Overview
The AD7740YRM-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 environments. 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 | Conditions |
|---|---|---|
| Supply Voltage (VDD) | 3.0 V to 3.6 V or 4.75 V to 5.25 V | |
| Current Consumption (IDD) | 0.9 mA (typ) at 3.3 V, 1.25 mA (max) at 5 V | |
| Input Voltage Range (VIN) | 0 to VREF | |
| Reference Voltage Range (VREF) | 2.5 V to VDD | |
| Maximum Input Frequency | 1 MHz | |
| Output High Voltage (VOH) | 4.0 V at VDD = 5 V, 2.1 V at VDD = 3.3 V | |
| Output Low Voltage (VOL) | 0.1 V to 0.4 V | |
| Operating Temperature Range | –40°C to +105°C (Y Grade), 0°C to +85°C (K Grade) |
Key Features
- Synchronous operation with full-scale frequency set by an external system clock.
- Low power consumption: typically 3 mW.
- Internal 2.5 V reference voltage.
- Minimal external components required.
- True bipolar operation with input voltage range extending 150 mV below GND.
- Automatic power-down function.
- No external resistors or capacitors needed to set the output frequency.
- High impedance buffered input.
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 AD7740YRM-REEL7?
The AD7740YRM-REEL7 operates from a single supply voltage of 3.0 V to 3.6 V or 4.75 V to 5.25 V.
- What are the typical current consumption values for the AD7740YRM-REEL7?
The typical current consumption is 0.9 mA at 3.3 V and 1.25 mA at 5 V.
- What is the maximum input frequency for the AD7740YRM-REEL7?
The maximum input frequency is 1 MHz.
- Does the AD7740YRM-REEL7 require external resistors or capacitors to set the output frequency?
No, the AD7740YRM-REEL7 does not require external resistors or capacitors to set the output frequency.
- What are the operating temperature ranges for the AD7740YRM-REEL7?
The operating temperature range is –40°C to +105°C for the Y Grade and 0°C to +85°C for the K Grade.
- What are some common applications of the AD7740YRM-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.
- Does the AD7740YRM-REEL7 support true bipolar operation?
- What is the power consumption of the AD7740YRM-REEL7?
The power consumption is typically 3 mW.
- What package types are available for the AD7740YRM-REEL7?
The AD7740YRM-REEL7 is available in 8-lead SOT-23 and 8-lead MSOP packages.
- Does the AD7740YRM-REEL7 have an automatic power-down function?
