Overview
The ADS805E/1KG4, produced by Texas Instruments, is a 12-bit, 20 MHz pipelined Analog-to-Digital Converter (ADC). This high-performance ADC is designed to offer high dynamic range and excellent signal-to-noise ratio (SNR) performance. It features a high-bandwidth track-and-hold circuit that minimizes harmonics and jitter, ensuring superior spurious performance up to and beyond the Nyquist rate. The ADS805E is pin-compatible with the 10 MHz ADS804 and the 5 MHz ADS803, making it a versatile choice for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | - | 12 Bits | - | - |
| Specified Temperature Range | -40 | - | 85 | °C |
| Sample Rate | 10k | - | 20M | Samples/s |
| Data Latency | - | 6 Clk Cycles | - | - |
| Analog Input Range (Standard Single-Ended) | 1.5 | - | 3.5 | V |
| Analog Input Range (Optional Single-Ended) | 0 | - | 5 | V |
| Power Consumption | - | 300mW | - | mW |
| SNR | - | 68 dB | - | dB |
| SFDR | - | 74 dB at 9.8 MHz fIN | - | dB |
Key Features
- High Dynamic Range: The ADS805E offers high SFDR (Spurious-Free Dynamic Range) of 74 dB at 9.8 MHz input frequency and high SNR (Signal-to-Noise Ratio) of 68 dB.
- Low Power Consumption: It operates with a low power consumption of 300 mW.
- Flexible Input Range: The ADC supports various input ranges, including 1.5 V to 3.5 V and 0 V to 5 V, both single-ended and differential.
- Over-Range Indicator: An over-range flag indicates when the input signal exceeds the converter’s full-scale range.
- Internal or External Reference: The ADS805E can use either an internal reference or an external reference.
- Pin Compatibility: It is pin-compatible with the 10 MHz ADS804 and the 5 MHz ADS803.
Applications
- Studio Cameras: Ideal for high-quality imaging applications.
- IF and Baseband Digitization: Suitable for intermediate frequency and baseband signal processing.
- Copiers: Used in high-resolution scanning and printing systems.
- Test Instrumentation: Employed in various test and measurement equipment due to its high accuracy and dynamic range.
Q & A
- What is the resolution of the ADS805E ADC?
The ADS805E has a resolution of 12 bits.
- What is the maximum sampling rate of the ADS805E?
The maximum sampling rate is 20 MHz.
- What are the available input ranges for the ADS805E?
The ADC supports input ranges of 1.5 V to 3.5 V and 0 V to 5 V, both single-ended and differential.
- Does the ADS805E have an over-range indicator?
- Can the ADS805E use an external reference?
- What is the power consumption of the ADS805E?
- What are some common applications of the ADS805E?
- Is the ADS805E pin-compatible with other ADC models?
- What is the specified temperature range for the ADS805E?
- What is the typical SNR performance of the ADS805E?
