HA22004P: Precision Applications and Performance Details

* Question

What are the main performance indicators of the device HA22004P?

* Answer

The HA22004P is a quad operational amplifier from Intersil (now part of Analog Devices). It is a high-performance op-amp designed for precision signal processing applications, featuring low noise, low offset voltage, and high gain bandwidth. The HA22004P is typically used in systems requiring multiple op-amps in one package, like analog signal conditioning and filtering.

Here are the main performance indicators for the HA22004P operational amplifier:

Table of Contents

1. Input Offset Voltage (V_os)

Typical: 250 µV
Maximum: 500 µV
The input offset voltage is a measure of the voltage difference between the inverting and non-inverting inputs required to make the output zero when the op-amp is in a closed-loop configuration. Lower values are preferable for precision applications.

2. Input Bias Current (I_b)

Typical: 100 nA
Maximum: 200 nA
The input bias current is the average of the DC currents required by the op-amp’s inputs to properly operate the internal transistors. A lower input bias current is preferred for high-impedance signal sources.

3. Input Offset Current (I_os)

Typical: 20 nA
Maximum: 40 nA
The input offset current is the difference in the bias currents between the inverting and non-inverting inputs. Smaller values of offset current help minimize errors in differential measurements.

4. Gain Bandwidth Product (GBP or GBW)

Typical: 1.5 MHz
This value represents the product of the amplifier’s bandwidth and its closed-loop gain. It defines the frequency range over which the op-amp can amplify signals effectively while maintaining its specified gain.

5. Slew Rate (SR)

Typical: 0.3 V/µs
The slew rate is the maximum rate at which the output voltage can change. A higher slew rate is preferable for applications with high-frequency signals or fast changes in the input signal.

6. Power Supply Voltage (V_s)

Minimum: ±3 V
Maximum: ±18 V
The op-amp operates with dual power supplies, and the specified voltage range ensures proper functioning across various application environments.

7. Output Voltage Swing

Typical: ±12 V (at ±15 V supply)
The output voltage swing is the range within which the output voltage can vary in response to input signals, without distortion or clipping.

8. Common-Mode Rejection Ratio (CMRR)

Typical: 100 dB
Minimum: 80 dB
CMRR is the ability of the op-amp to reject common-mode signals (signals that appear simultaneously on both the inverting and non-inverting inputs). A higher CMRR indicates better rejection of noise or interference.

9. Power Consumption

Typical: 4 mA (per amplifier)
The power consumption of the HA22004P is relatively low, which is typical for op-amps, making it suitable for battery-operated or low-power applications.

10. Total Harmonic Distortion (THD)

Typical: 0.002%
Maximum: 0.005%
THD is a measure of the distortion introduced by the amplifier. Low THD is critical in high-fidelity audio and precision signal applications, as it ensures minimal alteration of the input signal.

11. Output Drive Capability

The HA22004Pcan drive relatively low loads and can typically source or sink currents of around 10 mA (per op-amp) to drive standard loads.

12. Temperature Range

Operating Temperature: -40°C to +85°C
The op-amp is rated for industrial and commercial temperature ranges, making it suitable for a wide range of environments.

Summary of Key Performance Indicators:

Input Offset Voltage: 250 µV (typical)
Input Bias Current: 100 nA (typical)
Gain Bandwidth Product: 1.5 MHz
Slew Rate: 0.3 V/µs
Supply Voltage: ±3 V to ±18 V
Output Voltage Swing: ±12 V (at ±15 V supply)
CMRR: 100 dB (typical)
Power Consumption: 4 mA (per amplifier)
Total Harmonic Distortion: 0.002% (typical)
Temperature Range: -40°C to +85°C

These parameters make the HA22004P a good choice for applications that require multiple, low-noise, precision op-amps, such as signal conditioning, active filters, and low-frequency amplifiers.