Overview
The AD7740YRMZ, produced by Analog Devices Inc., is a low-cost, ultra-small synchronous voltage-to-frequency converter (VFC). This component is designed for applications requiring compact size, low power consumption, and ease of use. It operates from a single supply voltage of 3.0 V to 3.6 V or 4.75 V to 5.25 V and consumes typically 0.9 mA when the input is unbuffered. The AD7740YRMZ is available in 8-lead SOT-23 and 8-lead MSOP packages, making it ideal for space-saving designs.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-Lead SOT-23, 8-Lead MSOP |
| Supply Voltage | 3.0 V to 3.6 V or 4.75 V to 5.25 V |
| Current Consumption | Typically 0.9 mA (unbuffered input) |
| Input Type | Single-Ended |
| Input Frequency Range | 0 to 1 MHz |
| Output Frequency Range | 10% to 90% of fCLKIN |
| Operating Temperature Range | -40°C to +105°C (Y Grade), 0°C to +85°C (K Grade) |
| Input Voltage Range (Buffered Mode) | 0.1 V to VDD - 0.2 V |
| Input Voltage Range (Unbuffered Mode) | -0.15 V to VDD + 0.15 V |
| Reference Voltage | Internal 2.5 V bandgap reference, external reference up to VDD |
Key Features
- Synchronous operation with the clock signal on the CLKIN pin
- Full-scale output frequency set by external system clock
- High input impedance in buffered mode
- Automatic power-down function
- No external resistors or capacitors required for setting the output frequency
- True bipolar operation capability without a charge pump
- Low power consumption: 3 mW (typical)
Applications
- Isolation of high common-mode voltages
- Low-cost analog-to-digital conversion
- Battery monitoring
- Automotive sensing
Q & A
- What is the AD7740YRMZ? The AD7740YRMZ is a low-cost, ultra-small synchronous voltage-to-frequency converter (VFC) produced by Analog Devices Inc.
- What are the available package types for the AD7740YRMZ? It is available in 8-lead SOT-23 and 8-lead MSOP packages.
- What is the supply voltage range for the AD7740YRMZ? The supply voltage range is 3.0 V to 3.6 V or 4.75 V to 5.25 V.
- What is the typical current consumption of the AD7740YRMZ? The typical current consumption is 0.9 mA when the input is unbuffered.
- What is the maximum input frequency for the AD7740YRMZ? The maximum input frequency is 1 MHz.
- How is the output frequency of the AD7740YRMZ determined? The output frequency is synchronous with the clock signal on the CLKIN pin and ranges from 10% to 90% of fCLKIN.
- What are the operating temperature ranges for the AD7740YRMZ? The operating temperature ranges are -40°C to +105°C (Y Grade) and 0°C to +85°C (K Grade).
- Does the AD7740YRMZ require external components for setting the output frequency? No, it does not require external resistors or capacitors to set the output frequency.
- What are some common applications of the AD7740YRMZ? Common applications include isolation of high common-mode voltages, low-cost analog-to-digital conversion, battery monitoring, and automotive sensing.
- Can the AD7740YRMZ operate in true bipolar mode? Yes, it can operate in true bipolar mode without a charge pump.
