TL071CP - Low-Noise JFET-Input Operational Amplifier

Overview

The TL071CP is a high-performance, low-noise JFET-input operational amplifier from the TL07x series, designed as an improved version of the TL08x series. It combines JFET inputs for high input impedance with bipolar output stages, all integrated into a single monolithic chip. This device is particularly well-suited for applications requiring low noise, low harmonic distortion, and high input impedance, such as audio preamplifiers and high-fidelity systems.

The TL071CP offers significant advantages over standard bipolar-input op-amps, including lower input bias currents, lower offset currents, and faster slew rates. These characteristics make it an excellent choice for precision analog circuits where signal integrity is paramount.

Features

• Low noise: 18 nV/√Hz typical at 1 kHz
• Low total harmonic distortion: 0.003% typical
• Wide common-mode and differential voltage ranges
• Low input bias and offset currents
• Output short-circuit protection
• High input impedance: JFET input stage
• Fast slew rate: 13 V/µs typical
• Low power consumption
• Latch-up free operation
• Available in 8-pin PDIP, SOIC, and TSSOP packages

Applications

The TL071CP is versatile and finds use in numerous analog circuit applications:

• High-fidelity audio preamplifiers
• Active filters
• Instrumentation amplifiers
• Sample-and-hold circuits
• Data acquisition systems
• Medical instrumentation
• Professional audio equipment
• Signal conditioning circuits
• Low-noise amplification stages
• Voltage followers

Electrical Characteristics

All specifications are given for V_CC = ±15V and T_A = 25°C unless otherwise noted.

Input Characteristics

• Input Offset Voltage: 3 mV (max)
• Input Bias Current: 65 pA (max)
• Input Offset Current: 30 pA (max)
• Input Resistance: 10¹² Ω (typ)
• Input Capacitance: 4 pF (typ)
• Common Mode Rejection Ratio: 86 dB (typ)

Output Characteristics

• Output Voltage Swing: ±12 V (min) with R_L = 10 kΩ
• Output Current: ±10 mA (min)
• Short Circuit Current: ±60 mA (max)

Dynamic Characteristics

• Slew Rate: 13 V/µs (typ)
• Gain Bandwidth Product: 3 MHz (typ)
• Settling Time (0.1%): 1.5 µs (typ) for 10V step

Power Supply Characteristics

• Supply Voltage Range: ±5V to ±18V
• Supply Current (per amplifier): 2.5 mA (typ)
• Power Consumption: 50 mW (typ) at ±15V

Package Information

The TL071CP is available in several package options:

8-Pin PDIP (Plastic Dual In-line Package)

• Package Code: P
• Dimensions: 9.81mm x 6.35mm x 3.3mm
• Pin Pitch: 2.54mm
• Operating Temperature Range: 0°C to 70°C
• Moisture Sensitivity Level (MSL): 1

8-Pin SOIC (Small Outline Integrated Circuit)

• Package Code: D
• Dimensions: 4.9mm x 3.91mm x 1.58mm
• Pin Pitch: 1.27mm
• Operating Temperature Range: 0°C to 70°C
• Moisture Sensitivity Level (MSL): 1

8-Pin TSSOP (Thin Shrink Small Outline Package)

• Package Code: PW
• Dimensions: 3.0mm x 4.4mm x 1.0mm
• Pin Pitch: 0.65mm
• Operating Temperature Range: 0°C to 70°C
• Moisture Sensitivity Level (MSL): 1

Pin Configuration

The TL071CP features the following pinout in 8-pin packages:

• Pin 1: Offset Null
• Pin 2: Inverting Input (-IN)
• Pin 3: Non-Inverting Input (+IN)
• Pin 4: Negative Power Supply (V_EE)
• Pin 5: Offset Null
• Pin 6: Output (OUT)
• Pin 7: Positive Power Supply (V_CC)
• Pin 8: No Connection (NC)

Design Considerations

When designing with the TL071CP, consider the following:

Power Supply Decoupling

Proper power supply decoupling is essential for optimal performance. Place 0.1µF ceramic capacitors as close as possible to the power supply pins, with a 1µF to 10µF tantalum or electrolytic capacitor for bulk decoupling.

PCB Layout

Maintain short lead lengths and proper grounding techniques to minimize noise pickup and ensure stability. Keep high-impedance nodes as small as possible to reduce stray capacitance.

Thermal Considerations

While the TL071CP has relatively low power consumption, in high-temperature environments or when driving heavy loads, consider thermal management techniques such as adequate copper area or heat sinking.

Reliability and Quality

The TL071CP is manufactured with stringent quality control measures and meets or exceeds the following reliability standards:

• ESD Protection: Human Body Model (HBM) ≥ 1000V
• Operating Life: 100,000 hours MTBF
• Manufacturing Process: High-reliability silicon-gate JFET process

Environmental Compliance

The TL071CP is available in lead-free and RoHS compliant versions, meeting current environmental regulations for electronic components.