Overview
The TLV2548IDWR 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 conversion time of 3.86 µs. It is part of the TLV2548 and TLV2544 family, designed for low power consumption and high-speed conversion. The TLV2548IDWR includes an on-chip analog multiplexer, built-in conversion clock, and reference, as well as a 4-wire SPI-compatible serial interface. It is suitable for various applications requiring precise and efficient analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Maximum Throughput | 200 KSPS |
| Conversion Time | 3.86 µs |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Analog Input Range | 0 V to Supply Voltage |
| Operating Temperature Range | -40°C to 85°C (TLV2548I) |
| Package Type | 20-pin SOIC (DW) |
| Signal-to-Noise and Distortion Ratio (SNDR) | 70 dB, fi = 12 kHz |
| Spurious Free Dynamic Range (SFDR) | 75 dB, fi = 12 kHz |
| Serial Interface | SPI (CPOL = 0, CPHA = 0), up to 20 MHz SCLK |
| Power Consumption | 1.0 mA at 3.3 V, 1.1 mA at 5.5 V (with external reference) |
| Power-Down Modes | Software, Hardware, Auto Power-Down (1 µA max) |
Key Features
- Built-in reference, conversion clock, and 8× FIFO
- Differential/Integral Nonlinearity Error: ±1 LSB
- Hardware controlled and programmable sampling period
- Programmable auto-channel sweep
- Low operating current with power-down modes (software, hardware, autopower-down)
- SPI (CPOL = 0, CPHA = 0)/DSP-compatible serial interfaces with SCLK up to 20 MHz
- On-chip analog multiplexer with selection of analog inputs or internal self-test voltages
- Optional external reference for maximum flexibility
Applications
The TLV2548IDWR is suitable for a variety of applications that require high-speed, low-power analog-to-digital conversion. These include:
- Industrial automation and control systems
- Medical devices and diagnostic equipment
- Aerospace and defense systems
- Automotive systems, especially those requiring high reliability and low power consumption
- High-performance signal processing and data acquisition systems
Q & A
- What is the resolution of the TLV2548IDWR ADC?
The TLV2548IDWR has a resolution of 12 bits.
- What is the maximum throughput of the TLV2548IDWR?
The maximum throughput is 200 KSPS.
- What is the operating voltage range of the TLV2548IDWR?
The device operates from a single 2.7-V to 5.5-V power supply.
- What types of power-down modes are available on the TLV2548IDWR?
The device features software, hardware, and autopower-down modes.
- Can the TLV2548IDWR use an external reference voltage?
Yes, the device can use an optional external reference voltage for maximum flexibility.
- What is the operating temperature range for the TLV2548I?
The operating temperature range is -40°C to 85°C.
- What type of serial interface does the TLV2548IDWR support?
The device supports SPI (CPOL = 0, CPHA = 0) and DSP-compatible serial interfaces with SCLK up to 20 MHz.
- How does the TLV2548IDWR manage power consumption?
The device has low operating current and features power-saving modes, including software, hardware, and autopower-down modes.
- What is the purpose of the on-chip analog multiplexer in the TLV2548IDWR?
The on-chip analog multiplexer allows the selection of any analog inputs or one of three internal self-test voltages.
- Can the sampling period be programmed on the TLV2548IDWR?
Yes, the sampling period can be programmed as short (12 SCLKs) or long (24 SCLKs) to accommodate different SCLK operations.
