Overview
The TLV5638QDG4, produced by Texas Instruments, is a dual 12-bit voltage output Digital-to-Analog Converter (DAC) designed for low-power 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 Class AB output stage, which enhances stability and reduces settling time. It operates on a single supply voltage from 2.7 V to 5.5 V and is available in an 8-pin SOIC package, making it suitable for various temperature ranges including commercial, industrial, and automotive environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 | - | - | bits |
| Supply Voltage (VDD) | 2.7 | 3/5 | 5.5 | V |
| Operating Temperature Range | -40 | - | 125 | °C |
| Settling Time | 1 µs (Fast Mode) | - | 3.5 µs (Slow Mode) | µs |
| Differential Nonlinearity | - | <0.5 LSB | - | LSB |
| Reference Voltage (Internal) | 1.024 | 2.048 | - | V |
| Output Source Current (Reference) | - | 1 | - | mA |
| Load Resistance | - | - | 10 kΩ | kΩ |
| Load Capacitance | - | - | 100 pF | pF |
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.
- 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.
- Operates in various temperature ranges including commercial, industrial, automotive, and military.
- Differential nonlinearity < 0.5 LSB typical and monotonic over temperature.
- On-chip programmable precision voltage reference that can source up to 1 mA.
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 TLV5638QDG4 DAC?
The TLV5638QDG4 has a resolution of 12 bits.
- What are the operating voltage ranges for the TLV5638QDG4?
The device operates on a single supply voltage from 2.7 V to 5.5 V.
- What are the settling times available for the TLV5638QDG4?
The settling times are 1 µs in Fast Mode and 3.5 µs in Slow Mode.
- Is the TLV5638QDG4 compatible with various serial interfaces?
Yes, it is compatible with TMS320, SPI, QSPI, and Microwire serial ports.
- What is the typical differential nonlinearity of the TLV5638QDG4?
The differential nonlinearity is less than 0.5 LSB typical.
- Can the TLV5638QDG4 be used as a system reference?
Yes, the on-chip programmable precision voltage reference can source up to 1 mA and be used as a system reference.
- What are the package options available for the TLV5638QDG4?
The device is available in an 8-pin SOIC package, as well as JG and FK packages for military temperature ranges.
- What are some common applications of the TLV5638QDG4?
Common applications include digital servo control loops, digital offset and gain adjustment, industrial process control, machine and motion control devices, and mass storage devices.
- What is the maximum load resistance recommended for the TLV5638QDG4?
The maximum load resistance is 10 kΩ.
- What is the maximum load capacitance recommended for the TLV5638QDG4?
The maximum load capacitance is 100 pF.
