Overview
The AD637JRZ-RL, produced by Analog Devices Inc., is a high-accuracy, wideband RMS-to-DC converter. This component is designed to compute the true RMS value of any complex waveform, offering performance comparable to discrete and modular techniques in terms of accuracy, bandwidth, and dynamic range. It can handle both AC and DC input signals and operates from a single or dual polarity power supply, making it versatile for various applications. The AD637JRZ-RL is particularly useful in scenarios where precise power monitoring and measurement are required, such as in power monitoring, audio/video equipment, and industrial instrumentation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Maximum Nonlinearity | - | - | 0.02% | - |
| Input Range | 0 | - | 2 | V rms |
| Bandwidth | - | - | 8 MHz @ 2 V rms, 600 kHz @ 100 mV rms | - |
| Supply Current | - | 2.2 | - | mA |
| Power-Down Current | - | - | 350 | μA |
| Operating Voltage Range | ±3 | - | ±18 | V |
| dB Output Range | - | - | 60 | dB |
| Crest Factor Compensation | - | - | Up to 10 with < 1% additional error | - |
| Package Type | - | - | 16-Lead SOIC_W | - |
Key Features
- High accuracy RMS-to-DC conversion with 0.02% maximum nonlinearity for inputs up to 2 V rms.
- Wide dynamic range of 60 dB and bandwidth up to 8 MHz for inputs above 1 V rms.
- Operates from a single or dual polarity power supply (±3V to ±18V).
- Low supply current of 2.2 mA and power-down current of 350 μA for low-power applications.
- Chip select/power-down feature allowing analog three-state operation and high impedance output when powered down.
- Direct dB value of the rms output available on a separate pin with a range of 60 dB.
- Internal trimming for offset and scale factor errors without external trimming.
- On-chip buffer amplifier for input buffering or active filter configuration to reduce ac ripple.
Applications
- Power monitoring and measurement.
- Audio and video equipment.
- Industrial instrumentation and control systems.
- Medical equipment.
- Test and measurement devices.
Q & A
- What is the primary function of the AD637JRZ-RL? The AD637JRZ-RL is a high-accuracy, wideband RMS-to-DC converter that computes the true RMS value of any complex waveform.
- What is the maximum nonlinearity of the AD637JRZ-RL? The maximum nonlinearity is 0.02% for inputs up to 2 V rms.
- What is the bandwidth of the AD637JRZ-RL? The bandwidth is up to 8 MHz for inputs above 1 V rms and up to 600 kHz for inputs of 200 mV rms.
- How does the power-down feature work? The chip select/power-down feature reduces the supply current from 2.2 mA to 350 μA and puts the output in a high impedance state when powered down.
- What is the operating voltage range of the AD637JRZ-RL? The operating voltage range is ±3V to ±18V.
- What is the dB output range of the AD637JRZ-RL? The dB output range is 60 dB.
- How does the crest factor compensation work? The AD637JRZ-RL can measure signals with crest factors up to 10 with less than 1% additional error.
- What package type is the AD637JRZ-RL available in? The AD637JRZ-RL is available in a 16-Lead SOIC_W package.
- What are some common applications of the AD637JRZ-RL? Common applications include power monitoring, audio/video equipment, industrial instrumentation, medical equipment, and test and measurement devices.
- Is the AD637JRZ-RL still in production? The AD637JRZ-RL is an obsolete product, but equivalent or alternative models are available from Analog Devices.
