INA159 Datasheet, PDF (1/14 Pages) Texas Instruments – Precision, Gain of 0.2 Level Translation DIFFERENCE AMPLIFIER

INA159
SBOS333B − JULY 2005 − REVISED OCTOBER 2005
Precision, Gain of 0.2 Level Translation
DIFFERENCE AMPLIFIER
FEATURES
D GAIN OF 0.2 TO INTERFACE ±10V SIGNALS
TO SINGLE-SUPPLY ADCs
D GAIN ACCURACY: ±0.024% (max)
D WIDE BANDWIDTH: 1.5MHz
D HIGH SLEW RATE: 15V/µs
D LOW OFFSET VOLTAGE: ±100µV
D LOW OFFSET DRIFT: ±1.5µV/°C
D SINGLE-SUPPLY OPERATION DOWN TO 1.8V
APPLICATIONS
D INDUSTRIAL PROCESS CONTROLS
D INSTRUMENTATION
D DIFFERENTIAL TO SINGLE-ENDED
CONVERSION
D AUDIO LINE RECEIVERS
DESCRIPTION
The INA159 is a high slew rate, G = 1/5 difference amplifier
consisting of a precision op amp with a precision resistor
network. The gain of 1/5 makes the INA159 useful to
couple ±10V signals to single-supply analog-to-digital
converters (ADCs), particularly those operating on a single
+5V supply. The on-chip resistors are laser-trimmed for
accurate gain and high common-mode rejection. Excellent
temperature coefficient of resistance (TCR) tracking of the
resistors maintains gain accuracy and common-mode
rejection over temperature. The input common-mode
voltage range extends beyond the positive and negative
supply rails. It operates on a total of +1.8V to +5.5V single
or split supplies. The INA159 reference input uses two
resistors for easy mid-supply or reference biasing.
The difference amplifier is the foundation of many
commonly-used circuits. The INA159 provides this circuit
function without using an expensive external precision
resistor network. The INA159 is available in an MSOP-8
surface-mount package and is specified for operation over
the extended industrial temperature range, −40°C to
+125°C.
5V
V_REF
V+
−IN ^100kΩ
20kΩ
SENSE
V_IN ^{+IN 100kΩ}
INA159
40kΩ
40kΩ
REF 2
REF 1
R₁
100Ω
REF V+
+IN
C₁
−IN
1000pF
ADS8325
ADC
D_OUT
DCLOCK
CS
GND
Figure 1. Typical Application
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2005, Texas Instruments Incorporated
www.ti.com