Datasheet AD548 (Analog Devices)

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Precision, Low Power BiFET Op Amp AD548 FEATURES CONNECTION DIAGRAMS Enhanced Replacement for LF441 and TL061 Plastic Mini-DIP (N) Package DC Performance: and 200 A max Quiescent Current SOIC (R)Package 10 pA max Bias Current, Warmed Up (AD548C) 250 V max Offset Voltage (AD548C) 2 V/ C max Drift (AD548C) OFFSET NULL 1 8 NC 2 V p-p Noise, 0.1 Hz to 10 Hz INVERTING 2 7 V+ INPUT AC Performance: NONINVERTING 3 6 OUTPUT 1.8 V/ s Slew Rate INPUT 1 MHz Unity Gain Bandwidth V– 4 AD548 5 OFFSET TOP VIEW NULL Available in Plastic and Hermetic Metal Can Packages and in Chip Form Available in Tape and Reel in Accordance with NOTE: PIN 4 CONNECTED TO CASE NC = NO CONNECT EIA-481A Standard MIL-STD-883B Parts Available Dual Version Available: AD648 10k Surface-Mount (SOIC) Package Available 1 5 –15V PRODUCT DESCRIPTION 4 V
The AD548 is a low power, precision monolithic operational
OS TRIM TOP VIEW
amplifier. It offers both low bias current (10 pA max, warmed up) and low quiescent current (200 µA max) and is fabricated with ion-implanted FET and laser wafer trimming technologies. Input bias current is guaranteed over the AD548’s entire common-mode voltage range.
PRODUCT HIGHLIGHTS
The economical J grade has a maximum guaranteed input offset 1. A combination of low supply current, excellent dc and ac voltage of less than 2 mV and an input offset voltage drift of less performance and low drift makes the AD548 the ideal op than 20 µV/°C. This level of dc precision is achieved utilizing amp for high performance, low power applications. Analog’s laser wafer drift trimming process. The combination of 2. The AD548 is pin compatible with industry standard op low quiescent current and low offset voltage drift minimizes amps such as the LF441, TL061, and AD542, enabling changes in input offset voltage due to self-heating effects. designers to improve performance while achieving a reduction The AD548 is recommended for any dual supply op amp applica- in power dissipation of up to 85%. tion requiring low power and excellent dc and ac performance. 3. Guaranteed low input offset voltage (2 mV max) and drift In applications such as battery-powered, precision instrument (20 µV/°C max) for the AD548J are achieved utilizing front ends and CMOS DAC buffers, the AD548’s excellent com- Analog Devices’ laser drift trimming technology, eliminating bination of low input offset voltage and drift, low bias current, the need for external trimming. and low 1/f noise reduces output errors. High common-mode 4. Analog Devices specifies each device in the warmed-up rejection (82 dB, min on the “B” grade) and high open-loop condition, insuring that the device will meet its published gain ensures better than 12-bit linearity in high impedance, specifications in actual use. buffer applications. 5. A dual version, the AD648, is also available. The AD548 is pinned out in a standard op amp configuration and is available in three performance grades. The AD548J and 6. Enhanced replacement for LF441 and TL061. AD548K are rated over the commercial temperature range of 0°C to 70°C. The AD548B is rated over the industrial tempera- ture range of –40°C to +85°C. The AD548 is available in an 8-lead plastic mini-DIP and surface-mount (SOIC) packages. REV. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that
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