Overview
The TLV5638IDRG4 is a dual 12-bit voltage output Digital-to-Analog Converter (DAC) produced by Texas Instruments. It features a flexible 3-wire serial interface compatible with TMS320, SPI™, QSPI™, and Microwire™ serial ports. This device is designed for single supply operation from 2.7 V to 5.5 V and is available in an 8-pin SOIC package, making it suitable for applications where board space is limited. The TLV5638IDRG4 is ideal for various industrial, commercial, and automotive applications due to its wide operating temperature range.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD to AGND) | 2.7 | 3/5 | 5.5 | V |
| Reference Input Voltage Range | -0.3 | - | VDD + 0.3 | V |
| Digital Input Voltage Range | -0.3 | - | VDD + 0.3 | V |
| Operating Free-Air Temperature Range | -40 | - | 85 | °C |
| Resolution | 12 | - | - | bits |
| Differential Nonlinearity | ±0.4 | - | ±1 | LSB |
| Integral Nonlinearity | ±1.7 | - | ±6 | LSB |
| Zero-Scale Error | ±24 | - | - | mV |
| Gain Error | ±0.6 | - | - | % full scale |
| Output Voltage Range | 0 | - | VDD - 0.4 | V |
| Load Resistance | 2 | - | - | kΩ |
| Load Capacitance | 100 | - | - | pF |
| Clock Frequency | - | - | 20 | MHz |
Key Features
- Flexible 3-wire serial interface compatible with TMS320, SPI™, QSPI™, and Microwire™ serial ports.
- Dual 12-bit voltage output DAC with a resistor string architecture.
- Programmable settling time to optimize speed vs power dissipation.
- On-chip programmable precision voltage reference (1.024 V or 2.048 V).
- Rail-to-rail output buffer with a Class AB output stage for improved stability and reduced settling time.
- Single supply operation from 2.7 V to 5.5 V.
- Available in 8-pin SOIC package for reduced board space.
- Operating temperature ranges: -40°C to 85°C (TLV5638I), and -55°C to 125°C (TLV5638M) for military temperature range.
- Low power consumption with fast and slow modes.
- Power-down feature to reduce power consumption when not in use.
Applications
- Digital servo control loops.
- Digital offset and gain adjustment.
- Industrial process control.
- Machine and motion control devices.
- Mass storage devices.
- Automotive and commercial applications requiring precise analog output control.
Q & A
- What is the resolution of the TLV5638IDRG4 DAC?
The TLV5638IDRG4 has a resolution of 12 bits.
- What is the operating voltage range of the TLV5638IDRG4?
The device operates from 2.7 V to 5.5 V.
- What types of serial interfaces does the TLV5638IDRG4 support?
The TLV5638IDRG4 supports TMS320, SPI™, QSPI™, and Microwire™ serial interfaces.
- What is the maximum clock frequency for the serial interface?
The maximum clock frequency is 20 MHz.
- Does the TLV5638IDRG4 have an on-chip voltage reference?
- What is the output voltage range of the TLV5638IDRG4?
The output voltage range is from 0 V to VDD - 0.4 V.
- Can the TLV5638IDRG4 be used in automotive applications?
- What are the key benefits of the rail-to-rail output buffer in the TLV5638IDRG4?
The rail-to-rail output buffer features a Class AB output stage, which improves stability and reduces settling time.
- How does the power-down feature work in the TLV5638IDRG4?
The power-down feature reduces power consumption when the device is not in use, controlled by the PWR bit in the control register.
- What are the typical applications of the TLV5638IDRG4?
Typical applications include digital servo control loops, industrial process control, machine and motion control devices, and mass storage devices.
