Overview
The TLV5638QD, produced by Texas Instruments, is a dual 12-bit voltage output Digital-to-Analog Converter (DAC) designed for a wide range of applications. It features a flexible 3-wire serial interface compatible with TMS320, SPI™, QSPI™, and Microwire™ serial ports. This DAC is programmed using a 16-bit serial string containing 4 control and 12 data bits. The device includes a programmable internal reference and a programmable settling time, allowing designers to optimize between speed and power dissipation. Implemented with a CMOS process, the TLV5638QD operates on a single supply voltage from 2.7 V to 5.5 V and is available in various packages, including 8-pin SOIC, to suit different temperature ranges.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | bits |
| Settling Time | 1 µs (Fast Mode), 3.5 µs (Slow Mode) | µs |
| Differential Nonlinearity | < 0.5 LSB (Typ) | LSB |
| Integral Nonlinearity | ±1.7 to ±6 LSB | LSB |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Operating Temperature Range | -40°C to 125°C (Q suffix) | °C |
| Package | 8-pin SOIC, JG, FK | |
| Reference Voltage | 1.024 V to 2.048 V | V |
| Output Current Capability | Up to 1 mA | mA |
Key Features
- Dual 12-bit voltage output DAC with a flexible 3-wire serial interface.
- Programmable internal reference and settling time (1 µs in Fast Mode, 3.5 µs in Slow Mode).
- Compatible with TMS320, SPI™, QSPI™, and Microwire™ serial ports.
- Differential nonlinearity < 0.5 LSB (Typ) and monotonic over temperature.
- On-chip programmable precision voltage reference that can source up to 1 mA.
- 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, JG, and FK packages for various temperature ranges.
Applications
- Digital servo control loops.
- Digital offset and gain adjustment.
- Industrial process control.
- Machine and motion control devices.
- Mass storage devices.
Q & A
- What is the resolution of the TLV5638QD DAC?
The TLV5638QD has a resolution of 12 bits.
- What are the programmable settling times for the TLV5638QD?
The settling times are 1 µs in Fast Mode and 3.5 µs in Slow Mode.
- What serial interfaces is the TLV5638QD compatible with?
The TLV5638QD is compatible with TMS320, SPI™, QSPI™, and Microwire™ serial ports.
- What is the differential nonlinearity of the TLV5638QD?
The differential nonlinearity is less than 0.5 LSB (Typ).
- What is the operating temperature range for the TLV5638QD?
The operating temperature range is -40°C to 125°C for the Q suffix.
- What are the available packages for the TLV5638QD?
The device is available in 8-pin SOIC, JG, and FK packages.
- What is the supply voltage range for the TLV5638QD?
The supply voltage range is from 2.7 V to 5.5 V.
- Can the internal reference of the TLV5638QD be used as a system reference?
Yes, the internal reference can source up to 1 mA and can be used as a system reference.
- What are some common applications of the TLV5638QD?
Common applications include digital servo control loops, digital offset and gain adjustment, industrial process control, machine and motion control devices, and mass storage devices.
- How is the TLV5638QD programmed?
The TLV5638QD is programmed using a 16-bit serial string containing 4 control and 12 data bits.
