Overview
The AD9240ASZ, produced by Analog Devices Inc., is a 14-bit, 10 MSPS (Mega Samples Per Second) monolithic analog-to-digital converter (ADC). This device combines a low-cost, high-speed CMOS process with a novel architecture to achieve high resolution and speed at a fraction of the power consumption and cost of existing hybrid implementations. The AD9240ASZ features an on-chip, high-performance, low-noise sample-and-hold amplifier and a programmable voltage reference, making it a complete single-chip solution for analog-to-digital conversion.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Sampling Rate | 10 MSPS |
| Input Type | Differential, Single Ended |
| Data Interface | Parallel |
| Architecture | Pipelined |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | +5 V |
| Voltage - Supply, Digital | +5 V |
| Operating Temperature | -55°C to +85°C |
| Package | 44-Lead MQFP (13.2mm x 10mm) |
| Power Dissipation | 285 mW |
| Integral Nonlinearity Error | 2.5 LSB |
| Differential Nonlinearity Error | 0.6 LSB |
| Input Referred Noise | 0.36 LSB rms |
| Signal-to-Noise and Distortion Ratio (SNDR) | 77.5 dB |
| Spurious-Free Dynamic Range (SFDR) | 90 dB |
Key Features
- Low Power Dissipation: The AD9240ASZ consumes only 285 mW on a single +5 V power supply.
- Single +5 V Supply: Simplifies system design and reduces power consumption.
- On-Chip Sample-and-Hold Amplifier and Voltage Reference: High-performance, low-noise sample-and-hold amplifier and programmable voltage reference.
- Flexible Analog Input Range: The onboard sample-and-hold amplifier can be configured for either single-ended or differential inputs of varying input spans.
- Flexible Digital Outputs: Digital outputs can be configured to interface with +3 V and +5 V CMOS logic families.
- Excellent AC Performance and Low Noise: Provides nearly 13 ENOB (Effective Number of Bits) performance and has an input referred noise of 0.36 LSB rms.
- Out-of-Range Indicator: Indicates an overflow condition which can be used with the most significant bit to determine low or high overflow.
- Excellent Undersampling Performance: Well suited for Direct-IF Down Conversion extending to 45 MHz.
Applications
The AD9240ASZ is highly versatile and can be easily interfaced with various systems, including:
- Imaging Systems: Suitable for high-speed imaging applications due to its high sampling rate and low noise.
- Communications Systems: Performs well in communication systems employing Direct-IF Down Conversion.
- Medical Systems: Ideal for medical data acquisition systems requiring high accuracy and low noise.
- Data-Acquisition Systems: Suitable for multiplexed systems that switch full-scale voltage levels in successive channels.
Q & A
- What is the sampling rate of the AD9240ASZ?
The AD9240ASZ has a sampling rate of 10 MSPS (Mega Samples Per Second).
- What is the resolution of the AD9240ASZ?
The AD9240ASZ is a 14-bit analog-to-digital converter.
- What type of input does the AD9240ASZ support?
The AD9240ASZ supports both differential and single-ended inputs.
- What is the power supply requirement for the AD9240ASZ?
The AD9240ASZ operates on a single +5 V power supply.
- What is the power dissipation of the AD9240ASZ?
The AD9240ASZ consumes 285 mW of power.
- What is the operating temperature range of the AD9240ASZ?
The operating temperature range is -55°C to +85°C.
- What type of package does the AD9240ASZ come in?
The AD9240ASZ comes in a 44-Lead MQFP (Metric Quad Flatpack) package.
- Does the AD9240ASZ have an on-chip sample-and-hold amplifier?
Yes, the AD9240ASZ features an on-chip, high-performance, low-noise sample-and-hold amplifier.
- Can the digital outputs of the AD9240ASZ be configured to interface with different logic families?
Yes, the digital outputs can be configured to interface with +3 V and +5 V CMOS logic families.
- What is the signal-to-noise and distortion ratio (SNDR) of the AD9240ASZ?
The SNDR of the AD9240ASZ is 77.5 dB.
