LMP7701 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – Precision, CMOS Input, RRIO, Wide Supply Range Amplifier

PRELIMINARY
September 2005
LMP7701
Precision, CMOS Input, RRIO, Wide Supply Range
Amplifier
General Description
The LMP7701 is a single, low offset voltage, rail-to-rail input
and output precision amplifier with a CMOS input stage and
a wide supply voltage range. The LMP7701 is part of the
LMP™ precision amplifier family and is ideal for sensor
interface and other instrumentation applications.
The guaranteed low offset voltage of less than ±200 µV
along with the guaranteed low input bias current of less than
±10 pA make the LMP7701 ideal for precision applications.
The LMP7701 is built utilizing VIP50 technology, which al-
lows the combination of a CMOS input stage and a 12V
common mode and supply voltage range. This makes the
LMP7701 a great choice in many applications where con-
ventional CMOS parts cannot operate under the desired
voltage conditions.
The LMP7701 has a rail-to-rail input stage that significantly
reduces the CMRR glitch commonly associated with rail-to-
rail input amplifiers. This is achieved by trimming both sides
of the complimentary input stage, thereby reducing the dif-
ference between the NMOS and PMOS offsets. The output
of the LMP7701 swings within 40 mV of either rail to maxi-
mize the signal dynamic range in applications requiring low
supply voltage.
The LMP7701 is offered in space saving SOT23-5. This
small package is an ideal solution for area constrained PC
boards and portable electronics.
Features
Unless otherwise noted, typical values at V_S = 5V
n Input offset voltage
±200 µV (max)
n Input bias current
300 fA
n Input voltage noise
12 nV/
n CMRR
100 dB
n Open loop gain
130 dB
n Temperature range
–40˚C to 125˚C
n Unity gain bandwidth
2.5 MHz
n Supply current
715 µA
n Supply Voltage Range
2.7V to 12V
n Rail-to-rail input and output
Applications
n High impedance sensor interface
n Battery powered instrumentation
n High gain amplifiers
n DAC buffer
n Instrumentation amplifier
n Active filters
Typical Application
Precision Current Source
LMP™ is a trademark of National Semiconductor Corporation.
© 2005 National Semiconductor Corporation DS201273
20127305
www.national.com