Overview
The AD204KN, produced by Analog Devices Inc., is a general-purpose, two-port, transformer-coupled isolation amplifier. This component is designed for applications where input signals must be measured, processed, and/or transmitted without a galvanic connection. The AD204KN offers a complete isolation function, providing both signal and power isolation in a single compact plastic SIP or DIP style package. It is particularly useful in scenarios requiring high accuracy, low power consumption, and wide bandwidth.
Key Specifications
| Parameter | AD204J | AD204K |
|---|---|---|
| GAIN Range | 1 V/V – 100 V/V | 1 V/V – 100 V/V |
| Error | ±0.5% typ (±4% max) | ±0.5% typ (±4% max) |
| Nonlinearity (G = 1 V/V) | ±0.05% max | ±0.025% max |
| Power Consumption | 35 mW | 35 mW |
| Bandwidth | 5 kHz Full-Power | 5 kHz Full-Power |
| Common-Mode Isolation | ±1000 V pk Continuous | ±2000 V pk Continuous |
| Temperature Range | 0°C to 70°C (Rated Performance), -40°C to +85°C (Operating and Storage) | 0°C to 70°C (Rated Performance), -40°C to +85°C (Operating and Storage) |
| Package Dimensions | SIP: 2.08" x 0.250" x 0.625", DIP: 2.10" x 0.700" x 0.350" | SIP: 2.08" x 0.250" x 0.625", DIP: 2.10" x 0.700" x 0.350" |
Key Features
- Small Size: Available in SIP and DIP form packages, with the SIP package being just 0.25" wide, allowing for four channels per inch.
- High Accuracy: Maximum nonlinearity of ±0.025% for K grade models and ±0.05% for J grade models, with low drift over temperature.
- Low Power: Consumes a low 35 mW of power, making it ideal for applications with large channel counts or tight power budgets.
- Wide Bandwidth: Full-power bandwidth of 5 kHz, suitable for wideband signals and control loops.
- Excellent Common-Mode Performance: Provides ±2000 V pk continuous common-mode isolation for K grade models and ±1000 V pk for J grade models, with a CMR of 130 dB at a gain of 100 V/V.
- Flexible Input: Includes an uncommitted op amp at the input stage for buffering, gain, and various input functions such as filtering and current input.
- Isolated Power Outputs: Can supply isolated power of ±7.5 V at 2 mA, sufficient for operating low-drift input preamps or powering ancillary circuits.
Applications
- Multichannel Data Acquisition: Ideal for systems requiring multiple isolated channels.
- Current Shunt Measurements: Used in applications where current needs to be measured accurately without galvanic connection.
- Motor Controls: Suitable for motor control systems that require isolated signal processing.
- Process Signal Isolation: Isolates process signals to prevent ground loops and ensure signal integrity.
- High Voltage Instrumentation Amplifier: Used in high voltage applications where signal isolation is critical.
Q & A
- What is the primary function of the AD204KN isolation amplifier?
The AD204KN is designed to measure, process, and transmit input signals without a galvanic connection, providing both signal and power isolation.
- What are the available package types for the AD204KN?
The AD204KN is available in SIP (Single In-Line Package) and DIP (Dual In-Line Package) form factors.
- What is the maximum nonlinearity of the AD204K model?
The maximum nonlinearity for the AD204K model is ±0.025%.
- What is the power consumption of the AD204KN?
The AD204KN consumes 35 mW of power.
- What is the bandwidth of the AD204KN?
The full-power bandwidth of the AD204KN is 5 kHz.
- What is the common-mode isolation voltage for the AD204K model?
The AD204K model provides ±2000 V pk continuous common-mode isolation.
- Can the AD204KN supply isolated power?
Yes, the AD204KN can supply isolated power of ±7.5 V at 2 mA.
- What are some typical applications of the AD204KN?
Typical applications include multichannel data acquisition, current shunt measurements, motor controls, process signal isolation, and high voltage instrumentation.
- Is the AD204KN still in production?
No, the AD204KN is no longer manufactured and is listed as obsolete or last time buy depending on the specific model variant.
- What is the temperature range for the AD204KN?
The rated performance temperature range is 0°C to 70°C, with an operating and storage range of -40°C to +85°C.
