Overview
The AD830JR-REEL7, produced by Analog Devices Inc., is a wideband, differencing amplifier designed primarily for use at video frequencies but is also versatile in various other applications. This amplifier accurately amplifies fully differential signals at the input and produces an output voltage referenced to a user-chosen level, while rejecting the undesired common-mode signal even at high frequencies.
The AD830 offers significant improvements over traditional discrete difference amplifier approaches, particularly in high-frequency common-mode rejection. Its high impedance inputs facilitate easy interfacing with finite source impedances, preserving excellent common-mode rejection.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| 3 dB Small Signal Bandwidth | Gain = +1, VOUT = 100 mV rms | 35 | 40 | 40 | MHz |
| 0.1 dB Gain Flatness Frequency | Gain = +1, VOUT = 100 mV rms | 5 | 6.5 | 6.5 | MHz |
| Differential Gain Error | 0 V to 0.7 V, frequency = 4.5 MHz, Gain = +2 | 0.14 | 0.18 | 0.18 | % |
| Differential Phase Error | 0 V to 0.7 V, frequency = 4.5 MHz, Gain = +2 | 0.32 | 0.4 | 0.4 | Degrees |
| Slew Rate | 2 V step, RL = 500 Ω | 210 | 210 | 210 | V/μs |
| Supply Voltage | ±5 V / ±15 V | V | |||
| Output Drive | ±50 | mA |
Key Features
- Wideband Operation: The AD830 operates effectively across a wide frequency range, making it suitable for video and other high-frequency applications.
- High Common-Mode Rejection Ratio (CMRR): Offers excellent CMRR, ensuring minimal interference from common-mode signals.
- High Impedance Inputs: Facilitates easy interfacing with finite source impedances, preserving common-mode rejection.
- Low Distortion: Features low distortion with a THD of −72 dB at 4 MHz.
- Flexible Supply Voltages: Specified for operation with both ±5 V and ±15 V supplies.
- High Output Drive: Capable of driving high output currents of up to ±50 mA.
- Symmetrical Dynamic Response: Ensures consistent performance for both positive and negative gain settings.
Applications
- Differential Line Receiver: Ideal for receiving differential signals in high-speed applications.
- High Speed Level Shifter: Suitable for level shifting in high-speed systems.
- High Speed In-Amp: Used in instrumentation amplifiers requiring high-speed operation.
- Differential to Single-Ended Conversion: Converts differential signals to single-ended signals efficiently.
- Resistorless Summation and Subtraction: Enables summation and subtraction of signals without the need for external resistors.
- High Speed Analog-to-Digital Converter: Can be used in the front-end of high-speed ADC systems.
Q & A
- What is the primary application of the AD830JR-REEL7?
The AD830JR-REEL7 is primarily designed for use at video frequencies but is also useful in many other high-speed applications.
- What is the common-mode rejection ratio (CMRR) of the AD830?
The AD830 offers a high CMRR, typically around 60 dB at 4 MHz.
- What are the supply voltage options for the AD830?
The AD830 can operate with both ±5 V and ±15 V supplies.
- What is the slew rate of the AD830?
The slew rate of the AD830 is 360 V/μs for a 2 V step with a 500 Ω load.
- What is the differential gain error of the AD830?
The differential gain error is typically 0.06% for a gain of +1 and 0.14% for a gain of +2.
- What is the output drive capability of the AD830?
The AD830 can drive output currents of up to ±50 mA.
- What are some common applications of the AD830?
Common applications include differential line receivers, high-speed level shifters, high-speed in-amps, differential to single-ended conversion, resistorless summation and subtraction, and high-speed analog-to-digital converters.
- How does the AD830 handle high-frequency common-mode signals?
The AD830 rejects common-mode signals even at high frequencies due to its high CMRR and symmetrical dynamic response.
- What is the settling time of the AD830?
The settling time to 0.1% is typically 35 ns for a 2 V step.
- What package options are available for the AD830JR-REEL7?
The AD830 is available in 8-lead Plastic PDIP (N), CERDIP (Q), and SOIC (RN) packages.
