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-50 is a functional replacement candidate for the AD9280ARSZ, sharing an 8-bit pipeline architecture and 28-lead SSOP footprint, but it is not a drop-in equivalent. The AD9283BRS-50 offers a higher 50 MSPS sampling rate versus 32 MSPS, while the AD9280ARSZ provides a wider input bandwidth and flexible input range. Designers must validate clock timing, input drive conditions, and power supply decoupling before substituting in existing layouts.
Resolution and Architecture
High match
Sampling Rate
Validation required
Analog Input Range
Validation required
Package and Pinout
High match
Parts at a glance
Part B
AD9283BRS-50
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2168 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-50 | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit ADCs, so quantization accuracy is equivalent for substitutability. |
| Maximum Sampling Rate | 32 MSPS | 50 MSPS | The AD9283BRS-50 supports a higher conversion 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 AD9280ARSZ tolerates a wider supply range including 5 V, while the AD9283BRS-50 is limited to 3.6 V maximum. |
| Analog Input Range | 1 V p-p to 2 V p-p (configurable) | 1 V p-p | The AD9280ARSZ offers a configurable input span, allowing better adaptation to different signal amplitudes. |
| Power Consumption | 95 mW typical at 32 MSPS | 90 mW typical at 50 MSPS | Lower power per conversion in the AD9283BRS-50 benefits power-sensitive designs despite its higher speed. |
| Package | 28-Lead SSOP | 20-Lead SSOP | Different package footprints and pin counts affect PCB layout and drop-in compatibility. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both use parallel CMOS outputs, simplifying digital interface reuse between the two parts. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings mean both suit the same environmental conditions. |
| SNR (Signal-to-Noise Ratio) | 48 dB typical at 10 MHz input | 46.5 dB typical at Nyquist | Slightly better SNR in the AD9280ARSZ can improve dynamic range in noise-sensitive applications. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9280ARSZ | AD9283BRS-50 |
|---|---|---|
| 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-50?
The AD9280ARSZ is a 32 MSPS, 8-bit analog-to-digital converter with an on-chip sample-and-hold amplifier, specified for 2.7 V to 5.5 V supply operation, and housed in a 28-lead SSOP. The AD9283BRS-50 is a 50 MSPS, 8-bit ADC with an on-chip track-and-hold, specified for 3.0 V supply operation, and housed in a 20-lead SSOP. The primary differences are sampling rate (32 MSPS vs 50 MSPS), supply voltage range, package footprint, and pin count.
Can the AD9280ARSZ and AD9283BRS-50 be used interchangeably in the same PCB design?
No. The two devices differ in package type and pin count (28-lead SSOP for the AD9280ARSZ vs 20-lead SSOP for the AD9283BRS-50), so their footprints and pinouts are not compatible. A direct drop-in replacement is not possible without a PCB redesign.
What are the maximum sampling rates of the AD9280ARSZ and AD9283BRS-50?
The AD9280ARSZ has a maximum sampling rate of 32 MSPS. The AD9283BRS-50 has a maximum sampling rate of 50 MSPS, as indicated by the "50" suffix in its part number.
What supply voltages do the AD9280ARSZ and AD9283BRS-50 require?
The AD9280ARSZ operates from a single supply of 2.7 V to 5.5 V. The AD9283BRS-50 operates from a single 3.0 V supply. Designs must account for these different supply requirements when comparing or migrating between the two parts.
Do both converters provide 8-bit resolution?
Yes. Both the AD9280ARSZ and the AD9283BRS-50 are 8-bit analog-to-digital converters, so their quantization resolution is identical; the differences lie in sampling rate, supply, package, and analog input characteristics.
Which device is better suited for higher-speed signal acquisition?
The AD9283BRS-50 is better suited for higher-speed acquisition because its 50 MSPS maximum sampling rate exceeds the 32 MSPS rate of the AD9280ARSZ, allowing capture of higher-frequency input signals within Nyquist limits.
Are the analog input configurations of the AD9280ARSZ and AD9283BRS-50 the same?
No. The AD9280ARSZ provides a flexible analog input with an on-chip sample-and-hold amplifier supporting a 1 V p-p input span, while the AD9283BRS-50 uses an on-chip track-and-hold with a 1 V p-p differential input. Designers should consult the respective datasheets to match the input drive and biasing requirements.
What package types are used for the AD9280ARSZ and AD9283BRS-50?
The AD9280ARSZ is supplied in a 28-lead SSOP package. The AD9283BRS-50 is supplied in a 20-lead SSOP package. The different lead counts and body sizes affect board layout and thermal considerations.