Part A
AD9240ASZRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2617 PCS
- Package
- QFP-44
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9240ASZRL and AD9240ASRL are functionally equivalent 14-bit, 10 MSPS analog-to-digital converters from Analog Devices, sharing the same core architecture, resolution, sampling rate, and package family. The primary distinction lies in the RoHS-compliant lead finish of the ASZRL variant versus the non-RoHS ASRL version, making the ASZRL a suitable functional replacement candidate where environmental compliance is required, subject to final validation of solderability and assembly process compatibility.
Resolution and Sampling Rate
High match
Package Type
High match
RoHS Compliance
Validation required
Operating Temperature Range
High match
Parts at a glance
Part B
AD9240ASRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 281 PCS
- Package
- QFP-44
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9240ASZRL | AD9240ASRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Determines the quantization precision of the ADC; identical resolution means both parts provide the same digital output word width and theoretical SNR. |
| Sampling Rate | 10 MSPS | 10 MSPS | Sets the maximum conversion throughput; matching sample rates ensure the parts are interchangeable for the same signal bandwidth requirements. |
| Number of Inputs | 1 (single-ended/differential) | 1 (single-ended/differential) | Defines the input channel configuration; identical input architecture allows the same analog front-end design to be reused. |
| Input Type | Differential | Differential | Affects the analog interface and drive requirements; matching input type ensures the same driver amplifier and termination network can be used. |
| Data Interface | Parallel | Parallel | Determines how the digital output connects to the host processor or FPGA; identical parallel interface ensures pin-compatible digital routing. |
| Supply Voltage | 5 V (analog and digital) | 5 V (analog and digital) | Sets the power rail requirements; matching supply voltage means the same power supply design can be used without modification. |
| Package / Case | 44-LQFP | 44-LQFP | Determines the PCB footprint and assembly; identical package ensures the parts are physically drop-in compatible. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Defines the environmental operating envelope; matching temperature ranges ensure equivalent reliability in the target application. |
| Packaging / Reel | Tape & Reel (RL) | Tape & Reel (RL) | Indicates the shipping format for automated assembly; both are reeled, but the Z suffix denotes a lead-free/RoHS variant affecting compliance and soldering process. |
| RoHS / Lead-Free Status | RoHS compliant (Z = lead-free) | Non-RoHS (lead-containing) | Affects regulatory compliance and solder reflow profile; the Z-suffix part is lead-free while the non-Z part contains lead, which matters for RoHS-restricted markets. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9240ASZRL | AD9240ASRL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 14 | 14 |
| Sampling Rate(Per Second) | 10M | 10M |
| Number of Inputs | 1 | 1 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | Parallel | Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | Pipelined | Pipelined |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 5V | 5V |
| Operating Temperature | -55°C ~ 85°C | -55°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9240ASZRL and AD9240ASRL?
Both parts are 14-bit, 10 MSPS analog-to-digital converters from Analog Devices in a 44-lead MQFP package. The primary difference is the packaging/ordering suffix: the AD9240ASZRL is supplied in lead-free (Pb-free/RoHS-compliant) molding compound and is tape-and-reel packaged, while the AD9240ASRL is the standard (non-Pb-free) tape-and-reel version. Electrical performance specifications are otherwise identical per the AD9240 datasheet.
Are the AD9240ASZRL and AD9240ASRL electrically and functionally interchangeable?
Yes. Both are the same AD9240 converter die in the same 44-lead MQFP package with identical pinout, resolution (14-bit), sampling rate (10 MSPS), and analog/digital supply requirements. They differ only in the Pb-free/RoHS status of the package finish and the ordering suffix, so they are functionally interchangeable in a given design.
What does the "Z" in AD9240ASZRL indicate?
Per Analog Devices' ordering nomenclature, the "Z" suffix denotes a lead-free (Pb-free), RoHS-compliant package. The AD9240ASRL lacks this suffix and is the non-Pb-free version. Designers requiring RoHS compliance should select the AD9240ASZRL.
What is the "RL" suffix on both part numbers?
The "RL" suffix indicates tape-and-reel packaging for automated pick-and-place assembly. Both the AD9240ASZRL and AD9240ASRL are supplied in tape-and-reel form; the reel quantity and packaging orientation follow Analog Devices' standard MQFP tape-and-reel specification.
What are the core performance specifications shared by both parts?
Both are 14-bit monolithic ADCs with a 10 MSPS maximum sampling rate, a pipelined switched-capacitor architecture, on-chip sample-and-hold, and a 2.5 V to 5 V analog supply with separate digital supply. They provide a 14-bit parallel output and are specified for the commercial temperature range per the AD9240 datasheet. Consult the official datasheet for exact SNR, SFDR, and power figures.
Can the AD9240ASZRL be used as a drop-in replacement for the AD9240ASRL?
Yes, from an electrical and footprint standpoint, since both share the same die, 44-lead MQFP package, and pinout. The only consideration is that the AD9240ASZRL is Pb-free/RoHS-compliant, so reflow profile and solder alloy should match lead-free assembly requirements. Verify against the manufacturer datasheet and your assembly process before substitution.
Which part should be chosen for a RoHS-compliant design?
Choose the AD9240ASZRL. Its "Z" suffix confirms lead-free, RoHS-compliant construction, whereas the AD9240ASRL is the non-Pb-free variant. For designs with RoHS or lead-free assembly mandates, the AD9240ASZRL is the appropriate orderable part number.