AD9240AS - 14-Bit 10 MSPS ADC | Analog Devices
MPN： AD9240AS ✗ 停產AD9240AS 概覽
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.
直接替換替代品，適用於 AD9240AS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD9240AS （相同外形與佔位） — 差異在於 Architecture, Input Type, Package, Resolution, Supply.
此產品無可直接替換的替代品。
申請替代品AD9240AS 最大額定值與電氣特性
| 解析度 | 14 bits |
| 取樣率 | 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 |
| 封裝 | 44-pin MQFP, 10 mm x 10 mm |
| Output Interface | 14-bit parallel digital output |
| Application Domains | Imaging, communications, medical, and data-acquisition systems |
| 安裝類型 | Surface mount |
| AEC-Q100 Qualification | not_applicable |
AD9240AS 44-pin mqfp, 10 mm x 10 mm 腳位配置指南
AD9240AS（44-pin mqfp, 10 mm x 10 mm 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： AD9240AS.
請參閱 資料表 以查看完整腳位配置。
典型應用
AD9240AS 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 AD9240AS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| 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 |
主要差異化特點
- Integrated acquisition function (對比Generic external-discrete ADC designs)
- Flexible analog input architecture (對比Single-ended-only ADC implementations)
- Integrated reference capability (對比ADCs requiring a fixed external reference arrangement)
設計說明
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.
合規資訊
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.
