Overview
The TLV2548IPWR is a high-performance, 12-bit, low-power analog-to-digital converter (ADC) produced by Texas Instruments. This device operates from a single 2.7-V to 5.5-V power supply and features a 4-wire SPI interface, making it compatible with most host microprocessors. The TLV2548IPWR includes an on-chip analog multiplexer that can select any of the eight analog inputs or one of three internal self-test voltages. It also supports extended sampling periods and various conversion modes, including single shot, repeat, sweep, and repeat sweep modes. The device is characterized for operation from −40°C to 85°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 12 bits |
| Conversion Time | 3.86 µs (typical) |
| Power Supply | 2.7 V to 5.5 V |
| Interface | 4-wire SPI |
| Analog Inputs | 8 channels |
| Internal Reference Voltages | 2 V or 4 V |
| Conversion Clock Source | Internal OSC or external SCLK |
| Operating Temperature | −40°C to 85°C |
| Package | 20-TSSOP (PW) |
Key Features
- High-speed A/D conversion with up to 2.8 µs conversion time using a 20 MHz SCLK.
- Low power consumption with software, hardware, and auto-power-down modes.
- Programmable conversion speeds and sampling periods (short or long sampling).
- On-chip analog multiplexer for selecting analog inputs or internal self-test voltages.
- Support for extended sampling periods controlled by the CSTART pin.
- Flexible configuration options through a 12-bit configuration register (CFR).
- Four different conversion modes: single shot, repeat, sweep, and repeat sweep.
- 3-state serial output (SDO) for A/D conversion results.
Applications
- Industrial automation and control systems.
- Medical devices requiring high precision and low power consumption.
- Aerospace and defense applications where reliability and performance are critical.
- Automotive systems, including sensor interfaces and data acquisition.
- High-performance signal processing and data acquisition systems.
Q & A
- What is the resolution of the TLV2548IPWR ADC?
The TLV2548IPWR has a 12-bit resolution.
- What is the typical conversion time of the TLV2548IPWR?
The typical conversion time is 3.86 µs.
- What is the power supply range for the TLV2548IPWR?
The device operates from a single 2.7-V to 5.5-V power supply.
- What type of interface does the TLV2548IPWR use?
The device uses a 4-wire SPI interface.
- How many analog input channels does the TLV2548IPWR have?
The device has 8 analog input channels.
- What are the available internal reference voltages for the TLV2548IPWR?
The available internal reference voltages are 2 V and 4 V.
- Can the TLV2548IPWR use an external reference voltage?
- What are the different conversion modes supported by the TLV2548IPWR?
The device supports single shot, repeat, sweep, and repeat sweep conversion modes.
- How is the sampling period controlled in the TLV2548IPWR?
The sampling period can be controlled using the CSTART pin for extended sampling or programmed as short (12 SCLKs) or long (24 SCLKs) sampling periods.
- What is the operating temperature range for the TLV2548IPWR?
The device is characterized for operation from −40°C to 85°C.
