Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOIC 14 N

LMC6034

www.ti.com

SNOS608C –MAY 1998–REVISED MARCH 2013

LMC6034 CMOS Quad Operational Amplifier

Check for Samples: LMC6034

FEATURES

DESCRIPTION

The LMC6034 is a CMOS quad operational amplifier

• Specified for 2 kΩ and 600Ω Loads

which can operate from either a single supply or dual

• High Voltage Gain: 126 dB

supplies. Its performance features include an input

• Low Offset Voltage Drift: 2.3 μV/°C

common-mode range that reaches ground, low input

bias current, and high voltage gain into realistic loads,

• Ultra Low Input Bias Current: 40 fA

such as 2 kΩ and 600Ω.

• Input Common-Mode Range Includes V

−

This chip is built with National's advanced Double-

• Operating Range from +5V to +15V Supply

Poly Silicon-Gate CMOS process.

• I

= 400 μA/Amplifier; Independent of V

See the LMC6032 datasheet for a CMOS dual

• Low Distortion: 0.01% at 10 kHz

operational amplifier with these same features. For

• Slew Rate: 1.1 V/μs

higher performance characteristics refer to the

• Improved Performance Over TLC274

LMC660.

APPLICATIONS

• High-Impedance Buffer or Preamplifier

• Current-to-Voltage Converter

• Long-Term Integrator

• Sample-and-Hold Circuit

• Medical Instrumentation

Connection Diagram

Figure 1. 14-Pin SOIC (Top View)

Guard Ring Connections – Non-Inverting Amplifier

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (22 pages)

PAGE 1
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 LMC6034 CMOS Quad Operational Amplifier Check for Samples: LMC6034 FEATURES DESCRIPTION • • • • • • • • • • The LMC6034 is a CMOS quad operational amplifier which can operate from either a single supply or dual supplies. Its performance features include an input common-mode range that reaches ground, low input bias current, and high voltage gain into realistic loads, such as 2 kΩ and 600Ω.
PAGE 2
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) (2) Differential Input Voltage ±Supply Voltage Supply Voltage (V+ − V−) 16V Output Short Circuit to V+ See (3) Output Short Circuit to V− See (4) Lead Temperature (Soldering, 10 sec.
PAGE 3
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 DC ELECTRICAL CHARACTERISTICS (continued) Unless otherwise specified, all limits guaranteed for TJ = 25°C. Boldface limits apply at the temperature extremes. V+ = 5V, V− = GND = 0V, VCM = 1.5V, VOUT = 2.5V, and RL > 1M unless otherwise specified. Symbol Parameter Conditions Typical (1) LMC6034I Units Limit (2) IOS Input Offset Current 0.
PAGE 4
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com DC ELECTRICAL CHARACTERISTICS (continued) Unless otherwise specified, all limits guaranteed for TJ = 25°C. Boldface limits apply at the temperature extremes. V+ = 5V, V− = GND = 0V, VCM = 1.5V, VOUT = 2.5V, and RL > 1M unless otherwise specified.
PAGE 5
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 TYPICAL PERFORMANCE CHARACTERISTICS VS = ±7.5V, TA = 25°C unless otherwise specified Note: Avoid resistive loads of less than 500Ω, as they may cause instability Supply Current vs Supply Voltage Input Bias Current Figure 2. Figure 3. Output Characteristics Current Sinking Output Characteristics Current Sourcing Figure 4. Figure 5. Input Voltage Noise vs Frequency CMRR vs Frequency Figure 6. Figure 7.
PAGE 6
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) VS = ±7.5V, TA = 25°C unless otherwise specified Note: Avoid resistive loads of less than 500Ω, as they may cause instability Open-Loop Frequency Response Frequency Response vs Capacitive Load Figure 8. Figure 9. Non-Inverting Large Signal Pulse Response Stability vs Capacitive Load Figure 10. Figure 11. Stability vs Capacitive Load Figure 12.
PAGE 7
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 APPLICATIONS HINT Amplifier Topology The topology chosen for the LMC6034, shown in Figure 13, is unconventional (compared to general-purpose op amps) in that the traditional unity-gain buffer output stage is not used; instead, the output is taken directly from the output of the integrator, to allow a larger output swing.
PAGE 8
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com (2) where (3) is the amplifier's low-frequency noise gain and GBW is the amplifier's gain bandwidth product. An amplifier's lowfrequency noise gain is represented by the formula (4) regardless of whether the amplifier is being used in inverting or non-inverting mode. Note that a feedback capacitor is more likely to be needed when the noise gain is low and/or the feedback resistor is large.
PAGE 9
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 Using the smaller capacitors will give much higher bandwidth with little degradation of transient response.
PAGE 10
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com To minimize the effect of any surface leakage, lay out a ring of foil completely surrounding the LMC6034's inputs and the terminals of capacitors, diodes, conductors, resistors, relay terminals, etc. connected to the op-amp's inputs. See Figure 17 . To have a significant effect, guard rings should be placed on both the top and bottom of the PC board.
PAGE 11
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 Figure 21. Guard Ring Connections Howland Current Pump The designer should be aware that when it is inappropriate to lay out a PC board for the sake of just a few circuits, there is another technique which is even better than a guard ring on a PC board: Don't insert the amplifier's input pin into the board at all, but bend it up in the air and use only air as an insulator. Air is an excellent insulator.
PAGE 12
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com Similarly, if S1 is shorted momentarily (while leaving S2 shorted) (11) where Cx is the stray capacitance at the + input. Typical Single-Supply Applications (V+ = 5.0 VDC) Additional single-supply applications ideas can be found in the LM324 datasheet. The LMC6034 is pin-for-pin compatible with the LM324 and offers greater bandwidth and input resistance over the LM324.
PAGE 13
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 (V+ = 5.0 VDC) Figure 26. Sine-Wave Oscillator Oscillator frequency is determined by R1, R2, C1, and C2: fosc = 1/2πRC, where R = R1 = R2 and C = C1 = C2. This circuit, as shown, oscillates at 2.0 kHz with a peak-to-peak output swing of 4.0V. Figure 27. 1 Hz Square-Wave Oscillator Figure 28.
PAGE 14
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com (V+ = 5.0 VDC) fO = 10 Hz Q = 2.1 Gain = −8.8 Figure 29. 10 Hz Bandpass Filter fc = 10 Hz d = 0.895 Gain = 1 2 dB passband ripple Figure 30. 10 Hz High-Pass Filter fc = 1 Hz d = 1.414 Gain = 1.57 Figure 31.
PAGE 15
LMC6034 www.ti.com SNOS608C – MAY 1998 – REVISED MARCH 2013 (V+ = 5.0 VDC) Gain = −46.8 Output offset voltage reduced to the level of the input offset voltage of the bottom amplifier(typically 1 mV). Figure 32.
PAGE 16
LMC6034 SNOS608C – MAY 1998 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision B (March 2013) to Revision C • 16 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.
PAGE 18
PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LMC6034IMX SOIC D 14 2500 330.0 16.4 6.5 9.35 2.3 8.0 16.0 Q1 LMC6034IMX/NOPB SOIC D 14 2500 330.0 16.4 6.5 9.35 2.3 8.0 16.
PAGE 20
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMC6034IMX SOIC D 14 2500 367.0 367.0 35.0 LMC6034IMX/NOPB SOIC D 14 2500 367.0 367.0 35.
PAGE 21
PAGE 22
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.