Overview
The ADA4084-2ARMZ-R7, produced by Analog Devices Inc., is a dual-channel, rail-to-rail input/output, low-power operational amplifier. This device is well-suited for single-supply applications that require both AC and precision DC performance. It features a wide bandwidth, low noise, and high precision, making it versatile for various applications such as filters, instrumentation, and telecommunications equipment.
Key Specifications
| Specification | Value | Conditions |
|---|---|---|
| Number of Channels | 2 | |
| Bandwidth | 10 MHz | |
| Gain Bandwidth Product | 15.9 MHz (typical at AV = 100) | VIN = 5mV p-p, RL = 10 kΩ, VSY = ±15V |
| Unity-Gain Crossover | 9.9 MHz (typical) | VIN = 5mV p-p, RL = 10 kΩ, AV = 1, VSY = ±15V |
| −3 dB Closed-Loop Bandwidth | 13.9 MHz (typical) | VSY = ±15V |
| Offset Voltage | 130 µV (maximum at VSY = 3V) | −40°C ≤ TA ≤ +125°C |
| Slew Rate | 4.6 V/µs (typical) | VSY = ±15V, RL = 2 kΩ |
| Voltage Noise Density | 3.9 nV/√Hz (typical at 1 kHz) | VSY = 3V |
| Input Bias Current | 140 nA to 250 nA | −40°C ≤ TA ≤ +125°C |
| Input Offset Current | 5 nA to 25 nA | −40°C ≤ TA ≤ +125°C |
| Common-Mode Rejection Ratio (CMRR) | 106 dB to 124 dB | VCM = ±14 V, −40°C ≤ TA ≤ +125°C |
| Power Supply Rejection Ratio (PSRR) | 110 dB to 120 dB | VSY = ±2 V to ±18 V |
| Supply Current per Amplifier | 0.625 mA (typical at VSY = ±15V) | |
| Operating Temperature Range | −40°C to +125°C | |
| Package Type | 8-lead MSOP |
Key Features
- Rail-to-rail input and output
- Low power consumption: 0.625 mA typical per amplifier at ±15 V
- High gain bandwidth product: 15.9 MHz typical at AV = 100
- Unity-gain stable with a unity-gain crossover of 9.9 MHz typical
- Low offset voltage: 130 µV maximum
- High slew rate: 4.6 V/µs typical
- Low noise: 3.9 nV/√Hz typical at 1 kHz
- High common-mode rejection ratio (CMRR): 106 dB to 124 dB
- High power supply rejection ratio (PSRR): 110 dB to 120 dB
Applications
- Battery-powered instrumentation
- High-side and low-side sensing
- Power supply control and protection
- Telecommunications equipment
- Digital-to-analog converter (DAC) output amplifiers
- Analog-to-digital converter (ADC) input buffers
- Filters and instrumentation
- Portable telecommunications equipment
- Sensors requiring rail-to-rail input amplifiers (e.g., Hall effect, piezoelectric, resistive transducers)
Q & A
- What is the bandwidth of the ADA4084-2ARMZ-R7 operational amplifier?
The bandwidth of the ADA4084-2ARMZ-R7 is 10 MHz.
- What is the typical gain bandwidth product of the ADA4084-2ARMZ-R7?
The typical gain bandwidth product is 15.9 MHz at AV = 100.
- What is the slew rate of the ADA4084-2ARMZ-R7?
The slew rate is 4.6 V/µs typical.
- What is the voltage noise density of the ADA4084-2ARMZ-R7?
The voltage noise density is 3.9 nV/√Hz typical at 1 kHz.
- What is the operating temperature range of the ADA4084-2ARMZ-R7?
The operating temperature range is −40°C to +125°C.
- What are the common package types for the ADA4084-2?
The ADA4084-2 is available in 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount packages.
- What is the typical supply current per amplifier for the ADA4084-2ARMZ-R7?
The typical supply current per amplifier is 0.625 mA at VSY = ±15V.
- What are some common applications for the ADA4084-2ARMZ-R7?
Common applications include battery-powered instrumentation, high-side and low-side sensing, power supply control and protection, telecommunications, and DAC/ADC amplifiers.
- Is the ADA4084-2ARMZ-R7 unity-gain stable?
Yes, the ADA4084-2ARMZ-R7 is unity-gain stable.
- What is the common-mode rejection ratio (CMRR) of the ADA4084-2ARMZ-R7?
The CMRR is 106 dB to 124 dB.
