CA3420 INTERSIL | Alldatasheet

Document overview

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  • PDF pages: 6

Technical content

Features

  • 2V Supply at 300µA Supply Current
  • 1pA Input Current (Typ) (Essentially Constant to 85oC)
  • Rail-to-Rail Output Swing (Drive±2mA into 1kΩ Load)
  • Pin Compatible with 741 Operational Amplifiers

Applications

  • pH Probe Amplifiers
  • Picoammeters
  • Electrometer (High Z) Instruments
  • Portable Equipment
  • Inaccessible Field Equipment
  • Battery-Dependent Equipment (Medical and Military) Functional Diagram Pinouts CA3420 (PDIP) TOP VIEW CA3420 (METAL CAN) TOP VIEW

Ordering Information

TEMP. RANGE ( oC) PACKAGE PKG. NO. CA3420AT -55 to 125 8 Pin Metal Can T8.C CA3420E -55 to 125 8 Ld PDIP E8.3 MOS BIPOLAR MOS BIPOLAR OTA BUFFER (X2) HIGH GAIN (50K) BUFFER AMPS; BOOTSTRAPPED INPUT PROTECTION NETWORK OFFSET NULL INV. INPUT NON-INV. INPUT STROBE OUTPUT OFFSET NULL OUTPUT OFFSET NULL4 STROBE NON-INV. INPUT INV. INPUT TAB OFFSET NULL 2 - Data Sheet April 2000

Absolute Maximum Ratings Thermal Information Operating Conditions Thermal Resistance (Typical, Note 2)θJA (oC/W) θJC (oC/W) CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. Short circuit may be applied to ground or to either supply. 2. θ JA is measured with the component mounted on an evaluation PC board in free air. Electrical SpecificationsTypical Values Intended Only for Design Guidance, VSUPPL Y =±10V, TA = 25oC PARAMETER SYMBOL TEST CONDITIONS CA3420A CA3420 UNITS Input Resistance R I 150 150 T Ω Input Capacitance C I 4.9 4.9 pF Output Resistance R O 300 300 Ω Equivalent Input Noise Voltage e N f = 1kHz R S = 100Ω 62 62 nV/ √Hz f = 10kHz 38 38 nV/ √Hz Short-Circuit Current Source I OM + 2.6 2.6 mA To Opposite Supply Sink I OM - 2.4 2.4 mA Gain Bandwidth Product f T 0.5 0.5 MHz Slew Rate SR 0.5 0.5 V/ µs Transient Response Rise Time t R R L = 2kΩ , CL = 100pF 0.7 0.7 µs Overshoot OS 15 15 % Current from Terminal 8 To V- I 8+2 0 2 0 µA To V+ I 8-2 2 m A Electrical SpecificationsFor Equipment Design, At VSUPPL Y =±1V, TA = 25oC, Unless Otherwise Specified PARAMETER SYMBOL TEST CONDITIONS CA3420 CA3420A UNITSMIN TYP MAX MIN TYP MAX Input Offset Voltage |V IO| - 5 10 - 2 5 mV Input Offset Current (Note 3) |I IO| - 0.01 4 - 0.01 4 pA Input Current (Note 3) |I I| - 1 5 - 0.02 5 pA Large Signal Voltage Gain A OL R L = 10kΩ 10 100 - 20 100 - kV/V 80 100 - 86 100 - dB Common Mode Rejection Ratio CMRR - 560 1800 - 560 1000 µV/V 55 65 - 60 65 - dB Common Mode Input Voltage Range V lCR+ 0.2 0.5 - 0.2 0.5 - V Power Supply Rejection Ratio PSRR ∆VIO/∆V - 100 1000 - 32 320 µV/V 60 80 - 70 90 - dB Max Output Voltage V OM +R L =∞ 0.90 0.95 - 0.90 0.95 - V Supply Current I+ - 350 650 - 350 650 µA Device Dissipation P D - 0.7 1.1 - 0.7 1.1 mW Input Offset Voltage Temperature Drift∆VlO/∆T - 4- - 4- µV/oC NOTE: 3. The maximum limit represents the levels obtainable on high speed automatic test equipment. Typical values are obtained under laboratory conditions. CA3420, CA3420A

