Part A
AD9280ARSZRL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4547 PCS
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Not a drop-in replacement
The AD9280ARSZRL and AD9283BRS-RL50 differ in resolution, sampling rate, supply voltage, and package, so the AD9283BRS-RL50 is not a direct drop-in substitute for the AD9280ARSZRL; circuit redesign and validation are required before substitution.
Different resolution
Different sampling rate
Different supply voltage
Different package
Parts at a glance
Part B
AD9283BRS-RL50
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6494 PCS
- Package
- SSOP-20
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | AD9280ARSZRL | AD9283BRS-RL50 | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both converters provide 8-bit resolution, so quantization accuracy is equivalent for substitutability. |
| Sampling Rate | 32 MSPS | 50 MSPS (up to 80 MSPS for -80 grade) | The AD9283 offers a higher maximum sample rate, enabling wider input bandwidth and faster signal capture than the AD9280. |
| Supply Voltage | 2.7 V to 5.5 V (single supply) | 3.0 V (single supply, 2.7 V to 3.6 V range) | The AD9280 supports a wider supply range including 5 V systems, while the AD9283 is limited to 3 V operation, affecting system compatibility. |
| Analog Input Range | 1 V p-p to 2 V p-p (programmable) | 1 V p-p (fixed) | The AD9280 allows adjustable input span for better dynamic range matching, whereas the AD9283 has a fixed 1 V p-p input range. |
| Power Consumption | ~95 mW at 32 MSPS | ~90 mW at 50 MSPS | Power draw affects thermal design and battery life; the AD9283 delivers higher speed at comparable power. |
| Package | 28-lead SSOP | 20-lead SSOP | Different package footprints and pin counts require PCB layout changes, preventing direct drop-in replacement. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both use parallel CMOS outputs, so digital interface compatibility is maintained between the two parts. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical industrial temperature ranges mean both parts suit the same environmental conditions. |
| SNR (Signal-to-Noise Ratio) | ~46 dB (at 10 MHz input) | ~46.5 dB (at Nyquist) | Similar SNR indicates comparable noise performance, an important factor for signal fidelity in substitution. |
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 | AD9280ARSZRL | AD9283BRS-RL50 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | - | 50M |
| 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 |
| Architecture | Pipelined | Pipelined |
| Reference Type | External | Internal |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 3.6V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Base Product Number | AD9280 | - |
| Sampling Rate (Per Second) | 32M | - |
| Number of A / D Converters | 1 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Cut Tape (CT), Tape & Reel (TR) | - |
Frequently asked questions
What are the key differences between the AD9280ARSZRL and AD9283BRS-RL50?
The AD9280ARSZRL is an 8-bit, 32 MSPS analog-to-digital converter in a 28-lead SSOP package, while the AD9283BRS-RL50 is an 8-bit, 50 MSPS ADC in a 20-lead SSOP package. The AD9283 offers a higher maximum sampling rate (50 MSPS vs 32 MSPS) and a smaller package, but the two devices differ in pinout, package footprint, and speed grade, so they are not drop-in replacements for each other.
Do the AD9280ARSZRL and AD9283BRS-RL50 have the same resolution and input architecture?
Both are 8-bit ADCs, but their input architectures differ. The AD9280ARSZRL uses a pipelined switched-capacitor architecture with a 1 V p-p differential input range, while the AD9283BRS-RL50 also uses a pipelined architecture but specifies a 1 V p-p differential input span with an on-chip reference option. Designers should verify input drive and reference requirements against each datasheet before substitution.
Can the AD9283BRS-RL50 be used as a direct replacement for the AD9280ARSZRL?
No. Although both are 8-bit pipelined ADCs, they differ in package (28-lead SSOP vs 20-lead SSOP), pinout, maximum sampling rate (32 MSPS vs 50 MSPS), and supply/interface details. A direct replacement is not possible without PCB redesign and validation against the AD9283BRS-RL50 datasheet.
What are the maximum sampling rates of the AD9280ARSZRL and AD9283BRS-RL50?
The AD9280ARSZRL has a maximum sampling rate of 32 MSPS, while the AD9283BRS-RL50 supports up to 50 MSPS. The higher speed grade of the AD9283BRS-RL50 makes it suitable for wider-bandwidth signal chains, provided the rest of the system can accommodate the faster clock and output timing.
What package types are used for the AD9280ARSZRL and AD9283BRS-RL50?
The AD9280ARSZRL is supplied in a 28-lead SSOP package, and the AD9283BRS-RL50 is supplied in a 20-lead SSOP package. The different lead counts and footprints mean the two devices are not mechanically interchangeable on the same PCB land pattern.
What are the typical supply voltages for the AD9280ARSZRL and AD9283BRS-RL50?
Both devices operate from a single 3 V supply (nominally 2.7 V to 3.6 V) with separate analog and digital supply pins. Designers should confirm the exact recommended operating conditions and decoupling requirements in the respective manufacturer datasheets before finalizing the power design.
Which device is better suited for higher-speed signal acquisition?
The AD9283BRS-RL50 is better suited for higher-speed acquisition because its 50 MSPS maximum sampling rate exceeds the 32 MSPS limit of the AD9280ARSZRL. However, the choice also depends on package constraints, pinout compatibility, and the analog front-end bandwidth of the target design.