Overview
The AD7193BCPZ from Analog Devices Inc. is a highly advanced, low-noise, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC) designed for high precision measurement applications. This device serves as a complete analog front end, featuring an on-chip low noise gain stage that allows signals of small amplitude to interface directly with the ADC. It supports four differential inputs or eight pseudo differential inputs and includes an on-chip channel sequencer, enabling simultaneous channel enablement and sequential conversion, which simplifies communication with the device.
The AD7193BCPZ operates with a flexible digital filter, including a fast settling option and a zero latency option. The output data rate can be varied from 4.7 Hz to 4.8 kHz, depending on the filter settings. The device is powered by a supply voltage ranging from 3 V to 5.25 V and consumes a current of 4.65 mA. It is available in 28-lead TSSOP and 32-lead LFCSP packages.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| ADC Output Data Rate | 4.7 | - | 4800 | Hz | Chop disabled |
| Resolution | - | - | 24 Bits | - | No missing codes, sinc4 filter |
| Power Supply Voltage | 3 | - | 5.25 | V | Analog and Digital |
| Current Consumption | - | 4.65 | - | mA | - |
| Package Type | - | - | - | - | 28-lead TSSOP, 32-lead LFCSP |
| Operating Temperature | -40 | - | 105 | °C | - |
Key Features
- Low Noise Performance: The AD7193 features a low noise, 24-bit sigma-delta ADC, making it suitable for high precision measurement applications.
- Flexible Input Configuration: The device can be configured to have four differential inputs or eight pseudo differential inputs.
- On-Chip Channel Sequencer: Allows several channels to be enabled simultaneously, and the AD7193 sequentially converts on each enabled channel, simplifying communication.
- Flexible Digital Filter: Includes a fast settling option and a zero latency option, with variable output data rates from 4.7 Hz to 4.8 kHz.
- Internal or External Clock: The on-chip 4.92 MHz clock can be used, or an external clock or crystal can be employed.
- Low Power Consumption: Operates with a current consumption of 4.65 mA, making it energy-efficient.
Applications
- PLC/DCS Analog Input Modules: Suitable for industrial control systems.
- Data Acquisition: Ideal for precise data acquisition in various environments.
- Strain Gage Transducers: Used in strain measurement applications.
- Pressure Measurement: Employed in pressure sensing applications.
- Temperature Measurement: Used for precise temperature measurements.
- Flow Measurement: Suitable for flow rate measurements.
- Weigh Scales: Used in weight measurement applications).
- Chromatography: Applied in chromatography systems).
- Medical and Scientific Instrumentation: Used in various medical and scientific instruments).
Q & A
- What is the resolution of the AD7193 ADC?
The AD7193 has a resolution of 24 bits.
- What are the available input configurations for the AD7193?
The device can be configured to have four differential inputs or eight pseudo differential inputs.
- What is the range of the output data rate for the AD7193?
The output data rate can be varied from 4.7 Hz to 4.8 kHz, depending on the filter settings.
- Can the AD7193 use an external clock or crystal?
Yes, the AD7193 can use an external clock or crystal in addition to its internal 4.92 MHz clock.
- What is the power supply voltage range for the AD7193?
The power supply voltage range is from 3 V to 5.25 V.
- What is the current consumption of the AD7193?
The device consumes a current of 4.65 mA.
- In what packages is the AD7193 available?
The AD7193 is available in 28-lead TSSOP and 32-lead LFCSP packages.
- What are some common applications of the AD7193?
Common applications include PLC/DCS analog input modules, data acquisition, strain gage transducers, pressure measurement, temperature measurement, flow measurement, weigh scales, chromatography, and medical and scientific instrumentation.
- Does the AD7193 have any specific features for noise reduction?
Yes, the AD7193 features a low noise gain stage and flexible digital filters, including a fast settling option and a zero latency option.
- Is there an evaluation board available for the AD7193?
Yes, the EVAL-AD7193ASDZ evaluation kit is available for the AD7193, which includes software for detailed analysis of the ADC's performance.
