Part A
AD9280ARSZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6537 PCS
- Package
- SSOP-28
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9283BRS-RL80 is a functional replacement candidate for the AD9280ARSZ, sharing the same 8-bit resolution, 32 MSPS maximum sampling rate, and 3 V supply architecture, but it is not a drop-in replacement due to differences in analog input range, package footprint, and power consumption that require design validation.
Resolution and Sampling Rate
High match
Analog Input Range
Validation required
Package and Pinout
Not compatible
Power Consumption
Validation required
Parts at a glance
Part B
AD9283BRS-RL80
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5358 PCS
- Package
- SSOP-20
- Series
- Data Acquisition - Analog to Digital Converters (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 | AD9280ARSZ | AD9283BRS-RL80 | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit ADCs, so quantization accuracy is equivalent for substitutability. |
| Sampling Rate | 32 MSPS | 80 MSPS | The AD9283 supports a much higher maximum sample rate, enabling wider input bandwidth and faster signal capture. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 3.6 V | The AD9280 tolerates a wider supply range including 5 V, while the AD9283 is limited to 3.3 V-class supplies. |
| Analog Input Range | 1 V p-p to 2 V p-p (configurable) | 1 V p-p | The AD9280 offers a configurable input span, allowing better matching to different signal amplitudes. |
| Power Consumption | ~95 mW typical | ~90 mW typical | Similar power draw, but the AD9283 delivers higher speed at comparable consumption. |
| Package | 28-lead SSOP | 20-lead SSOP | Different pin counts and footprints mean the parts are not drop-in replacements on a PCB. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both provide parallel CMOS outputs, simplifying digital interface compatibility. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings support use in the same environmental conditions. |
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 | AD9280ARSZ | AD9283BRS-RL80 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 32M | 80M |
| Data Interface | Parallel | Parallel |
| Number of A/D Converters | 1 | 1 |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Number of Inputs | 1 | - |
| Input Type | Differential, Single Ended | - |
| Configuration | S/H-ADC | - |
| Ratio - S / H: ADC | 1:1 | - |
| Architecture | Pipelined | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | - |
Frequently asked questions
What are the key differences between the AD9280ARSZ and AD9283BRS-RL80?
The AD9280ARSZ is an 8-bit, 32 MSPS analog-to-digital converter in a 28-lead SSOP package, while the AD9283BRS-RL80 is an 8-bit, 80 MSPS ADC in a 20-lead SSOP package supplied in tape-and-reel format. The AD9283 offers a higher maximum sampling rate (80 MSPS vs 32 MSPS), but the two devices differ in package footprint, pinout, and speed grade, so they are not drop-in replacements.
Are the AD9280ARSZ and AD9283BRS-RL80 pin-compatible?
No. The AD9280ARSZ uses a 28-lead SSOP package, whereas the AD9283BRS-RL80 uses a 20-lead SSOP package. The different lead counts and pin assignments mean the PCB land patterns and pin functions are not interchangeable without a redesign.
What is the maximum sampling rate of each device?
The AD9280ARSZ has a maximum conversion rate of 32 MSPS. The AD9283BRS-RL80 has a maximum conversion rate of 80 MSPS. The AD9283 is therefore suited to higher-speed signal chains, while the AD9280 targets lower-speed, lower-power applications.
What resolution and analog input range do these ADCs provide?
Both devices are 8-bit ADCs. The AD9280ARSZ offers a flexible analog input range (typically 1 V to 2 V peak-to-peak, set via reference and input configuration), while the AD9283BRS-RL80 provides a 1 V peak-to-peak analog input range. Designers should confirm the exact input span and reference configuration against the respective datasheets for their application.
What are the typical power consumption figures for these parts?
The AD9280ARSZ typically consumes about 95 mW at 32 MSPS. The AD9283BRS-RL80 typically consumes about 100 mW at 80 MSPS. Despite the higher sampling rate, the AD9283 maintains comparable power consumption, making it attractive for power-sensitive high-speed designs.
What package and packaging options are available for each device?
The AD9280ARSZ is supplied in a 28-lead SSOP package in tube or tray format. The AD9283BRS-RL80 is supplied in a 20-lead SSOP package in tape-and-reel format (the "RL80" suffix denotes reel packaging). The different package sizes and packaging formats affect handling, assembly, and board layout.
Can the AD9283BRS-RL80 be used as a direct replacement for the AD9280ARSZ in an existing design?
No. Because the two devices differ in package size, pinout, maximum sampling rate, and analog input configuration, a direct substitution is not possible. Any replacement requires verifying pin functions, PCB layout, clock and input drive requirements, and timing against the target datasheet.
What are the typical applications for each ADC?
The AD9280ARSZ is commonly used in lower-speed data acquisition, imaging, and general-purpose signal processing where 32 MSPS is sufficient. The AD9283BRS-RL80, with its 80 MSPS rate, is suited to higher-speed applications such as video digitization, high-speed data acquisition, and communications receive chains. Application suitability should be confirmed against each datasheet's specifications.