LF347, LF347B JFET-INPUT QUAD OPERATIONAL AMPLIFIERS SLOS013B – MARCH 1987 – REVISED AUGUST 1994 D D D D D D D D OR N PACKAGE (TOP VIEW) Low Input Bias Current . . . 50 pA Typ Low Input Noise Current 0.01 pA/√Hz Typ Low Total Harmonic Distortion Low Supply Current . . . 8 mA Typ Gain Bandwidth . . . 3 MHz Typ High Slew Rate . . . 13 V/µs Typ Pin Compatible With the LM348 1OUT 1IN – 1IN + VCC + 2IN + 2IN – 2OUT 1 14 2 13 3 12 4 11 5 10 6 9 7 8 4OUT 4IN – 4IN + VCC – 3IN + 3IN – 3OUT description These devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current. The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits. The LF347 and LF347B are characterized for operation from 0°C to 70°C. symbol (each amplifier) IN – – IN + + OUT AVAILABLE OPTIONS VIOmax AT 25°C TA 0°C to 70°C PACKAGE SMALL OUTLINE (D) PLASTIC DIP (N) 10 mV LF347D LF347N 5 mV LF347BD LF347BN The D packages are available taped and reeled. Add R suffix to the device type (e.g., LF347DR). absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC + . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Supply voltage, VCC – . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 18 V Differential input voltage, VID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 30 V Input voltage, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 15 V Duration of output short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C NOTE 1: Unless otherwise specified, the absolute maximum negative input voltage is equal to the negative power supply voltage. Copyright 1994, Texas Instruments Incorporated 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 LF347, LF347B JFET-INPUT QUAD OPERATIONAL AMPLIFIERS SLOS013B – MARCH 1987 – REVISED AUGUST 1994 DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR DERATE ABOVE TA TA = 70°C POWER RATING D N 608 mW 680 mW 7.6 mW/°C N/A 61°C N/A 608 mW 680 mW recommended operating conditions MIN MAX UNIT Supply voltage, VCC + 3.5 18 V Supply voltage, VCC – – 3.5 – 18 V electrical characteristics over operating free-air temperature range, VCC ± = ±15 V (unless otherwise specified) PARAMETER TEST CONDITIONS VIO Input offset voltage VIC = 0,, RS = 10 kΩ αVIO Average temperature coefficient of input offset voltage VIC = 0, RS = 10 kΩ IIO Inp t offset current Input c rrent‡ VIC = 0 IIB Inp t bias current Input c rrent‡ Common-mode input voltage range VOM Maximum peak output voltage swing RL = 10 kΩ AVD Large signal differential voltage Large-signal VO = ± 10 V,, RL = 2 kΩ ri Input resistance CMRR kSVR MIN 25°C LF347B TYP MAX 5 10 Full range MIN TYP MAX 3 5 13 7 18 25°C 100 50 200 70°C 100 pA 4 nA 50 200 pA 8 nA 8 ± 11 – 12 to 15 ± 12 25°C 25 Full range 15 mV 25 4 25°C UNIT µV/°C 18 25 70°C VIC = 0 VICR LF347 TA† ± 11 – 12 to 15 V ± 13.5 ± 12 ± 13.5 V 100 50 100 V/mV 25 1012 Ω 80 100 dB 80 100 dB 1012 Common-mode rejection ratio TA = 25°C RS ≤ 2 kΩ 70 100 Supply-voltage rejection ratio See Note 2 70 100 ICC Supply current 8 11 8 11 mA † Full range is 0°C to 70°C. ‡ Input bias currents of a FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive. Pulse techniques must be used that will maintain the junction temperatures as close to the ambient temperature as possible. NOTE 2: Supply-voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously. operating characteristics, VCC± = ±15 V PARAMETER TEST CONDITIONS VO1/VO2 SR Crosstalk attentuation B1 Vn Unity-gain bandwidth Equivalent input noise voltage f = 1 kHz, In Equivalent input noise current f = 1 kHz 2 MIN f = 1 kHz 120 Slew rate 8 POST OFFICE BOX 655303 TYP RS = 20 Ω • DALLAS, TEXAS 75265 MAX UNIT dB 13 V/µs 3 MHz 18 nV/√Hz 0.01 pA/√Hz IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof. Copyright 1998, Texas Instruments Incorporated