Part A
AD9280ARSZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6537 ПКС
- Package
- SSOP-28
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9283BRS-100 is a functional replacement candidate for the AD9280ARSZ, sharing the same 8-bit resolution, 28-pin SSOP package, and parallel output interface, but it requires validation of the higher 100 MSPS sampling rate, reduced analog input range, and differing supply and power characteristics before adoption in the target design.
Resolution and Output Interface
High match
Sampling Rate
Validation required
Analog Input Range
Validation required
Supply Voltage and Power
Validation required
Parts at a glance
Part B
AD9283BRS-100
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5432 ПКС
- Package
- SSOP-20
- Series
- Сбор данных - аналогово-цифровые преобразователи (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-100 | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit ADCs, so quantization resolution is equivalent for substitutability. |
| Maximum Sampling Rate | 32 MSPS | 100 MSPS | The AD9283 supports over 3x the sample rate, enabling higher-bandwidth signal capture; a slower part cannot substitute in high-speed designs. |
| Analog Input Bandwidth | 300 MHz | 475 MHz | Wider input bandwidth allows the AD9283 to digitize higher-frequency analog signals without significant attenuation. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 3.6 V | The AD9280 tolerates 5 V supplies while the AD9283 is limited to 3.6 V, affecting system-level power rail compatibility. |
| Power Consumption | 95 mW typical at 32 MSPS | 90 mW typical at 100 MSPS | The AD9283 delivers much higher throughput at comparable power, giving better power-per-MSPS efficiency. |
| SNR (Signal-to-Noise Ratio) | 48 dB typical at 10 MHz input | 46.5 dB typical at 41 MHz input | SNR determines the effective dynamic range; the AD9280 offers slightly better noise performance at lower input frequencies. |
| SFDR (Spurious-Free Dynamic Range) | 60 dBc typical | 55 dBc typical | Higher SFDR indicates fewer spurious tones, which is critical in communication and spectral-analysis applications. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both use parallel CMOS outputs, so digital interface compatibility is maintained between the two parts. |
| Package | 28-lead SSOP | 20-lead SSOP | Different package footprints and pin counts mean the parts are not drop-in replacements on an existing PCB. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical industrial temperature ratings ensure both parts suit 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-100 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 32M | 100M |
| 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 |
| 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 |
Frequently asked questions
What are the key differences between the AD9280ARSZ and AD9283BRS-100?
The AD9280ARSZ is an 8-bit, 32 MSPS analog-to-digital converter, while the AD9283BRS-100 is an 8-bit, 100 MSPS ADC. The AD9283BRS-100 offers a higher maximum sampling rate, making it suitable for higher-bandwidth signal acquisition, whereas the AD9280ARSZ targets lower-speed, lower-power applications.
Do the AD9280ARSZ and AD9283BRS-100 use the same package and pinout?
No. The AD9280ARSZ is supplied in a 28-lead SSOP package, and the AD9283BRS-100 is supplied in a 20-lead SSOP package. Because the package sizes and pin counts differ, the two devices are not pin-compatible and cannot be dropped into the same PCB footprint.
What are the maximum sampling rates of these two ADCs?
The AD9280ARSZ has a maximum conversion rate of 32 MSPS. The AD9283BRS-100 has a maximum conversion rate of 100 MSPS. Designs requiring sample rates above 32 MSPS must use the AD9283BRS-100 or another higher-speed converter.
How do the power consumption figures compare between the AD9280ARSZ and AD9283BRS-100?
The AD9280ARSZ typically dissipates about 95 mW from a single 3 V supply. The AD9283BRS-100 typically dissipates about 90 mW at 100 MSPS from a 3 V supply. Both are low-power CMOS converters, but the AD9283BRS-100 delivers substantially higher throughput at a comparable power level.
What are the analog input voltage ranges for the AD9280ARSZ and AD9283BRS-100?
The AD9280ARSZ offers a flexible input range of 1 V p-p to 2 V p-p, set via the reference and input span configuration. The AD9283BRS-100 has a 1 V p-p differential analog input range. The input drive requirements differ, so the analog front-end must be designed accordingly for each part.
Can the AD9283BRS-100 directly replace the AD9280ARSZ in an existing design?
No. The devices differ in package, pin count, maximum sample rate, and analog input configuration. A direct substitution is not possible without redesigning the PCB footprint, clocking, and analog front-end, and revalidating performance against the system requirements.
What output interface do the AD9280ARSZ and AD9283BRS-100 provide?
Both devices provide parallel CMOS-compatible digital output data at 8-bit resolution. The AD9280ARSZ outputs 8-bit parallel data at rates up to 32 MSPS, and the AD9283BRS-100 outputs 8-bit parallel data at rates up to 100 MSPS. The receiving logic must be capable of capturing data at the respective clock rates.
Which part is better suited for high-speed signal acquisition?
The AD9283BRS-100 is better suited for high-speed signal acquisition because its 100 MSPS maximum sample rate supports wider input bandwidths than the 32 MSPS rate of the AD9280ARSZ. The AD9280ARSZ is more appropriate for lower-speed, power-sensitive designs where 32 MSPS is sufficient.