Overview
The ADADC84Z-12, produced by Analog Devices Inc., is a high-speed, 12-bit successive approximation analog-to-digital converter (ADC). This device is part of the ADADC84/ADADC85 series, known for its fast conversion rates, low power consumption, and high reliability. The ADADC84Z-12 integrates an internal clock, reference, and comparator, making it a complete ADC solution that requires no external components for operation. It is particularly suited for applications demanding high system throughput rates and precision analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Conversion Time | 10 µs (typical) |
| Analog Input Range | ±2.5 V, ±5 V, ±10 V (depending on configuration) |
| Reference Voltage | 6.3 V ±0.1% (internal, laser-trimmed) |
| Gain Temperature Coefficient | 10 ppm/°C (typical) |
| Max Nonlinearity | ±0.012% |
| Power Dissipation | 880 mW (typical) |
| Operating Temperature Range | 0°C to +70°C (commercial), –55°C to +125°C (military) |
| Package Type | Hybrid IC with MSI digital and linear monolithic chips |
Key Features
- Complete 12-bit ADC with internal clock, reference, and comparator.
- Fast successive approximation conversion: 10 µs or 5 µs.
- Buried Zener reference for long-term stability and low gain temperature coefficient.
- Low power consumption: 880 mW typical.
- High reliability and small size due to integrated package construction.
- Monotonic operation of the feedback DAC ensures no missing codes over the specified temperature ranges.
- Industry-standard pinout and negative true parallel logic outputs.
- Precision +6.3 V reference available externally.
Applications
The ADADC84Z-12 is versatile and can be used in a variety of applications, including:
- High-speed data acquisition systems.
- Aerospace and severe environment applications due to its guaranteed performance from –55°C to +125°C.
- Industrial control systems requiring precise and fast analog-to-digital conversion.
- Medical devices where high reliability and low power consumption are critical.
- Automotive systems that demand robust and high-performance ADCs.
Q & A
- What is the resolution of the ADADC84Z-12?
The ADADC84Z-12 has a resolution of 12 bits. - How long does the ADADC84Z-12 take to convert an analog signal to digital?
The conversion time is typically 10 µs. - What is the range of the analog input for the ADADC84Z-12?
The analog input range can be ±2.5 V, ±5 V, or ±10 V depending on the configuration. - Does the ADADC84Z-12 have an internal reference voltage?
Yes, it has an internal buried Zener reference voltage of 6.3 V ±0.1%. - What is the maximum nonlinearity of the ADADC84Z-12?
The maximum nonlinearity is ±0.012%. - How much power does the ADADC84Z-12 typically consume?
The typical power dissipation is 880 mW. - What are the operating temperature ranges for the ADADC84Z-12?
The operating temperature ranges are 0°C to +70°C (commercial) and –55°C to +125°C (military). - Is the ADADC84Z-12 suitable for aerospace applications?
Yes, it is suitable for aerospace and severe environment applications due to its guaranteed performance over a wide temperature range. - Does the ADADC84Z-12 have any special features for reliability?
Yes, it has a hybrid IC design with MSI digital and linear monolithic chips, ensuring high reliability and small size. - Is the ADADC84Z-12 available with environmental screening?
Yes, the ADADC85S version, which is part of the same series, is available with environmental screening.
