A
L
D
DVANCED
INEAR
EVICES, INC.
ALD1712A/ALD1712B
ALD1712
RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The ALD1712 is a monolithic precision operational amplifier intended
primarilyforawiderangeofanalogapplicationsin+5Vsinglepowersupply
and ±5Vdualpowersupplysystemsaswellas+6Vto12Vbatteryoperated
systems. All device characteristics are specified for +5V single supply or
±2.5V dual supply systems. It is manufactured with Advanced Linear
Devices'enhancedACMOSsilicongateCMOSprocessandisavailableas
a standard cell in ALD's ASIC "Function-Specific" library.
• Linear mode operation with input voltages
300mV beyond supply rails
• Symmetrical complementary output drive
• Output voltages to within 2mV of power
supply rails
• High load capacitance capability --
4000pF typical
• No frequency compensation required --
unity gain stable
Thedevicehasaninputstagethatoperatesto+300mVaboveand-300mV
below the supply voltages with no adverse effects and/or phase reversals.
• Extremely low input bias currents --
0.01pA typical
The ALD1712 has been developed specifically with the 5V single supply or
±2.5V dual supply user in mind. Several important characteristics of the
device make many applications easy to implement for these supply
voltages. First, the operational amplifier can operate with rail-to-rail input
and output voltages. This feature allows numerous analog serial stages to
be implemented without losing operating voltage margin. Secondly, the
device was designed to accommodate mixed applications where digital
and analog circuits may work off the same 5V power supply. Thirdly, the
output stage can drive up to 400pF capacitive, and 1KΩ resistive loads in
non-invertingunitygainconnection, andupto4000pFatagainof5. These
features, coupled with extremely low input currents, high voltage gain,
useful bandwidth of 1.5MHz, slew rate of 2.1V/µs, low power dissipation,
low offset voltage and temperature drift, make the ALD1712 a truly
versatile, user friendly, operational amplifier.
• Dual power supply ±2.5V to ±6.0V
• Single power supply +5V to +12V
• High voltage gain – typically 85V/mV
@ ±2.5V and 250V/mV @ ±5.0V
• Drive as low as 1KΩ load with 5mA
drive current
• Output short circuit protected
• Unity gain bandwidth of 1.5MHz
• Slew rate of 2.1V/µs
APPLICATIONS
• Voltage amplifier
• Voltage follower/buffer
• Charge integrator
On-chipoffsetvoltagetrimmingallowsthedevicetobeusedwithoutnulling
in most applications. The device offers typical offset drift of less than 5µV/
°C which eliminates many trim or temperature compensation circuits. For
precision applications, the 1712 is designed to settle to 0.01% in 8µs. The
unique characteristics at input and output are modeled in an available
macromodel.
• Photodiode amplifier
• Data acquisition systems
• High performance portable instruments
• Signal conditioning circuits
• Sensor and transducer amplifiers
• Low leakage amplifiers
• Active filters
• Sample/Hold amplifier
• Picoammeter
• Current to voltage converter
• Coaxial cable driver
PIN CONFIGURATION
ORDERING INFORMATION
Operating Temperature Range
-55°C to +125°C
0°C to +70°C
0°C to +70°C
N/C
-IN
1
8
7
6
5
N/C
8-Pin
CERDIP
Package
8-Pin
Small Outline
Package (SOIC)
8-Pin
Plastic Dip
Package
2
2
V
S
3
4
OUT
N/C
+IN
ALD 1712A DA
ALD 1712B DA
ALD 1712 DA
ALD 1712 ASA
ALD 1712 BSA
ALD 1712 SA
ALD 1712A PA
ALD 1712B PA
ALD 1712 PA
-
V
TOP VIEW
DA, PA, SA PACKAGE
* Contact factory for industrial temperature range
* N/C Pin is connected internally. Do not connect externally.
© 1998 Advanced Linear Devices, Inc. 415Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
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