µMAX/8 SOT/5	$1.32 @1k
MAX44245	4				90									SOIC(N)/14 TSSOP/14	$3.61 @1k
MAX44248	2				90									µMAX/8 SOIC(N)/8	$1.48 @1k

Design kits & evaluation modules

MAX44248EVKIT

Quality and Environmental Data

MAX44248.pdf

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX44248ASA+	Active	SOIC(N),;8 pin;30.9 mm²	-40°C to +125°C	Lead Free
MAX44248ASA+T	Active	SOIC(N),;8 pin;30.9 mm²	-40°C to +125°C	Lead Free
MAX44248AUA+	Active	µMAX,;8 pin;15.6 mm²	-40°C to +125°C	Lead Free
MAX44248AUA+T	Active	µMAX,;8 pin;15.6 mm²	-40°C to +125°C	Lead Free