Overview
The ADC14X250RHBR from Texas Instruments is a high-performance, monolithic single-channel analog-to-digital converter (ADC). This device is capable of converting analog input signals into 14-bit digital words at a sampling rate of 250 million samples per second (MSPS). It features a differential pipelined architecture with an integrated input buffer, which enhances dynamic performance and reduces power consumption. The ADC operates across an extended temperature range from –40°C to 105°C and is packaged in a 32-pin, 5-mm × 5-mm WQFN package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 Bits | |
| Conversion Rate | 250 MSPS | |
| Input Frequency Range | Up to 240 MHz | |
| Signal-to-Noise Ratio (SNR) | 70.1 dBFS (at 240 MHz, –3 dBFS) | |
| Noise Spectral Density | –151.1 dBFS/Hz | |
| Spurious Free Dynamic Range (SFDR) | 87 dBFS | |
| Full Scale Range | 1.7 Vpp (differential peak-to-peak) | |
| Input Termination Resistance | 200 Ω (differential) | |
| Input Capacitance | 3.7 pF (differential) | |
| Power Supplies | 1.2 V, 1.8 V, 3.0 V | |
| Operating Temperature Range | –40°C to 105°C | |
| Package Type | 32-pin WQFN (5-mm × 5-mm) |
Key Features
- Integrated Input Buffer: Eliminates charge kickback noise and eases system-level design of the driving amplifier, anti-aliasing filter, and impedance matching.
- Low Power Consumption: Optimized for low power across an extended temperature range.
- JESD204B Output Interface: Provides a single lane interface for high-speed data transfer.
- Adjustable Phase and Amplitude Imbalance Correction: Improves even order harmonic distortion.
- Integrated Low-Noise Voltage Reference: Simplifies board-level design without requiring external decoupling capacitors.
- SPI Configuration: Compatible with 1.2-V to 3-V logic for device configuration).
Applications
- Communications: Suitable for high-speed data conversion in communication systems).
- Instrumentation: Used in portable and other types of instrumentation requiring high precision and speed).
- Radar Systems: Ideal for radar applications due to its high sampling rate and dynamic performance).
Q & A
- What is the resolution of the ADC14X250RHBR?
The ADC14X250RHBR has a resolution of 14 bits).
- What is the maximum sampling rate of the ADC14X250RHBR?
The maximum sampling rate is 250 MSPS).
- What is the signal-to-noise ratio (SNR) of the ADC14X250RHBR at 240 MHz input frequency?
The SNR is 70.1 dBFS at 240 MHz input frequency and –3 dBFS).
- What type of output interface does the ADC14X250RHBR use?
The ADC14X250RHBR uses a JESD204B subclass 1 single lane interface).
- What are the power supply options for the ADC14X250RHBR?
The device operates on 1.2 V, 1.8 V, and 3.0 V power supplies).
- What is the operating temperature range of the ADC14X250RHBR?
The operating temperature range is from –40°C to 105°C).
- What is the package type of the ADC14X250RHBR?
The device is packaged in a 32-pin WQFN (5-mm × 5-mm)).
- Does the ADC14X250RHBR have an integrated input buffer?
Yes, it has an integrated input buffer that eliminates charge kickback noise and eases system-level design).
- How does the ADC14X250RHBR configure its settings?
The device can be configured via a SPI interface compatible with 1.2-V to 3-V logic).
- What are some common applications of the ADC14X250RHBR?
Common applications include communications, instrumentation, and radar systems).