CA3420, CA3420A Dual-In-Line Plastic Packages (PDIP) CL E eA C eB eC -B- INDEX 1 2 3 N/2 N AREA SEATING BASE PLANE PLANE -C- B e D AA2 L A 1 -A- 0.010 (0.25) C AM BS NOTES: 1. Controlling Dimensions: INCH. In case of conflict between English and Metric dimensions, the inch dimensions control. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication No. 95. 4. Dimensions A, A1 and L are measured with the package seated in JEDEC seating plane gauge GS-3. 5. D, D1, and E1 dimensions do not include mold flash or protru- sions. Mold flash or protrusions shall not exceed 0.010 inch (0.25mm). 6. E and are measured with the leads constrained to be per- pendicular to datum . 7. e B and eC are measured at the lead tips with the leads uncon- strained. eC must be zero or greater. 8. B1 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25mm). 9. N is the maximum number of terminal positions. 10. Corner leads (1, N, N/2 and N/2 + 1) for E8.3, E16.3, E18.3, E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm). eA -C- E8.3(JEDEC MS-001-BA ISSUE D)

8 LEAD DUAL-IN-LINE PLASTIC PACKAGE

A - 0.210 - 5.33 4 A1 0.015 - 0.39 - 4 A2 0.115 0.195 2.93 4.95 - B 0.014 0.022 0.356 0.558 - B1 0.045 0.070 1.15 1.77 8, 10 C 0.008 0.014 0.204 0.355 - D 0.355 0.400 9.01 10.16 5 D1 0.005 - 0.13 - 5 E 0.300 0.325 7.62 8.25 6 E1 0.240 0.280 6.10 7.11 5 e 0.100 BSC 2.54 BSC - e A 0.300 BSC 7.62 BSC 6 eB - 0.430 - 10.92 7 L 0.115 0.150 2.93 3.81 4 N8 8 9 Rev. 0 12/93

All Intersil semiconductor products are manufactured, assembled and tested underISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with- out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see web sitewww.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (321) 724-7000 FAX: (321) 724-7240 EUROPE Intersil SA Mercure Center 100, Rue de la Fusee

1130 Brussels, Belgium

TEL: (32) 2.724.2111 ASIA Intersil (Taiwan) Ltd. 7F-6, No. 101 Fu Hsing North Road Taipei, Taiwan Republic of China TEL: (886) 2 2716 9310 FAX: (886) 2 2715 3029 CA3420, CA3420A Metal Can Packages (Can) NOTES: 1. (All leads) Øb applies between L1 and L2. Øb1 applies between L2 and 0.500 from the reference plane. Diameter is uncontrolled in L1 and beyond 0.500 from the reference plane. 2. Measured from maximum diameter of the product. α is the basic spacing from the centerline of the tab to terminal 1 and β is the basic spacing of each lead or lead position (N -1 places) fromα ,looking at the bottom of the package. 4. N is the maximum number of terminal positions. 5. Dimensioning and tolerancing per ANSI Y14.5M - 1982. 6. Controlling dimension: INCH. Øb ØD2 Ø e k1 k βØb1 BASE AND SEATING PLANE F Q ØD ØD1 REFERENCE PLANE L A α Øb2Øb1 BASE METAL LEAD FINISH SECTION A-A A A N CL T8.C MIL-STD-1835 MACY1-X8 (A1)

8 LEAD METAL CAN PACKAGE

A 0.165 0.185 4.19 4.70 - Øb 0.016 0.019 0.41 0.48 1 Øb1 0.016 0.021 0.41 0.53 1 Øb2 0.016 0.024 0.41 0.61 - ØD 0.335 0.375 8.51 9.40 - ØD1 0.305 0.335 7.75 8.51 - ØD2 0.110 0.160 2.79 4.06 - e 0.200 BSC 5.08 BSC - e1 0.100 BSC 2.54 BSC - F - 0.040 - 1.02 - k 0.027 0.034 0.69 0.86 - k1 0.027 0.045 0.69 1.14 2 L 0.500 0.750 12.70 19.05 1 L1 - 0.050 - 1.27 1 L2 0.250 - 6.35 - 1 Q 0.010 0.045 0.25 1.14 - α 45o BSC 45 o BSC 3 β 45o BSC 45 o BSC 3 N8 8 4 Rev. 0 5/18/94