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PDF LM7321 Data sheet ( Hoja de datos )
| Número de pieza | LM7321 | |
| Descripción | (LM7321 / LM7322) High Output Current and Unlimited Capacitive Load Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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May 28, 2008
LM7321/LM7322 Rail-to-Rail Input/Output
±15V, High Output Current and Unlimited Capacitive Load
Operational Amplifier
General Description
The LM7321/LM7322 are rail-to-rail input and output ampli-
fiers 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 per-
www.DataSheefto4rUm.caonmce is fully specified for operation at 2.7V, ±5V and
±15V.
The LM7321/LM7322 are designed to drive unlimited capac-
itive 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, de-
tailed specifications, and extensive testing makes them suit-
able for industrial, automotive, and communications applica-
tions.
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 de-
vice 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 pow-
ered 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 up-
grading 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.
Features
(VS = ±15, TA = 25°C, Typical values unless specified.)
■ Wide supply voltage range
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.
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
Typical Performance Characteristics
Output Swing vs. Sourcing Current
Large Signal Step Response
20205736
© 2008 National Semiconductor Corporation 202057
20205749
www.national.com
1 page  
Symbol
Parameter
AVOL
Open Loop Voltage Gain
VOUT
Output Voltage Swing
High
Output Voltage Swing
Low
www.DataSheet4U.com
IOUT Output Current
IS Supply Current
Condition
−13V ≤ VO ≤ 13V
RL = 10 kΩ to 0V
−13V ≤ VO ≤ 13V
RL = 2 kΩ to 0V
RL = 10 kΩ to 0V
VID = 100 mV
RL = 2 kΩ to 0V
VID = 100 mV
RL = 10 kΩ to 0V
VID = −100 mV
RL = 2 kΩ to 0V
VID = −100 mV
Sourcing
VID = 200 mV, VOUT = −15V (Note 3)
Sinking
VID = −200 mV, VOUT = 15V (Note 3)
VCM = −14.5V
LM7321
LM7322
SR
fu
GBW
en
in
THD+N
CT Rej.
Slew Rate
(Note 10)
Unity Gain Frequency
Gain Bandwidth
Input Referred Voltage Noise Density
AV = +1, VI = 20V Step
RL = 2 kΩ, CL = 20 pF
f = 50 kHz
f = 2 kHz
Input Referred Current Noise Density f = 2 kHz
Total Harmonic Distortion +Noise
Crosstalk Rejection
f = 1 kHz,RL 100 kΩ,
AV = +2, VOUT = 23 VPP
f = 100 kHz, Driver RL = 10 kΩ
Min
(Note 7)
75
70
Typ
(Note 6)
85
Max
(Note 7)
70 78
65
Units
dB
150 300
350
250 550
650 mV from
60 200 either rail
250
130 300
400
40 65
60 100
mA
1.1
2.5
18
11.3
20
15
1.3
−86
1.7
2.4
mA
4
5.6
V/µs
MHz
MHz
nV/
pA/
dB
60 dB
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC)
Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC).
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150°C. Short circuit test is a momentary test. Output short circuit duration is infinite for VS ≤ 6V at room temperature
and below. For VS > 6V, allowable short circuit duration is 1.5 ms.
Note 4: The maximum power dissipation is a function of TJ(MAX), θJA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX)) - TA)/ θJA. All numbers apply for packages soldered directly onto a PC board.
Note 5: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating
of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ >
TA.
Note 6: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will
also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.
Note 7: All limits are guaranteed by testing or statistical analysis.
Note 8: Offset voltage temperature drift determined by dividing the change in VOS at temperature extremes into the total temperature change.
Note 9: Positive current corresponds to current flowing into the device.
Note 10: Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower.
5 www.national.com
5 Page 
IBIAS vs. VCM
IBIAS vs. VS
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IBIAS vs. VS
20205725
IS vs. VCM (LM7321)
20205722
IS vs. VCM (LM7322)
20205721
IS vs. VCM (LM7321)
20205718
20205775
11
20205719
www.national.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet LM7321.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LM7321 | LM7321x Single and LM7322x Dual Rail-to-Rail Input and Output 15-V High-Output Current and Unlimited Capacitive Load Operational Amplifier (Rev. E) |  Texas Instruments |
| LM7321 | (LM7321 / LM7322) High Output Current and Unlimited Capacitive Load Operational Amplifier | National Semiconductor |
| LM7322 | LM7321x Single and LM7322x Dual Rail-to-Rail Input and Output 15-V High-Output Current and Unlimited Capacitive Load Operational Amplifier (Rev. E) | Texas Instruments |
| LM7322 | (LM7321 / LM7322) High Output Current and Unlimited Capacitive Load Operational Amplifier | National Semiconductor |
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