Features
(VS = ±15, TA = 25°C, Typical values unless specified.)
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Wide supply voltage range
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2.5V to 32V
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Output current
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+65 mA/−100 mA
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Gain bandwidth product
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20 MHz
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Slew rate
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18 V/µs
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Capacitive load tolerance
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Unlimited
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Input common mode voltage
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0.3V beyond rails
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Input voltage noise
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15 nV/
√Hz
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Input current noise
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1.3 pA/
√Hz
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Supply current/channel
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1.1 mA
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Distortion THD+Noise
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−86 dB
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Temperature range
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−40°C to 125°C
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Tested at −40°C, 25°C and 125°C at 2.7V, ±5V, ±15V.
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LM7321Q/LM7322Q are Automotive Grade products that are AEC-Q100 Grade 1 qualified.
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Description The LM7321/LM7321Q/LM7322/LM7322Q are rail-to-rail input and output amplifiers with wide operating voltages and high output
currents. The LM7321/LM7321Q/LM7322/LM7322Q are efficient, achieving 18 V/µs slew rate and 20 MHz unity gain bandwidth
while requiring only 1 mA of supply current per op amp. The LM7321/LM7321Q/LM7322/LM7322Q performance is fully specified
for operation at 2.7V, ±5V and ±15V.
The LM7321/LM7321Q/LM7322/LM7322Q are designed to drive unlimited capacitive loads without oscillations. All LM7321/LM7321Q
and LM7322/LM732Q parts are tested at −40°C, 125°C, and 25°C, with modern automatic test equipment. High performance from
−40°C to 125°C, detailed specifications, and extensive testing makes them suitable for industrial, automotive, and communications
applications.
Greater than rail-to-rail input common mode voltage range with 50 dB of common mode rejection across this wide voltage range,
allows both high side and low side sensing. Most device parameters are insensitive to power supply voltage, and this makes
the parts easier to use where supply voltage may vary, such as automotive electrical systems and battery powered equipment.
These amplifiers have true rail-to-rail output and can supply a respectable amount of current (15 mA) with minimal head-
room from either rail (300 mV) at low distortion (0.05% THD+Noise). There are several package options for each part. Standard
SOIC versions of both parts make upgrading existing designs easy. LM7322LM7322Q are offered in a space saving 8-Pin MSOP
package. The LM7321/LM7321Q are offered in small SOT23-5 package, which makes it easy to place this part close to sensors
for better circuit performance.
Applications
Driving MOSFETs and power transistors
Capacitive proximity sensors
Driving analog optocouplers
High side sensing
Below ground current sensing
Photodiode biasing
Driving varactor diodes in PLLs
Wide voltage range power supplies
Automotive
International power supplies
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LM7322
