Overview
The AD7740YRTZ-REEL7, produced by Analog Devices Inc., is a low-cost, ultrasmall synchronous Voltage-to-Frequency Converter (VFC). This device is designed for applications requiring efficient and compact analog-to-digital conversion. It operates from a single supply voltage of 3.0 V to 3.6 V or 4.75 V to 5.25 V, making it versatile for various power requirements. The AD7740 is available in 8-lead SOT-23 and 8-lead MSOP packages, offering significant space savings over alternative solutions.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage (VDD) | 3.0 V to 3.6 V or 4.75 V to 5.25 V |
| Current Consumption (IDD) | Typically 0.9 mA (unbuffered input) |
| Input Voltage Range | 0 to VREF, with true –150 mV capability below GND |
| Internal Reference Voltage | 2.5 V |
| Maximum Input Frequency | 1 MHz |
| Output Frequency | Set by external system clock |
| Package Types | 8-lead SOT-23, 8-lead MSOP |
| Operating Temperature Range | –40°C to +105°C (Y Grade), 0°C to +85°C (K Grade) |
| Power Consumption | Typically 3 mW |
Key Features
- Synchronous operation with full-scale frequency set by external system clock.
- Low power consumption: typically 3 mW.
- No external resistors or capacitors required to set the output frequency.
- Internal 2.5 V reference voltage.
- Selectable high impedance buffered input.
- Minimal external components required.
- Automatic power-down function.
- True bipolar operation with input voltage range extending 150 mV below GND.
Applications
- Isolation of high common-mode voltages.
- Low-cost analog-to-digital conversion.
- Battery monitoring.
- Automotive sensing.
- Isolated analog signal transmission applications.
Q & A
- What is the supply voltage range for the AD7740YRTZ-REEL7? The AD7740YRTZ-REEL7 operates from a single supply voltage of 3.0 V to 3.6 V or 4.75 V to 5.25 V.
- What is the typical current consumption of the AD7740YRTZ-REEL7? The typical current consumption is 0.9 mA when the input is unbuffered.
- What is the input voltage range for the AD7740YRTZ-REEL7? The input voltage range is 0 to VREF, with true –150 mV capability below GND.
- Does the AD7740YRTZ-REEL7 require external components to set the output frequency? No, the AD7740YRTZ-REEL7 does not require external resistors or capacitors to set the output frequency.
- What are the package types available for the AD7740YRTZ-REEL7? The AD7740YRTZ-REEL7 is available in 8-lead SOT-23 and 8-lead MSOP packages.
- What is the operating temperature range for the AD7740YRTZ-REEL7? The operating temperature range is –40°C to +105°C (Y Grade) and 0°C to +85°C (K Grade).
- What is the maximum input frequency for the AD7740YRTZ-REEL7? The maximum input frequency is 1 MHz.
- Does the AD7740YRTZ-REEL7 have an automatic power-down function? Yes, the AD7740YRTZ-REEL7 has an automatic power-down function.
- What are some common applications of the AD7740YRTZ-REEL7? Common applications include isolation of high common-mode voltages, low-cost analog-to-digital conversion, battery monitoring, automotive sensing, and isolated analog signal transmission.
- How does the AD7740YRTZ-REEL7 handle bipolar input voltages? The AD7740YRTZ-REEL7 can handle input voltages extending 150 mV below GND, allowing for true bipolar operation.
