Overview
The AD9245BCPZ-80 is a high-performance, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This monolithic ADC operates from a single 3 V power supply and features a high-performance sample-and-hold amplifier (SHA) and an on-chip voltage reference. The AD9245 uses a multistage differential pipelined architecture with output error correction logic to ensure 14-bit accuracy and guarantee no missing codes over the full operating temperature range of –40°C to +85°C. It is designed for various applications requiring high-speed and high-accuracy data conversion, including communications, imaging, and medical ultrasound.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 | Bits | ||
| Accuracy | No Missing Codes Guaranteed | |||
| Offset Error | ±0.30 | ±1.2 | % FSR | |
| Gain Error | ±0.28 | ±0.70 | % FSR | |
| Differential Nonlinearity (DNL) | ±0.5 | ±1.0 | LSB | |
| Integral Nonlinearity (INL) | ±1.4 | ±5.15 | LSB | |
| Maximum Conversion Rate | 80 | MSPS | ||
| Minimum Conversion Rate | 1 | MSPS | ||
| Clock Period | 12.5 | ns | ||
| Clock Pulse Width High | 4.6 | ns | ||
| Clock Pulse Width Low | 4.6 | ns | ||
| Output Delay (tPD) | 4.2 | ns | ||
| Pipeline Delay (Latency) | 7 | Cycles | ||
| Aperture Delay (tA) | 1.0 | ns | ||
| Aperture Uncertainty Jitter (tJ) | 0.3 | ps rms | ||
| Wake-Up Time | 7.0 | ms |
Key Features
- Single 3 V power supply operation (2.7 V to 3.6 V) with separate digital output driver supply to accommodate 2.5 V and 3.3 V logic families.
- Low power consumption: 366 mW at 80 MSPS, 300 mW at 65 MSPS, 165 mW at 40 MSPS, and 90 mW at 20 MSPS.
- High signal-to-noise ratio (SNR) of 72.7 dBc to Nyquist at 80 MSPS and spurious-free dynamic range (SFDR) of 83.0 dBc to Nyquist at 80 MSPS.
- Differential input with 500 MHz bandwidth and on-chip reference and sample-and-hold amplifier.
- Pin-compatible with AD9215, AD9235, and AD9236, allowing simplified migration from 10 bits to 14 bits and 20 MSPS to 80 MSPS.
- Clock duty cycle stabilizer (DCS) maintains overall ADC performance over a wide range of clock pulse widths.
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 resolution of the AD9245BCPZ-80? The AD9245BCPZ-80 has a resolution of 14 bits.
- What are the operating temperature ranges for the AD9245BCPZ-80? The AD9245BCPZ-80 operates over the industrial temperature range of –40°C to +85°C.
- What is the maximum conversion rate of the AD9245BCPZ-80? The maximum conversion rate is 80 MSPS.
- What is the power consumption of the AD9245BCPZ-80 at 80 MSPS? The power consumption is 366 mW at 80 MSPS.
- Is the AD9245BCPZ-80 pin-compatible with other ADC models? Yes, it is pin-compatible with the AD9215, AD9235, and AD9236.
- What is the bandwidth of the differential input? The differential input has a bandwidth of 500 MHz.
- What is the SNR of the AD9245BCPZ-80 at 80 MSPS? The SNR is 72.7 dBc to Nyquist at 80 MSPS.
- What is the SFDR of the AD9245BCPZ-80 at 80 MSPS? The SFDR is 83.0 dBc to Nyquist at 80 MSPS.
- Does the AD9245BCPZ-80 have an on-chip reference and sample-and-hold amplifier? Yes, it does.
- What are some common applications of the AD9245BCPZ-80? Common applications include medical imaging, IF sampling in communications, battery-powered instruments, hand-held scopemeters, spectrum analyzers, and power-sensitive military applications).
