AD9240AS - 14-Bit 10 MSPS ADC | Analog Devices
MPN: AD9240AS ✗ End of Life| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
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AD9240AS Overview
An ADC is an analog-to-digital converter, a semiconductor that samples an analog voltage and represents it as a numeric code. The AD9240 belongs to the data-converter hierarchy and uses a pipelined conversion architecture. Its 14-bit resolution supports 16,384 digital codes, while its 10 MSPS rating supports acquisition of up to 10 million samples per second. The reported power dissipation is 285 mW.
Key features include 2.5 LSB integral nonlinearity, 0.6 LSB differential nonlinearity, and 0.36 LSB input-referred noise. The differential input structure accepts varying input spans and permits single-ended operation as well as differential operation. The on-chip sample-and-hold amplifier is suitable for multiplexed systems that switch full-scale voltage levels between successive samples, reducing the need for external acquisition circuitry.
The AD9240's architecture is designed for low-cost, high-speed data acquisition while maintaining the resolution expected from hybrid converters. Its parallel 14-bit output supports direct connection to digital logic, FPGA fabric, DSP input latches, or data-capture hardware when timing and bus-width requirements are carefully matched. The programmable reference can be supplemented by an external reference when dc accuracy or temperature drift requirements exceed the internal-reference requirements.
Typical applications include medical imaging, communications receivers, industrial data acquisition, imaging systems, and instrumentation. The differential input path can improve common-mode rejection when the source is balanced, while single-ended input simplifies lower-cost front ends. System designers should verify signal amplitude, reference voltage, clock jitter, output timing, and package-level thermal performance against the manufacturer datasheet.
For PCB implementation, treat the analog input and reference paths as sensitive high-speed signal paths. Keep input and reference traces short, use controlled-impedance routing for digital outputs where appropriate, and provide stable bypass capacitance according to the datasheet. Do not infer substitute pin compatibility from similar sampling rates alone; verify the complete pinout, supply requirements, reference voltage, output coding, and timing before replacement.
This page consolidates verified AD9240AS product information, package and architecture details, application guidance, and the engineering limits that matter when evaluating the converter or searching for a true drop-in replacement.
Drop-in alternatives for AD9240AS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD9240AS (same form factor and footprint) — differing in Architecture, Input Type, Package, Resolution, Supply.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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Request AlternativesAD9240AS Maximum Ratings & Electrical Characteristics
| Resolution | 14 bits |
| Sampling Rate | 10 MSPS |
| Architecture | Pipelined ADC |
| Input Type | Single-ended or differential analog input |
| Supply | Single +5 V supply |
| Power Dissipation | 285 mW |
| Integral Nonlinearity | 2.5 LSB |
| Differential Nonlinearity | 0.6 LSB |
| Input-Referred Noise | 0.36 LSB |
| Sample-and-Hold Amplifier | On-chip sample-and-hold amplifier |
| Reference | Programmable voltage reference; external reference supported |
| Input Flexibility | Differential structure supports varying input spans |
| Package | 44-pin MQFP, 10 mm x 10 mm |
| Output Interface | 14-bit parallel digital output |
| Application Domains | Imaging, communications, medical, and data-acquisition systems |
| Mounting Type | Surface mount |
| AEC-Q100 Qualification | not_applicable |
AD9240AS 44-pin mqfp, 10 mm x 10 mm Pin Configuration Guide
Pin configuration for AD9240AS (44-pin mqfp, 10 mm x 10 mm package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for AD9240AS.
Refer to the datasheet for full pin configuration.
Typical Applications
AD9240AS is suitable for 6 applications: Medical Imaging Signal Acquisition, Communications Receiver, Industrial Data-Acquisition System, Imaging Sensor Interface, Instrumentation and Test Equipment, Multiplexed Sensor Acquisition.
Medical Imaging Signal Acquisition
The AD9240AS fits medical-imaging front ends that require 14-bit conversion at 10 MSPS from a compact analog-to-digital converter. Its on-chip sample-and-hold amplifier simplifies acquisition when successive inputs can be sampled without a complex external hold circuit. The differential input structure can support balanced sensor drives and improve rejection of common-mode noise. Designers should still verify signal bandwidth, safe input range, clock jitter, isolation requirements, and system-level medical compliance because the supplied data does not claim medical certification.
Recommended
Communications Receiver
For communications receiver boards, the AD9240AS provides a 10 MSPS, 14-bit conversion stage for intermediate-frequency or baseband digitization when the analog bandwidth and noise requirements match the receiver architecture. The differential input arrangement can accept balanced mixer or driver outputs, while the parallel output can feed FPGA or DSP capture logic. Clock quality and input settling are especially important at the sampling edge. Verify gain, anti-alias filtering, reference stability, and output timing against the complete Analog Devices datasheet.
