Overview
The ADR434ARMZ from Analog Devices Inc. is a precision voltage reference belonging to the ADR430/ADR431/ADR433/ADR434/ADR435 series. This family of XFET® voltage references is characterized by low noise, high accuracy, and minimal temperature drift performance. Utilizing Analog Devices' patented temperature drift curvature correction and extra implanted junction FET (XFET) technology, these references minimize voltage change vs. temperature nonlinearity. The ADR434ARMZ operates at lower current (800 µA) and lower supply voltage headroom (2 V) compared to traditional buried Zener references, making it an ideal solution for 5 V systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | VOUT | 4.091 | 4.096 | 4.101 | V (A Grade) |
| Output Voltage | VOUT | 4.0945 | 4.096 | 4.0975 | V (B Grade) |
| Initial Accuracy | VOERR | ±5 mV | mV (A Grade) | ||
| Initial Accuracy | VOERR | ±1.5 mV | mV (B Grade) | ||
| Temperature Coefficient | TCVO | 10 ppm/°C | ppm/°C (A Grade) | ||
| Temperature Coefficient | TCVO | 3 ppm/°C | ppm/°C (B Grade) | ||
| Supply Voltage Operating Range | VIN | 6.1 V | 18 V | V | |
| Supply Voltage Headroom | VIN - VOUT | 2 V | V | ||
| Output Current Capacity | +30 mA (source), -20 mA (sink) | mA | |||
| Operating Temperature Range | TA | -40°C | +125°C | °C |
Key Features
- Low noise: 3.5 µV p-p @ 2.5 V output (0.1 Hz to 10.0 Hz)
- No external capacitor required
- High accuracy and low temperature coefficient: 10 ppm/°C (A Grade), 3 ppm/°C (B Grade)
- Wide operating range: 6.1 V to 18 V
- Low supply voltage headroom: 2 V
- High output current capability: +30 mA source, -20 mA sink
- Trim terminal to adjust output voltage over a ±0.5% range without compromising performance
- Available in 8-lead MSOP and 8-lead narrow SOIC packages
Applications
- Precision data acquisition systems
- High resolution data converters
- Medical instruments
- Industrial process control systems
- Optical control circuits
- Precision instruments
Q & A
- What is the output voltage of the ADR434ARMZ?
The output voltage of the ADR434ARMZ is 4.096 V, with a tolerance of ±5 mV for A Grade and ±1.5 mV for B Grade.
- What is the operating temperature range of the ADR434ARMZ?
The operating temperature range is from -40°C to +125°C.
- What is the supply voltage headroom required for the ADR434ARMZ?
The supply voltage headroom required is 2 V.
- Can the ADR434ARMZ source and sink current?
- Does the ADR434ARMZ require an external capacitor?
No, it does not require an external capacitor.
- What are the available package types for the ADR434ARMZ?
- What is the temperature coefficient of the ADR434ARMZ?
- What are some typical applications of the ADR434ARMZ?
- Does the ADR434ARMZ have a trim feature?
- What is the noise performance of the ADR434ARMZ?
