Overview
The AD9246BCPZRL7-125 is a high-performance, monolithic, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. It operates from a single 1.8 V power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families. This ADC is designed with a multistage differential pipeline architecture and includes an on-chip voltage reference and a high-performance sample-and-hold amplifier (SHA). The AD9246 ensures 14-bit accuracy at data rates of up to 125 MSPS and guarantees no missing codes over the full operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Sampling Rate | 80 MSPS / 105 MSPS / 125 MSPS | |
| Analog Supply Voltage | 1.8 V | V |
| Digital Output Supply Voltage | 1.8 V to 3.3 V | V |
| Signal-to-Noise Ratio (SNR) | 71.7 dBc (72.7 dBFS) to 70 MHz input | dBc (dBFS) |
| Spurious Free Dynamic Range (SFDR) | 85 dBc to 70 MHz input | dBc |
| Power Consumption | 395 mW @ 125 MSPS | mW |
| Analog Input Bandwidth | 650 MHz | MHz |
| Differential Nonlinearity (DNL) | ±0.4 LSB | LSB |
| Analog Input Range | 1 V p-p to 2 V p-p | V p-p |
| Package Type | 48-Lead LFCSP_VQ | |
| Operating Temperature Range | −40°C to +85°C | °C |
Key Features
- High-performance sample-and-hold amplifier (SHA) with 650 MHz bandwidth.
- On-chip voltage reference and multistage differential pipeline architecture with output error correction logic.
- Flexible analog input: 1 V p-p to 2 V p-p range, suitable for single-ended and differential applications.
- Data output formats: offset binary, Gray code, or twos complement.
- Clock duty cycle stabilizer (DCS) and data output clock (DCO) for proper latch timing.
- Serial port control for various product features and functions, including power-down and voltage reference mode.
- Built-in selectable digital test pattern generation and programmable clock and data alignment.
- Pin-compatible with the AD9233, allowing easy migration from 12 bits to 14 bits.
Applications
- Ultrasound equipment.
- IF sampling in communications receivers (e.g., IS-95, CDMA-One, IMT-2000).
- Battery-powered instruments.
- Hand-held scopemeters.
- Low-cost digital oscilloscopes.
- Communications, imaging, and medical ultrasound applications.
Q & A
- What is the resolution and sampling rate of the AD9246BCPZRL7-125?
The AD9246BCPZRL7-125 has a resolution of 14 bits and can operate at sampling rates of 80 MSPS, 105 MSPS, or 125 MSPS.
- What is the power supply requirement for the AD9246BCPZRL7-125?
The AD9246BCPZRL7-125 operates from a single 1.8 V analog supply and has a separate digital output driver supply that can accommodate 1.8 V to 3.3 V logic families.
- What are the key features of the sample-and-hold amplifier (SHA) in the AD9246BCPZRL7-125?
The SHA has a bandwidth of 650 MHz, maintains excellent performance for input frequencies up to 225 MHz, and supports various user-selectable input ranges and offsets.
- What data output formats are supported by the AD9246BCPZRL7-125?
The AD9246BCPZRL7-125 supports offset binary, Gray code, and twos complement data formats.
- What is the purpose of the clock duty cycle stabilizer (DCS) in the AD9246BCPZRL7-125?
The clock DCS maintains overall ADC performance over a wide range of clock pulse widths.
- How does the AD9246BCPZRL7-125 support digital test patterns and clock/data alignment?
The AD9246BCPZRL7-125 has built-in selectable digital test pattern generation and programmable clock and data alignment features.
- What is the operating temperature range of the AD9246BCPZRL7-125?
The operating temperature range is −40°C to +85°C.
- What package type is the AD9246BCPZRL7-125 available in?
The AD9246BCPZRL7-125 is available in a 48-Lead LFCSP_VQ package.
- Is the AD9246BCPZRL7-125 pin-compatible with other ADC models?
Yes, it is pin-compatible with the AD9233, allowing a simple migration from 12 bits to 14 bits.
- What are some typical applications of the AD9246BCPZRL7-125?
Typical applications include ultrasound equipment, IF sampling in communications receivers, battery-powered instruments, hand-held scopemeters, and low-cost digital oscilloscopes.
