Overview
The AD7983BRMZ is a 16-bit, successive approximation, analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC operates from a single power supply, VDD, and features a low power, high speed, 16-bit sampling ADC along with a versatile serial interface port. It samples an analog input IN+ between 0 V to REF with respect to a ground sense IN−, where the reference voltage, REF, can be set independently of the supply voltage, VDD. The AD7983 is housed in a 10-lead MSOP or a 10-lead LFCSP package and operates over a wide temperature range from −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 | - | - | Bits |
| Analog Input Voltage Range (IN+ - IN−) | 0 | - | VREF | V |
| Absolute Input Voltage (IN+) | -0.1 VREF | - | +0.1 VREF | V |
| Absolute Input Voltage (IN−) | -0.1 | - | +0.1 | V |
| Common Mode Rejection Ratio (CMRR) at fIN = 100 kHz | 60 | - | - | dB |
| Leakage Current at 25°C (Acquisition phase) | 1 | - | - | nA |
| Signal-to-(Noise + Distortion) Ratio (SINAD) at fIN = 10 kHz | 91.6 | - | - | dB |
| Power Dissipation at 1.33 MSPS throughput | 10.5 | - | 12 | mW |
| Energy per Conversion | 7.9 | - | - | nJ/sample |
| Temperature Range | -40 | - | +85 | °C |
| Conversion Time (CNV Rising Edge to Data Available) | 300 | 500 | - | ns |
| Acquisition Time | 250 | - | - | ns |
| Time Between Conversions | 750 | - | - | ns |
Key Features
- 16-bit successive approximation ADC with high speed and low power consumption.
- Operates from a single power supply, VDD, with a separate supply VIO for digital interface compatibility (1.8 V, 2.5 V, 3 V, or 5 V).
- External reference voltage, REF, can be set independently of VDD.
- SPI-compatible serial interface with daisy-chain capability and optional busy indicator.
- Wide operating temperature range: −40°C to +85°C.
- Housed in 10-lead MSOP or 10-lead LFCSP packages.
Applications
- Automated test equipment.
- Data acquisition systems.
- Medical instruments.
- Machine automation.
Q & A
- What is the resolution of the AD7983 ADC?
The AD7983 is a 16-bit ADC.
- What is the operating temperature range of the AD7983?
The AD7983 operates from −40°C to +85°C.
- What types of packages are available for the AD7983?
The AD7983 is available in 10-lead MSOP and 10-lead LFCSP packages.
- Can the AD7983 be daisy-chained with other ADCs?
- What is the power consumption of the AD7983 at 1.33 MSPS throughput?
The power dissipation is between 10.5 mW and 12 mW at 1.33 MSPS throughput.
- What is the energy per conversion for the AD7983?
The energy per conversion is 7.9 nJ/sample.
- What is the conversion time of the AD7983?
The conversion time from the CNV rising edge to data available is between 300 ns and 500 ns.
- Can the AD7983 be used in medical instruments?
- What is the common mode rejection ratio (CMRR) of the AD7983 at 100 kHz?
The CMRR at 100 kHz is 60 dB.
- How does the power consumption of the AD7983 scale with throughput?
The power consumption of the AD7983 scales linearly with throughput.
