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AD7705BN
+Lista de MateriaisIC ADC 16BIT SIGMA-DELTA 16DIP
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FabricanteAnalog Devices Inc.
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Peça do Fabricante #AD7705BN
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Pacote PDIP-16
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Especificações
| Atributo | Valor |
| Package / Case | Tube,Tube |
| Part Status | Obsolete |
| Number of Bits | 16 |
| Sampling Rate(Per Second) | 500 |
| Number of Inputs | 2 |
| Input Type | Differential |
| Data Interface | SPI, DSP |
| Configuration | MUX-PGA-ADC |
| Number of A/D Converters | 1 |
| Architecture | Sigma-Delta |
| Reference Type | External |
| Voltage - Supply, Analog | 2.7V ~ 3.3V, 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.3V, 5V |
| Features | PGA |
| Operating Temperature | -40°C ~ 85°C |
| Supplier Device Package | 16-PDIP |
Visão Geral
Description
Operating at low power, the AD7705BN is ideal for battery-powered applications. It offers an on-chip digital filter to remove high-frequency noise and a programmable gain amplifier (PGA) that allows configuration for different sensor outputs. Communication with the device is facilitated through a serial interface, compatible with microcontroller-based systems.
The chip operates over a wide voltage range and includes calibration features to ensure measurement accuracy over time and varying environmental conditions. Its small footprint and ease of integration make it a popular choice for designers requiring precise analog-to-digital conversion in compact devices.
Equivalent
Features
1. 16-bit Sigma-Delta ADC: Provides high resolution and accuracy.
2. Low Power Consumption: Suitable for battery-operated devices.
3. Programmable Gain: Offers input ranges from ±10 mV to ±2.56 V.
4. Two-Channel Input: Allows for differential or single-ended operations.
5. Flexible Output Data Rates: Supports programmable output data rates, allowing optimization for different applications.
6. Serial Interface: Comes with an SPI-compatible serial interface, enabling easy integration with microcontrollers.
7. On-Chip Programmable Gain Amplifier: Enhances input signal flexibility.
8. On-Chip Calibration: Features self-calibration and system calibration options to ensure accuracy.
9. Small Package Size: Available in a DIP package, which is convenient for prototyping and testing.
These features make the AD7705BN suitable for precision measurement tasks in various industrial and portable applications.
Pinout
Here's a brief overview of its pin functions:
1. AGND - Analog Ground
2. AVDD - Analog Supply Voltage
3. AIN1(+) / AIN1(-) - Differential Analog Input Channel 1
4. AIN2(+) / AIN2(-) - Differential Analog Input Channel 2
5. REFIN(+) / REFIN(-) - Positive and Negative Reference Voltage Inputs
6. XTAL1 / XTAL2 - Crystal Oscillator Connections
7. MCLK IN - Master Clock Input
8. MCLK OUT - Master Clock Output
9. DGND - Digital Ground
10. DVDD - Digital Supply Voltage
11. DIN - Serial Data Input
12. DOUT - Serial Data Output
13. SCLK - Serial Clock Input
14. CS - Chip Select
15. RESET - Reset Input
16. DRDY - Data Ready Output
These pins allow the AD7705BN to interface with microcontrollers or digital signal processors for precision data conversion applications.
Manufacturer
Application
1. Instrumentation: Used in multimeters and oscilloscopes for accurate data acquisition.
2. Industrial Process Control: Employed in systems requiring precise monitoring and control of variables like temperature, pressure, and flow.
3. Weigh Scales: Ideal for load cell sensor interfacing in digital weighing systems.
4. Data Logging: Suitable for recording environmental and experimental data over time.
5. Medical Devices: Used in diagnostic equipment that needs high-resolution sensor readings.
6. Consumer Electronics: Applied in high-fidelity audio equipment for signal conversion.
These applications leverage the AD7705BN's ability to provide high-resolution and low-noise digital outputs from analog signals.