Overview
The AD9245BCPZ-65, produced by Analog Devices Inc., is a high-performance, 14-bit analog-to-digital converter (ADC) designed for a wide range of applications. This monolithic ADC operates from a single 3 V power supply and features a separate digital output driver supply to accommodate 2.5 V and 3.3 V logic families. It is fabricated on an advanced CMOS process and is available in a 32-lead Lead Frame Chip Scale Package (LFCSP) with an operating temperature range of –40°C to +85°C.
The AD9245BCPZ-65 is part of the AD9245 series, which includes various models with different maximum conversion rates. This specific model has a maximum conversion rate of 65 MSPS, making it suitable for high-speed data acquisition and processing.
Key Specifications
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Maximum Conversion Rate | 65 MSPS | - | - |
| Minimum Conversion Rate | 1 MSPS | - | - |
| Clock Period | - | 15.4 ns | - |
| Clock Pulse Width High | - | 6.2 ns | - |
| Clock Pulse Width Low | - | 6.2 ns | - |
| Power Consumption | - | 300 mW | - |
| Signal-to-Noise Ratio (SNR) | - | 72.7 dBc | - |
| Spurious Free Dynamic Range (SFDR) | - | 83.0 dBc | - |
| Differential Nonlinearity (DNL) | - | ±0.5 LSB | - |
| Input Bandwidth | - | 500 MHz | - |
| Operating Temperature Range | –40°C | - | +85°C |
Key Features
- Single 3 V supply operation (2.7 V to 3.6 V) with separate digital output driver supply for 2.5 V and 3.3 V logic families.
- Low power consumption: 300 mW at 65 MSPS.
- High performance sample-and-hold amplifier (SHA) with 500 MHz bandwidth and configurable for single-ended or differential operation.
- On-chip reference and sample-and-hold circuitry.
- Pin-compatible with AD9215, AD9235, and AD9236 for simplified migration.
- Clock duty-cycle stabilizer (DCS) to maintain ADC performance over a wide range of clock pulse widths.
- Output data in straight binary or twos complement formats.
- Out-of-range (OTR) signal to indicate overflow conditions.
Applications
- Medical imaging equipment.
- IF sampling in communications receivers (WCDMA, CDMA-One, CDMA-2000, and TDS-CDMA).
- Battery-powered instruments.
- Hand-held scopemeters.
- Spectrum analyzers.
- Power-sensitive military applications.
Q & A
- What is the maximum conversion rate of the AD9245BCPZ-65?
The maximum conversion rate of the AD9245BCPZ-65 is 65 MSPS.
- What is the power consumption of the AD9245BCPZ-65 at 65 MSPS?
The power consumption is approximately 300 mW at 65 MSPS.
- What is the input bandwidth of the AD9245BCPZ-65?
The input bandwidth is 500 MHz.
- What are the operating temperature ranges for the AD9245BCPZ-65?
The operating temperature range is –40°C to +85°C.
- Is the AD9245BCPZ-65 pin-compatible with other ADC models?
Yes, it is pin-compatible with the AD9215, AD9235, and AD9236.
- What types of data formats does the AD9245BCPZ-65 support?
The AD9245BCPZ-65 supports straight binary and twos complement data formats.
- Does the AD9245BCPZ-65 have an on-chip reference and sample-and-hold circuitry?
Yes, it includes on-chip reference and sample-and-hold circuitry.
- What is the purpose of the clock duty-cycle stabilizer (DCS) in the AD9245BCPZ-65?
The DCS maintains overall ADC performance over a wide range of clock pulse widths.
- How does the AD9245BCPZ-65 indicate overflow conditions?
It uses an out-of-range (OTR) signal to indicate overflow conditions.
- What are some common applications of the AD9245BCPZ-65?
Common applications include medical imaging equipment, IF sampling in communications receivers, battery-powered instruments, hand-held scopemeters, spectrum analyzers, and power-sensitive military applications.
