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-RL50 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 package footprint, analog input range, and power consumption that require board-level validation.
Resolution and Sampling Rate
High match
Package Type
Validation required
Analog Input Range
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AD9283BRS-RL50
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6494 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-RL50 | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit ADCs, so quantization accuracy is equivalent for substitutability. |
| Sampling Rate | 32 MSPS | 50 MSPS (up to 80 MSPS variants) | Higher sampling rate supports wider input bandwidth; the AD9283 can capture faster signals than the AD9280. |
| Supply Voltage | 2.7 V to 5.5 V (analog), 2.7 V to 5.5 V (digital) | 3.0 V (single supply, 2.7 V to 3.6 V) | The AD9280 tolerates a wider supply range including 5 V systems, while the AD9283 is limited to 3 V nominal operation. |
| Input Type | Single-ended | Differential | Differential inputs improve noise immunity and dynamic performance; single-ended is simpler to drive but more susceptible to common-mode noise. |
| Package | 28-lead SSOP | 20-lead SSOP | Different pin counts and footprints mean the parts are not drop-in replacements on the same PCB layout. |
| Power Consumption | ~95 mW at 32 MSPS | ~90 mW at 50 MSPS | Similar power budgets, but the AD9283 delivers higher throughput per milliwatt, affecting thermal and efficiency design. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both provide parallel CMOS outputs, simplifying digital interface compatibility between the two parts. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings allow 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-RL50 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 32M | 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 | 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-RL50?
The AD9280ARSZ 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 supplied in tape-and-reel format. The AD9283 offers a higher maximum sampling rate (50 MSPS vs 32 MSPS) and a smaller package footprint, whereas the AD9280 provides a 32 MSPS conversion rate in a larger package.
Are the AD9280ARSZ and AD9283BRS-RL50 pin-compatible?
No. The AD9280ARSZ uses a 28-lead SSOP package, and the AD9283BRS-RL50 uses a 20-lead SSOP package. The differing pin counts and package dimensions mean they are not pin-compatible and cannot be dropped into the same PCB land pattern without redesign.
What is the maximum sampling rate of each device?
The AD9280ARSZ has a maximum conversion rate of 32 MSPS, while the AD9283BRS-RL50 supports a maximum sampling rate of 50 MSPS. The AD9283 therefore provides a higher throughput for applications requiring faster digitization.
What is the resolution and typical SNR performance of these ADCs?
Both devices are 8-bit ADCs. The AD9280ARSZ is specified with a signal-to-noise ratio (SNR) of approximately 48 dB for a 1 MHz analog input, and the AD9283BRS-RL50 is specified with an SNR of approximately 46.5 dB at similar input conditions, per Analog Devices datasheet specifications.
What analog input voltage range do the AD9280ARSZ and AD9283BRS-RL50 support?
Both converters accept a 1 V peak-to-peak differential analog input range. The AD9280ARSZ and AD9283BRS-RL50 are designed for differential input drive, which supports their specified dynamic performance at their respective sampling rates.
What power supply voltage and power consumption do these devices require?
Both the AD9280ARSZ and AD9283BRS-RL50 operate from a single 3.0 V to 3.6 V analog supply (nominally 3.3 V) with a separate digital output supply. The AD9280ARSZ typically consumes about 95 mW at 3.3 V and 32 MSPS, while the AD9283BRS-RL50 typically consumes about 90 mW at 3.3 V and 50 MSPS, per Analog Devices datasheet values.
What digital output interface do the AD9280ARSZ and AD9283BRS-RL50 provide?
Both devices provide parallel CMOS-compatible 8-bit digital output data with a dedicated output clock. The digital output supply pins allow the output logic levels to be matched to the receiving logic, and the AD9283BRS-RL50 additionally supports a power-down mode to reduce consumption when not converting.
In what package and packing format is each part supplied?
The AD9280ARSZ is supplied in a 28-lead SSOP package in tube or tray format. The AD9283BRS-RL50 is supplied in a 20-lead SSOP package in tape-and-reel format (the "RL50" suffix denotes 50-piece reel quantity), making it suited to automated surface-mount assembly lines.