Overview
The AD9254BCPZ-150 is a high-performance, 14-bit, 150 MSPS analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This monolithic device operates from a single 1.8 V power supply and features a separate digital output driver supply that can accommodate 1.8 V to 3.3 V logic families. The AD9254 uses a multistage differential pipeline architecture with output error correction logic, ensuring 14-bit accuracy at 150 MSPS data rates and guaranteeing no missing codes over the full operating temperature range.
The device includes a high-performance sample-and-hold amplifier (SHA) and an on-chip voltage reference, making it suitable for various applications requiring high-speed and high-accuracy data conversion.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Resolution | Bits | 14 | 14 | 14 |
| Sample Rate | MSPS | 150 | 150 | 150 |
| Analog Supply Voltage | V | 1.8 | 1.8 | 1.8 |
| Digital Output Driver Supply | V | 1.8 | 2.5 | 3.3 |
| Signal-to-Noise Ratio (SNR) | dBc | 70.0 | 71.8 | 72.8 |
| Spurious Free Dynamic Range (SFDR) | dBc | 84 | 84 | 84 |
| Power Consumption | mW | 430 | 430 | 430 |
| Differential Input Bandwidth | MHz | 650 | 650 | 650 |
| Differential Non-Linearity (DNL) | LSB | ±0.4 | ±0.4 | ±0.4 |
| Operating Temperature Range | °C | -40 | - | +85 |
Key Features
- Single 1.8 V analog supply operation with separate digital output driver supply (1.8 V to 3.3 V)
- High performance sample-and-hold amplifier (SHA) with 650 MHz bandwidth
- On-chip voltage reference
- Flexible analog input: 1 V p-p to 2 V p-p range
- Data output formats: offset binary, Gray code, or twos complement
- Clock duty cycle stabilizer (DCS)
- Data output clock (DCO)
- Serial port control for various functions
- Built-in selectable digital test pattern generation
- Programmable clock and data alignment
Applications
- Ultrasound equipment
- IF sampling in communications receivers (CDMA2000, WCDMA, TD-SCDMA, and WiMax)
- Battery-powered instruments
- Hand-held scopemeters
- Low cost digital oscilloscopes
- Macro, micro, and pico cell infrastructure
Q & A
- What is the resolution and sample rate of the AD9254BCPZ-150?
The AD9254BCPZ-150 has a resolution of 14 bits and a sample rate of 150 MSPS.
- What is the operating voltage range for the analog supply and digital output driver supply?
The analog supply operates at 1.8 V, and the digital output driver supply can operate from 1.8 V to 3.3 V.
- What are the key features of the sample-and-hold amplifier (SHA) in the AD9254BCPZ-150?
The SHA has a bandwidth of 650 MHz and is truly differential, allowing for flexible input ranges and offsets.
- What data output formats are supported by the AD9254BCPZ-150?
The device supports offset binary, Gray code, and twos complement data formats.
- What is the purpose of the clock duty cycle stabilizer (DCS) in the AD9254BCPZ-150?
The DCS compensates for wide variations in the clock duty cycle, maintaining excellent overall ADC performance.
- What are some of the applications for the AD9254BCPZ-150?
Applications include ultrasound equipment, IF sampling in communications receivers, battery-powered instruments, hand-held scopemeters, and low-cost digital oscilloscopes.
- What is the power consumption of the AD9254BCPZ-150 at 150 MSPS?
The power consumption is 430 mW at 150 MSPS.
- What is the differential non-linearity (DNL) of the AD9254BCPZ-150?
The DNL is ±0.4 LSB.
- What is the operating temperature range for the AD9254BCPZ-150?
The operating temperature range is from -40°C to +85°C.
- Is the AD9254BCPZ-150 pin-compatible with other models?
Yes, it is pin-compatible with the AD9233, allowing for a simple migration from 12 bits to 14 bits.
- What package options are available for the AD9254BCPZ-150?
The device is available in a 48-lead LFCSP_VQ package.
