LM346 Datasheet, PDF (1/24 Pages) National Semiconductor (TI) – LM146/LM346 Programmable Quad Operational Amplifiers

LM146, LM346
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SNOSBH5B – MAY 2004 – REVISED SEPTEMBER 2004
LM146/LM346 Programmable Quad Operational Amplifiers
Check for Samples: LM146, LM346
FEATURES
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•2 (I_SET=10 μA)
• Programmable Electrical Characteristics
• Battery-Powered Operation
• Low Supply Current: 350 μA/Amplifier
• Ensured Gain Bandwidth Product: 0.8 MHz Min
• Large DC Voltage Gain: 120 dB
• Low Noise Voltage: 28 nV/√Hz
• Wide Power Supply Range: ±1.5V to ±22V
• Class AB Output Stage–No Crossover
Distortion
• Ideal Pin Out for Biquad Active Filters
• Input Bias Currents are Temperature
Compensated
DESCRIPTION
The LM146 series of quad op amps consists of four
independent, high gain, internally compensated, low
power, programmable amplifiers. Two external
resistors (R_SET) allow the user to program the gain
bandwidth product, slew rate, supply current, input
bias current, input offset current and input noise. For
example, the user can trade-off supply current for
bandwidth or optimize noise figure for a given source
resistance. In a similar way, other amplifier
characteristics can be tailored to the application.
Except for the two programming pins at the end of
the package, the LM146 pin-out is the same as the
LM124 and LM148.
Connection Diagram
Figure 1. Dual-In-Line Package - Top View
See Package Number NFE0016A, D0016A or N16A
PROGRAMMING EQUATIONS
Total Supply Current = 1.4 mA (I_SET/10 μA)
Gain Bandwidth Product = 1 MHz (I_SET/10 μA)
Slew Rate = 0.4V/μs (I_SET/10 μA)
Input Bias Current ≃ 50 nA (I_SET/10 μA)
I_SET = Current into pin 8, pin 9 (see Schematic Diagram)
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2
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information 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 © 2004, Texas Instruments Incorporated