DatasheetsPDF.com

ALD1722E Dataheets PDF



Part Number ALD1722E
Manufacturers Advanced Linear Devices
Logo Advanced Linear Devices
Description LOW POWER CMOS OPERATIONAL AMPLIFIER
Datasheet ALD1722E DatasheetALD1722E Datasheet (PDF)

ADVANCED LINEAR DEVICES, INC. EPAD® LOW POWER CMOS OPERATIONAL AMPLIFIER TM e® EPAD D E L B A N E ALD1722E KEY FEATURES • EPAD (Electrically Programmable Analog Device) • User programmable VOS trimmer • Computer-assisted trimming • Rail-to-rail input/output • Compatible with standard EPAD Programmer • High precision through in-system circuit precision trimming • Reduces or eliminates VOS, PSRR, CMRR and TCVOS errors • System level “calibration” capability • Application Specific Programming mod.

  ALD1722E   ALD1722E


Document
ADVANCED LINEAR DEVICES, INC. EPAD® LOW POWER CMOS OPERATIONAL AMPLIFIER TM e® EPAD D E L B A N E ALD1722E KEY FEATURES • EPAD (Electrically Programmable Analog Device) • User programmable VOS trimmer • Computer-assisted trimming • Rail-to-rail input/output • Compatible with standard EPAD Programmer • High precision through in-system circuit precision trimming • Reduces or eliminates VOS, PSRR, CMRR and TCVOS errors • System level “calibration” capability • Application Specific Programming mode • In-System Programming mode • Electrically programmable to compensate for external component tolerances • Achieves 0.01pA input bias current and 25µV input offset voltage simultaneously • Compatible with industry standard pinout BENEFITS • Eliminates manual system trimming • Drive up to 4000pF load capacitance • Remote controlled automated trimming • In-System Programming capable • Industry standard pinout • Rail-to-rail input/output • Input bias current of 0.01pA and input offset voltage of 25µV • No external components • No internal chopper clocking noise • No chopper dynamic power dissipation • Simple and cost effective • Small package size • Low power GENERAL DESCRIPTION The ALD1722E is a monolithic rail-to-rail precision CMOS operational amplifier with integrated user programmable EPAD (Electrically Programmable Analog Device) based offset voltage adjustment. The ALD1722E is a direct replacement of the ALD1712 operational amplifier, with the added feature of user-programmable offset voltage trimming resulting in significantly enhanced total system performance and user flexibility. EPAD technology is an exclusive ALD design which has been refined for analog applications where precision voltage trimming is necessary to achieve a desired performance. It utilizes CMOS FETs as in-circuit elements for trimming of offset voltage bias characteristics with the aid of a personal computer under software control. Once programmed, the set parameters are stored indefinitely within the device even after powerdown. EPAD offers the circuit designer a convenient and cost-effective trimming solution for achieving the very highest amplifier/system performance. The ALD1722E operational amplifier features rail-to-rail input and output voltage ranges, tolerance to over-voltage input spikes of 300mV beyond supply rails, high capacitive loading up to 4000pF, extremely low input currents of 0.01pA typical, high open loop voltage gain, useful bandwidth of 1.5MHz, slew rate of 2.1V/µs, and low supply current of 0.8mA. APPLICATIONS • Sensor interface circuits • Unity gain buffer amplifier • Precision analog cable driver • Transducer biasing circuits • Capacitive and charge integration circuits • Biochemical probe interface • Signal conditioning • Portable instruments • High source impedance electrode amplifiers • Precision Sample and Hold amplifiers • Precision current to voltage converter • Error correction circuits • Sensor compensation circuits • Precision gain amplifiers • Current sources • Periodic In-system calibration • System output level shifter PIN CONFIGURATION ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS)) Operating Temperature Range 0°C to +70°C 0°C to +70°C -55°C to +125°C 8-Pin Small Outline Package (SOIC) 8-Pin Plastic Dip Package 8-Pin CERDIP Package ALD1722ESAL ALD1722EPAL ALD1722EDA * Contact factory for leaded (non-RoHS) or high temperature versions. VE1 1 -IN 2 2 8 VE2 7 V+ +IN 3 6 OUT V- 4 5 N/C TOP VIEW SAL, PAL, DA PACKAGES * N/C Pin is internally connected. Do not connect externally. Rev 2.1 ©2011 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286 www.aldinc.com FUNCTIONAL DESCRIPTION The ALD1722E uses EPADs as in-circuit elements for trimming of offset voltage bias characteristics. Each ALD1722E has a pair of EPAD-based circuits connected such that one circuit is used to adjust VOS in one direction and the other circuit is used to adjust VOS in the other direction. While each of the EPAD devices is a monotonically adjustable programmable device, the VOS of the ALD1722E can be adjusted many times in both directions. Once programmed, the set VOS levels are stored permanently, even when the device power is removed. The ALD1722E is pre-programmed at the factory under standard operating conditions for minimum equivalent input offset voltage. It also has a guaranteed offset voltage program range, which is ideal for applications that require electrical offset voltage programming. The ALD1722E is an operational amplifier that can be trimmed with user application-specific programming or insystem programming conditions. User application-specific circuit programming refers to the situation where the Total Input Offset Voltage of the ALD1722E can be trimmed with the actual intended operating conditions. For example, an app.


ALD1722 ALD1722E ALD1726


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)