October 2006
LMP7701/LMP7702/LMP7704
Precision, CMOS Input, RRIO, Wide Supply Range
Amplifiers
General Description
Features
The LMP7701/LMP7702/LMP7704 are single, dual, and
quad low offset voltage, rail-to-rail input and output precision
amplifiers each with CMOS input stage and wide supply
voltage range. The LMP7701/LMP7702/LMP7704 are part of
Unless otherwise noted, typical values at VS = 5V
n Input offset voltage (LMP7701)
n Input offset voltage (LMP7702/LMP7704) 220 µV (max)
n Input bias current
n Input voltage noise
n CMRR
200 µV (max)
200 fA
9 nV/
™
the LMP precision amplifier family and are ideal for sensor
interface and other instrumentation applications.
130 dB
130 dB
The guaranteed low offset voltage of less than 200 µV
along with the guaranteed low input bias current of less than
1 pA make the LMP7701 ideal for precision applications.
The LMP7701/LMP7702/LMP7704 are built utilizing VIP50
technology, which allows the combination of a CMOS input
stage and a 12V common mode and supply voltage range.
This makes the LMP7701/LMP7702/LMP7704 great choices
in many applications where conventional CMOS parts can-
not operate under the desired voltage conditions.
n Open loop gain
n Temperature range
n Unity gain bandwidth
n Supply current (LMP7701)
n Supply current (LMP7702)
n Supply current (LMP7704)
n Supply voltage range
n Rail-to-rail input and output
−40˚C to 125˚C
2.5 MHz
715 µA
1.5 mA
2.9 mA
2.7V to 12V
The LMP7701/LMP7702/LMP7704 have 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 difference between the NMOS and
PMOS offsets. The output of the LMP7701/LMP7702/
LMP7704 swings within 40 mV of either rail to maximize the
signal dynamic range in applications requiring low supply
voltage.
Applications
n High impedance sensor interface
n Battery powered instrumentation
n High gain amplifiers
n DAC buffer
n Instrumentation amplifier
n Active filters
The LMP7701 is offered in the space saving 5-Pin SOT23
package, the LMP7702 is offered in the 8-Pin MSOP, and the
quad LMP7704 is offered in the 14-Pin TSSOP package.
These small packages are ideal solutions for area con-
strained PC boards and portable electronics.
Typical Application
20127305
Precision Current Source
™
LMP is a trademark of National Semiconductor Corporation.
© 2006 National Semiconductor Corporation
DS201273
www.national.com