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
|
|
Output current
|
+65 mA/−100 mA
|
|
Gain bandwidth product
|
20 MHz
|
|
Slew rate
|
18 V/µs
|
|
Capacitive load tolerance
|
Unlimited
|
|
Input common mode voltage
|
0.3V beyond rails
|
|
Input voltage noise
|
15 nV/
√Hz
|
|
Input current noise
|
1.3 pA/
√Hz
|
|
Supply current/channel
|
1.1 mA
|
|
Distortion THD+Noise
|
−86 dB
|
|
Temperature range
|
−40°C to 125°C
|
|
Tested at −40°C, 25°C and 125°C at 2.7V, ±5V, ±15V.
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Description The LM7321/LM7322 are rail-to-rail input and output amplifiers with wide operating voltages and high output currents. The
LM7321/LM7322 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/LM7322 performance is fully specified for operation at 2.7V, ±5V and ±15V.
The LM7321/LM7322 are designed to drive unlimited capacitive loads without oscillations. All LM7321 and LM7322 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. LM7322 is offered in a space saving 8-Pin MSOP package.
The LM7321 is 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 |
|
|
LM7321
LM7322
