Overview
The AD847AQ is a high-speed, low-power monolithic operational amplifier produced by Analog Devices Inc. This op-amp is designed to offer high performance with low power consumption, making it suitable for a variety of high-density applications. The AD847AQ is fabricated using Analog Devices' proprietary complementary bipolar (CB) process, which enables the construction of pnp and npn transistors with similar fTs in the 600 MHz to 800 MHz region. This technology contributes to its high speed and low noise characteristics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 1 | - |
| Gain Bandwidth Product (GBP) | 30 | MHz |
| Slew Rate | 200 | V/μs |
| Common Mode Rejection Ratio (CMRR) | 95 | dB |
| Input Bias Current (Ib) | 5 | μA |
| Input Offset Voltage (Vos) | 500 | μV |
| Supply Voltage - Max | 36 | V |
| Supply Voltage - Min | 9 | V |
| Supply Current per Channel | 5.3 | mA |
| Maximum Operating Temperature | +125 | °C |
| Minimum Operating Temperature | -55 | °C |
| Input Voltage Noise Density | 15 | nV/√Hz at ±15 V |
| Power Dissipation | 1100 | mW |
| Power Supply Rejection Ratio (PSRR) | 86 | dB |
| Package/Case | CDIP-8 | - |
Key Features
- High Speed: The AD847AQ features a high gain bandwidth product of 30 MHz and a slew rate of 200 V/μs, making it suitable for high-speed applications.
- Low Power Consumption: With a supply current per channel of 5.3 mA, this op-amp is ideal for high-density applications where power efficiency is crucial.
- Low Input Offset Voltage: The AD847AQ has an input offset voltage of 500 μV, which is beneficial for precision applications.
- High Common Mode Rejection Ratio (CMRR): A CMRR of 95 dB ensures good rejection of common-mode signals.
- Wide Operating Temperature Range: The op-amp operates over a temperature range of -55°C to +125°C.
- Low Noise: The input voltage noise density is 15 nV/√Hz at ±15 V, contributing to its low noise performance.
Applications
- Input Buffer for Flash A/D Converters: The AD847AQ's full-power bandwidth of 12.7 MHz makes it an excellent choice as an input buffer for flash A/D converters.
- High-Density Active Filters: Its low power and small outline package make it well-suited for multiple pole active filters in high-density applications.
- Video Line Driver: The AD847AQ functions effectively as a low-cost, high-speed line driver for either terminated or unterminated cables.
- CCD Imaging and Video Speed Applications: It is used in circuits that require high speed and low noise, such as CCD imaging and other video speed applications.
- Output Buffer for High-Speed D/A Converters: The wide bandwidth and fast settling time of the AD847AQ make it a good output buffer for high-speed current-output D/A converters.
Q & A
- What is the gain bandwidth product (GBP) of the AD847AQ?
The gain bandwidth product (GBP) of the AD847AQ is 30 MHz.
- What is the slew rate of the AD847AQ?
The slew rate of the AD847AQ is 200 V/μs.
- What is the input offset voltage of the AD847AQ?
The input offset voltage of the AD847AQ is 500 μV.
- What is the common mode rejection ratio (CMRR) of the AD847AQ?
The common mode rejection ratio (CMRR) of the AD847AQ is 95 dB.
- What is the maximum supply voltage for the AD847AQ?
The maximum supply voltage for the AD847AQ is 36 V.
- What is the minimum operating temperature of the AD847AQ?
The minimum operating temperature of the AD847AQ is -55°C.
- What is the input voltage noise density of the AD847AQ?
The input voltage noise density of the AD847AQ is 15 nV/√Hz at ±15 V.
- What package type is the AD847AQ available in?
The AD847AQ is available in an 8-pin CDIP package.
- Can the AD847AQ be used as a video line driver?
Yes, the AD847AQ can be used as a low-cost, high-speed line driver for either terminated or unterminated cables.
- Is the AD847AQ suitable for high-density applications?
Yes, the AD847AQ is suitable for high-density applications due to its low power consumption and small outline package.
