Overview
The ADC12J4000NKET is a 12-bit, 4.0 GSPS (giga-samples per second) RF sampling analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed for wideband sampling and digital tuning, enabling the direct sampling of a large block of frequency spectrum at RF frequencies. It features an integrated Digital Down Converter (DDC) that provides digital filtering and down-conversion, making the selected frequency block available on a JESD204B serial interface. The ADC12J4000NKET operates over an industrial temperature range of –40°C to 85°C and is packaged in a 68-pin VQFN package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Max Sampling Rate | 4000 | MSPS |
| Min Sampling Rate | 1000 | MSPS |
| DDC Output Word Size | 15-Bit Complex (30 bits total) | |
| Bypass Output Word Size | 12-Bit Offset Binary | |
| Noise Floor | −149 dBFS/Hz or −150.8 dBm/Hz | |
| IMD3 | −64 dBc (FIN = 2140 MHz ± 30 MHz at −13 dBFS) | |
| FPBW (–3 dB) | 3.2 GHz | |
| Peak NPR | 46 dB | |
| Supply Voltages | 1.9 V and 1.2 V | |
| Power Consumption (Bypass at 4000 MSPS) | 2 W | |
| Power Consumption (Decimate by 10 at 4000 MSPS) | 2 W | |
| Power Down Mode | <50 mW | |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Type | 68-pin VQFN |
Key Features
- Excellent noise and linearity up to and beyond FIN = 3 GHz
- Configurable DDC with decimation factors from 4 to 32 (Complex Baseband Out)
- Usable output bandwidth of 800 MHz at 4x decimation and 4000 MSPS, and 100 MHz at 32x decimation and 4000 MSPS
- Bypass mode for full Nyquist output bandwidth
- Low pin-count JESD204B Subclass 1 interface
- Automatically optimized output lane count
- Embedded low latency signal range indication
- Low power consumption
Applications
- Wireless Infrastructure
- RF-Sampling Software Defined Radio
- Wideband Microwave Backhaul
- Military Communications
- SIGINT (Signals Intelligence)
- RADAR and LIDAR
- DOCSIS / Cable Infrastructure
- Test and Measurement
Q & A
- What is the maximum sampling rate of the ADC12J4000NKET?
The maximum sampling rate is 4000 MSPS.
- What is the minimum sampling rate of the ADC12J4000NKET?
The minimum sampling rate is 1000 MSPS.
- What is the output word size in DDC mode?
The DDC output word size is 15-Bit Complex (30 bits total).
- What is the bypass output word size?
The bypass output word size is 12-Bit Offset Binary.
- What is the noise floor of the ADC12J4000NKET?
The noise floor is −149 dBFS/Hz or −150.8 dBm/Hz.
- What is the IMD3 (Third-order Intermodulation Distortion) of the ADC12J4000NKET?
The IMD3 is −64 dBc (FIN = 2140 MHz ± 30 MHz at −13 dBFS).
- What is the FPBW (–3 dB) of the ADC12J4000NKET?
The FPBW (–3 dB) is 3.2 GHz.
- What are the supply voltages for the ADC12J4000NKET?
The supply voltages are 1.9 V and 1.2 V.
- What is the power consumption in bypass mode at 4000 MSPS?
The power consumption in bypass mode at 4000 MSPS is 2 W.
- What is the operating temperature range of the ADC12J4000NKET?
The operating temperature range is –40°C to 85°C.
