Overview
The AD9445BSVZ-105 is a 14-bit monolithic, sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is optimized for power, small size, and ease of use, making it ideal for various high-performance applications. The AD9445 features an on-chip, IF sampling track-and-hold circuit and operates at up to a 105 MSPS conversion rate. It is particularly suited for multi-carrier, multimode receivers, such as those found in cellular infrastructure equipment.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | Up to 105 MSPS |
| Signal-to-Noise Ratio (SNR) | 73.5 dB with 70 MHz input |
| Spurious-Free Dynamic Range (SFDR) | 100 dB two-tone SFDR with 30 MHz and 31 MHz inputs; 85 dBc SFDR with 225 MHz input |
| Differential Nonlinearity (DNL) | ±0.25 LSB typical |
| Integral Nonlinearity (INL) | ±0.8 LSB typical |
| Power Dissipation | 2.3 W |
| Supply Voltage | 3.3 V and 5 V |
| Input Range | 2.0 V p-p to 3.2 V p-p differential full-scale input |
| Output Type | LVDS (ANSI-644 compatible) or CMOS |
| Package | 100-Lead TQFP (14mm x 14mm) |
| Operating Temperature | −40°C to +85°C |
Key Features
- High performance with outstanding SFDR for multicarrier, multimode 3G and 4G cellular base station receivers.
- Ease of use with on-chip reference and track-and-hold circuit, and an output clock for simplified data capture.
- Packaged in a Pb-free, 100-lead TQFP/EP.
- Clock duty cycle stabilizer (DCS) to maintain ADC performance over a wide range of clock pulse widths.
- Out-of-range (OR) outputs to indicate when the signal is beyond the selected input range.
- Data format select (Offset Binary or 2’s complement) and output data mode select.
- Internal bias network for maximum linearity and range.
Applications
- Multi-carrier, multimode cellular receivers.
- Antenna array positioning.
- Power amplifier linearization.
- Broadband wireless.
- Radar and infrared imaging.
- Medical Imaging.
- Communications instrumentation.
Q & A
- What is the maximum sampling rate of the AD9445BSVZ-105?
The maximum sampling rate of the AD9445BSVZ-105 is up to 105 MSPS. - What are the typical values for DNL and INL of the AD9445BSVZ-105?
The typical values for DNL and INL are ±0.25 LSB and ±0.8 LSB, respectively. - What are the available output types for the AD9445BSVZ-105?
The AD9445BSVZ-105 offers LVDS (ANSI-644 compatible) or CMOS output types. - What is the power dissipation of the AD9445BSVZ-105?
The power dissipation of the AD9445BSVZ-105 is 2.3 W. - What is the operating temperature range of the AD9445BSVZ-105?
The operating temperature range is −40°C to +85°C. - Does the AD9445BSVZ-105 require external reference or driver components?
No external reference or driver components are required for many applications. - How can the input range of the AD9445BSVZ-105 be adjusted?
The input range can be adjusted by varying the reference voltage applied to the AD9445, using either the internal reference or an externally applied reference voltage. - What is the purpose of the clock duty cycle stabilizer (DCS) in the AD9445BSVZ-105?
The DCS maintains overall ADC performance over a wide range of clock pulse widths. - What are some of the key applications of the AD9445BSVZ-105?
Key applications include multi-carrier, multimode cellular receivers, antenna array positioning, power amplifier linearization, and more. - How does the AD9445BSVZ-105 handle digital and analog power supplies?
The device has separate digital and analog power supply pins, with the analog supplies denoted as AVDD1 (3.3 V) and AVDD2 (5 V), and the digital supply pins denoted as DRVDD.