Recommended
Industrial Data-Acquisition System
The AD9240AS is appropriate for industrial acquisition systems that sample sensor or process signals at up to 10 MSPS and need a 14-bit digital representation. Its reported 285 mW dissipation and integrated sample-and-hold amplifier can simplify a compact analog front end, while the parallel output supports FPGA or DSP processing. A practical design should include an input protection strategy, anti-alias filter, stable reference arrangement, and acquisition timing margin. The converter is a component-level building block, not a complete precision measurement system.
Recommended
Imaging Sensor Interface
The AD9240AS can serve as the ADC in imaging systems where sensor output bandwidth is compatible with its 10 MSPS conversion rate and 14-bit code width. Its flexible input architecture supports both single-ended and differential analog paths, allowing the interface to match sensor drive characteristics. Because imaging signals may have high dynamic-range requirements, the design should evaluate noise, nonlinearity, input span, and sampling-clock quality rather than relying on nominal resolution alone. External filtering, buffering, and reference conditioning may be required.
Recommended
Instrumentation and Test Equipment
The AD9240AS is useful in instrumentation that requires repeatable conversion of an analog waveform into 14-bit parallel data at 10 MSPS. Its integrated sample-and-hold amplifier can reduce front-end complexity for moderate-bandwidth measurements, while the differential input option can improve balance when driven by a suitable instrumentation amplifier. Instrument designers should account for clock jitter, reference drift, analog settling, and connector or probe loading. The component should be calibrated in the complete measurement chain rather than specified by converter resolution alone.
Recommended
Multiplexed Sensor Acquisition
The on-chip sample-and-hold amplifier makes the AD9240AS a candidate for multiplexed sensor systems that switch among signals with known full-scale voltage levels. The converter's 10 MSPS capability can support rapid successive sampling, while 14-bit output preserves useful amplitude detail. Multiplexer settling time, channel-to-channel crosstalk, and sample-rate allocation can limit real accuracy. Engineers should use the sample-and-hold acquisition specification, external reference information, and analog settling requirements in the manufacturer datasheet to establish whether the architecture meets the target accuracy.
Recommended
Recommended Products Summary
Engineering reference data for AD9240AS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Analog Devices |
| Package | 44-pin MQFP, 10 mm x 10 mm |
| Resolution | 14 bits |
| Sampling Rate | 10 MSPS |
| Architecture | Pipelined ADC |
| Input Type | Single-ended or differential analog input |
| Supply | Single +5 V supply |
| Power Dissipation | 285 mW |
| Integral Nonlinearity | 2.5 LSB |
| Differential Nonlinearity | 0.6 LSB |
| Input-Referred Noise | 0.36 LSB |
| Reference | Programmable voltage reference with external-reference support |
| Sample-and-Hold Amplifier | On-chip |
| Output Interface | 14-bit parallel |
| Application Domains | Imaging, communications, medical, and data acquisition |
Key Differentiators
- Integrated acquisition function (vs Generic external-discrete ADC designs)
- Flexible analog input architecture (vs Single-ended-only ADC implementations)
- Integrated reference capability (vs ADCs requiring a fixed external reference arrangement)
Design Notes
Treat the analog input as a high-speed sampling node. Use the shortest practical trace from the driver or conditioning network to the AD9240AS input, maintain controlled return paths, and place the input network close to the converter. The verified data confirms a 10 MSPS pipelined ADC with differential or single-ended input capability, but it does not provide the complete input impedance, settling-time, or recommended-layout values; obtain those values from the official datasheet before finalizing the layout.
Plan a low-impedance +5 V supply network for the converter and decouple the supply according to the manufacturer's recommendations. The verified data identifies a single +5 V supply and 285 mW dissipation, but it does not provide the complete bypass-capacitor values or allowed supply tolerance. Do not invent capacitor values; derive them from the reference and acquisition sections of the AD9240 datasheet and check them against the clock rate and PCB return path.
Route the 14-bit parallel output as a controlled digital interface and account for output timing relative to the sampling clock. Keep the clock and data paths away from the analog input and reference nodes, and use a solid ground-plane strategy. Because the supplied data does not specify output propagation delay, setup time, hold time, or trace impedance, these values must be taken directly from the manufacturer datasheet before FPGA or DSP timing closure.
Compliance Information
The supplied verified data does not provide authoritative AD9240AS RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. TrustCompo search text mentions RoHS-compliant and lead-free components, but that secondary listing was not used as an authoritative compliance source.
