World’s smallest single and quad-channel amplifiers and their applications

World’s smallest single and quad-channel amplifiers and their applications

World’s smallest single and quad-channel amplifiers and their applications

Introduction

Active and passive device manufacturers are keenly aware of the trend towards smaller sizes. There is a common path to integrated circuits. In some cases, by combining multiple features into a single part, producers can reduce the overall size of their devices. Nevertheless, only single-function devices including op-amps and LDO regulators, are going through some significant shrinkage. As the main building blocks in the signal chain, op-amps must keep pace with emerging trends in digital technology, including switching to smaller packages successively.

The designer needs to make improvements in multiple areas to fit the increased capacity into a smaller volume. Nevertheless, the three main ways to achieve are :

  1. Reducing the overall power consumption so that a smaller battery can be used;
  2. Combining multiple functions into a single package to reduce the number of devices;
  3. Picking individual components in the smallest available packages.

Smallest single and quad-channel amplifiers

The ever-increasing demand for applications to be simpler, lighter and more compact leaves the task of producing appropriate designs without sacrificing performance for current developers. Texas Instrument’s industry-leading tiny amplifiers help developers save board space while improving cost-constrained application efficiency. Featuring the world’s smallest single-channel amplifier the TLV9001 (0.8 X 0.8 mm) and the world’s smallest quad-channel amplifier, the TLV9064 (2.0 X 2.0 mm).

TLV9001 (World’s smallest single-channel amplifier)

TLV9001

(1-Channel, 1MHz, RRIO, 1.8V to 5.5V Operational Amplifier for Cost-Optimized Systems)

The TLV9001 is an operational amplifier (op-amps) with low voltage (1.8 V to 5.5 V) capabilities for rail-to-rail input and output swing. Such op amps provide a good cost-effective solution for space-constrained devices like smoke alarms, wearable gadgets, and small devices that require low-voltage operation and high-capacity power. The capacitive load drive of the TLV9001 is 500 pF, and the resistive open-loop impedance brings stability with much greater capacitive loads. For operation from 1.8 V to 5.5 V (±0.9 V to ±2.75 V), the TLV9001 is specified; other requirements extend from –40 ° C to + 125 ° C. The system may be permanently damaged by input voltages higher than 6 V. Place 0.1-μF bypass capacitor near the power supply pins to lessen noisy or high impedance coupling errors.

The TLV9001’s durable design simplifies the configuration of the circuit. The op-amps include unity gain balance, an integrated rejection filter for RFI and EMI, and an overdrive reversal of no-phase.

The device TLV9001 contains a shutdown mode (TLV9001S) that allows amplifiers to switch off to standby mode with a typical current consumption of less than 1 μA. The TLV9001 provides inner circuitry for ESD safety on all pins. Such safety consists primarily of current-steering diodes wired between the input and power-supply pins for input and output pins.

Such ESD security diodes offer overdrive safety in-circuit, entry, as long as the current is limited to 10 mA.

Applications:

The TLV9001 is an operational amplifier with low power, rail-to-rail input, and output specifically designed for portable applications. The device operates from 1.8 V to 5.5 V, is stable in unity gain, and is suitable for a wide range of applications for general use. The output stage of class AB is capable of driving less than or equivalent to 10-kilo ohm of attached loads at any point between V+ and V–. The voltage array for specific mode outputs covers all rails which allow the TLV9001 to be used in any single application.

  • Active filters
  • Barcode scanners
  • EPOS
  • HVAC: heating, ventilating, and air conditioning
  • Large and small appliances
  • Low-side current sensing
  • Motion detectors
  • Motor control: AC induction
  • Personal electronics
  • Power modules
  • Sensor signal conditioning
  • Smoke detectors
  • Wearable devices

TLV9064 (World’s smallest quad-channel amplifiers)

TLV9064

(4 channel, 10-MHz, Low-Noise, RRIO, CMOS Operational Amplifier for Cost-Sensitive Systems)

The TLV9064 is an operational amplifier (op-amps) with rail-to-rail input and output swing capability for quad-low voltage (1.8 V to 5.5 V). Such systems are extremely cost-effective solutions to applications involving low-voltage service, low footprint, and high-capacity load drive. While the TLV9064’s capacitive load control is 100 pF, the resistive open-loop output impedance simplifies stability for higher capacitive loads. For operation from 1.8 V to 5.5 V (±0.9 V to ±2.75 V), the TLV9064 is specified; other requirements extend from –40 ° C to 125 ° C. Place 0.1-μF bypass capacitor near the power supply pins to reduce noise or high impedance power supply coupling errors.

The TLV9064 devices include a shutdown mode which enables the amplifiers to switch to standby mode with less than 1 μA of typical current consumption. It features SHDN pins that remove the op-amp and position it in a standby mode of low power. The SHDN pins are active-low, which means that when the input to the SHDN pin is a true low logic, shutdown mode is allowed.

The TLV9064 helps simplify system design as it has stable in unity gain, incorporates the rejection filter RFI and EMI, and does not provide an overdrive phase reversal.

The TLV9064 provides inner circuits with ESD security on all pins. Such protection consists primarily of current-steering diodes wired between input and power-supply pins to input and output pins. These ESD safety diodes provide in-circuit, input overdrive protection as long as the current is limited to 10 mA.

Applications:

The TLV9064 has a bandwidth of 10-MHz and a slew rate of 6.5-V/μs with only 538 μA of supply current per channel, providing good AC performance at very low power consumption. DC systems are well suited with low input distortion voltage, low input bias voltage, and a standard 0.3 mV input offset voltage.

  • Active filters
  • Barcode scanners
  • E-bikes
  • HVAC: heating, ventilating, and air conditioning
  • Laptop computers
  • Low-side current sensing
  • Motor control: AC induction
  • Power modules
  • Refrigerators
  • Sensor signal conditioning
  • Smoke detectors
  • Washing machines
  • Wearable devices

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