Part A
AD73311ARSZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6819 Stückzahl
- Package
- SSOP-20
- Series
- Datenerfassung mit dem Analog Front End (AFE)
Replacement verdict
Compatible functional replacement candidate
The AD73311ARSZ and AD73311ARS-REEL are functionally equivalent implementations of the same Analog Devices AD73311 single-channel 16-bit sigma-delta analog front end, differing only in packaging format (tube vs. tape-and-reel). Both share identical silicon, pinout, supply requirements, and temperature ratings, making them interchangeable for design and qualification purposes; the choice between them is driven solely by assembly and inventory handling preferences.
Function and Core Architecture
High match
Package and Pinout
High match
Supply Voltage and Power
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD73311ARS-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 426 Stückzahl
- Package
- SSOP-20
- Series
- Datenerfassung mit dem Analog Front End (AFE)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD73311ARSZ | AD73311ARS-REEL | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures identical silicon design and process, which is fundamental for functional substitutability. |
| Part Number Base | AD73311 | AD73311 | Identical base part number confirms both are the same analog front-end device family. |
| Function | Single-channel 16-bit analog front end (AFE) with programmable gain amplifier | Single-channel 16-bit analog front end (AFE) with programmable gain amplifier | Matching core function is the primary requirement for a drop-in replacement. |
| Package / Case | 20-SSOP (Shrink Small Outline Package) | 20-SSOP (Shrink Small Outline Package) | Identical package and footprint allow the parts to be interchanged on the same PCB without layout changes. |
| Resolution | 16-bit ADC / DAC | 16-bit ADC / DAC | Same resolution ensures equivalent signal conversion accuracy and system performance. |
| Supply Voltage | 3.0 V to 3.6 V (single supply) | 3.0 V to 3.6 V (single supply) | Matching supply range guarantees compatibility with the same power rail design. |
| Interface | Serial (SPI-compatible) port | Serial (SPI-compatible) port | Same digital interface means no firmware or host-controller changes are needed. |
| Packaging / Ordering Format | Tube / individual (Z = RoHS-compliant, lead-free) | Tape and reel (REEL suffix) | The only meaningful difference is the shipping format; the REEL version is supplied on tape-and-reel for automated assembly, while the Z version is typically tube-packed. Electrically and functionally they are interchangeable. |
| RoHS / Lead-Free Status | RoHS-compliant (Z suffix denotes lead-free) | Non-RoHS legacy part number (no Z suffix) | The Z suffix explicitly marks the lead-free/RoHS version; the non-Z REEL part may be the older leaded (non-RoHS) variant, which matters for regulatory compliance and solder process compatibility. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD73311ARSZ | AD73311ARS-REEL |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of Channels | 1 | 2 |
| Power (Watts) | 50 mW | 50 mW |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 3V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 3V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD73311ARSZ and AD73311ARS-REEL?
Both are the same AD73311 analog front-end device in a 20-lead SSOP (RS) package. The AD73311ARSZ is the RoHS-compliant tube/standard packaging orderable part number, while AD73311ARS-REEL is the tape-and-reel packaging variant. The silicon, function, and package are identical; only the shipping/packaging form and the RoHS suffix designation differ.
Are AD73311ARSZ and AD73311ARS-REEL electrically and functionally interchangeable?
Yes. Both orderable part numbers refer to the same AD73311 device in the 20-lead SSOP package with identical pinout and electrical specifications. They differ only in packaging format (tube vs. tape-and-reel) and RoHS compliance marking, so they are functionally interchangeable in a given design.
What is the AD73311 and what are its key features?
The AD73311 is a single-channel, 16-bit analog front-end (AFE) with an on-chip programmable gain amplifier and a sigma-delta A/D converter, intended for speech and telephony-band signal processing. It provides a serial port for interfacing to DSPs/microcontrollers and operates from a single 3 V supply. It is available in a 20-lead SSOP package.
Does the RoHS suffix "Z" on AD73311ARSZ affect form, fit, or function?
No. The "Z" suffix denotes RoHS-compliant construction (lead-free/Green) per Analog Devices part numbering. It does not change the electrical specifications, pinout, or package dimensions relative to the non-Z version; it only reflects compliance with RoHS requirements.
Which packaging option should be selected for high-volume SMT production?
AD73311ARS-REEL (tape-and-reel) is intended for automated pick-and-place SMT assembly lines and high-volume production. AD73311ARSZ in tube form is typically used for prototyping, low-volume runs, or manual handling. Selection depends on the assembly process rather than device performance.
Are AD73311ARSZ and AD73311ARS-REEL both RoHS compliant?
The "Z" suffix on AD73311ARSZ explicitly denotes RoHS-compliant construction. For AD73311ARS-REEL, RoHS status should be confirmed against the specific manufacturer datasheet or distributor compliance data for that orderable part number, since the reel variant's suffix convention may differ. Do not assume compliance without verifying the exact orderable part number.
Can AD73311ARSZ and AD73311ARS-REEL be used in the same PCB footprint?
Yes. Both are the same AD73311 device in the 20-lead SSOP (RS) package, so they share the same package dimensions, pinout, and PCB land pattern. The footprint is identical; only the delivery packaging differs.