LMP7701_06 Datasheet, PDF (1/22 Pages) National Semiconductor (TI) – Precision, CMOS Input, RRIO, Wide Supply Range Amplifiers

October 2006
LMP7701/LMP7702/LMP7704
Precision, CMOS Input, RRIO, Wide Supply Range
Amplifiers
General Description
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
the LMP™ precision amplifier family and are 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
±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.
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.
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.
Features
Unless otherwise noted, typical values at V_S = 5V
n Input offset voltage (LMP7701)
±200 µV (max)
n Input offset voltage (LMP7702/LMP7704) ±220 µV (max)
n Input bias current
±200 fA
n Input voltage noise
9 nV/
n CMRR
130 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 (LMP7701)
715 µA
n Supply current (LMP7702)
1.5 mA
n Supply current (LMP7704)
2.9 mA
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.
© 2006 National Semiconductor Corporation DS201273
20127305
www.national.com