Part A
AD9280ARSZ
ADI公司
- Lifecycle
- Active
- Stock
- 6537 件
- Package
- SSOP-28
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The AD9283BRS-80 is a viable functional replacement candidate for the AD9280ARSZ in 8-bit ADC applications, sharing core resolution and analog input architecture while differing in sampling rate, supply voltage, and package footprint. Designers must validate timing margins, supply rail compatibility, and board layout before adopting the AD9283BRS-80 as a substitute.
Resolution
High match
Sampling Rate
Validation required
Supply Voltage
Not compatible
Package Type
Not compatible
Parts at a glance
Part B
AD9283BRS-80
ADI公司
- Lifecycle
- Active
- Stock
- 9840 件
- Package
- SSOP-20
- Series
- 資料獲取-模數轉換器（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-80 | 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 | 80 MSPS | The AD9283BRS-80 supports a much higher conversion rate, enabling wider signal bandwidths; the AD9280ARSZ is limited to lower-speed applications. |
| 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-80 is restricted to 3.3 V-class rails. |
| Analog Input Range | 1 V p-p to 2 V p-p (configurable) | 1 V p-p | The AD9280ARSZ offers a flexible input span, whereas the AD9283BRS-80 has a fixed 1 V p-p range, affecting interface design with the signal source. |
| Power Consumption | ~95 mW at 32 MSPS | ~90 mW at 80 MSPS | Power budget differs; the AD9283BRS-80 delivers higher speed at comparable power, which matters for thermally constrained designs. |
| 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. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both provide parallel CMOS outputs, so digital interface compatibility is maintained. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings allow use in the same environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9280ARSZ | AD9283BRS-80 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 32M | 80M |
| 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-80?
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 is housed in a 28-lead SSOP. The AD9283BRS-80 is an 8-bit, 80 MSPS ADC with an on-chip track-and-hold, specified for 3.0 V supply operation, and is housed in a 20-lead SSOP. The primary differences are sampling rate (32 MSPS vs. 80 MSPS), supply voltage range, package/pin count, and power consumption.
Can the AD9280ARSZ and AD9283BRS-80 be used interchangeably in the same socket?
No. The two devices have different package types and pin counts (28-lead SSOP for the AD9280ARSZ vs. 20-lead SSOP for the AD9283BRS-80), different pinouts, and different supply voltage requirements. They are not pin-compatible and cannot be dropped into the same PCB footprint without redesign.
What are the maximum sampling rates of the AD9280ARSZ and AD9283BRS-80?
The AD9280ARSZ has a maximum sampling rate of 32 MSPS. The AD9283BRS-80 has a maximum sampling rate of 80 MSPS. The AD9283BRS-80 therefore supports higher-speed signal acquisition, while the AD9280ARSZ targets lower-speed, lower-power applications.
What supply voltages do the AD9280ARSZ and AD9283BRS-80 require?
The AD9280ARSZ operates from a single supply of 2.7 V to 5.5 V. The AD9283BRS-80 operates from a single 3.0 V supply. Designs migrating between the two must verify that the board supply rail and associated analog input range meet the respective device specifications.
How do the power consumption figures compare between the AD9280ARSZ and AD9283BRS-80?
The AD9280ARSZ typically consumes about 95 mW at 32 MSPS from a 3.0 V supply. The AD9283BRS-80 typically consumes about 90 mW at 80 MSPS from a 3.0 V supply. Despite the higher sampling rate, the AD9283BRS-80 offers comparable or lower typical power consumption, making it attractive for power-sensitive high-speed designs.
What are the analog input configurations of the AD9280ARSZ and AD9283BRS-80?
Both devices provide an on-chip sample-and-hold (track-and-hold) amplifier and accept analog input signals. The AD9280ARSZ offers a flexible input range that can be configured for either 1 V p-p or 2 V p-p, depending on the reference and input configuration. The AD9283BRS-80 has a 1 V p-p analog input range. Designers should confirm the exact input span and common-mode requirements from the respective datasheets.
Which device is better suited for high-speed digitization applications?
The AD9283BRS-80 is better suited for high-speed digitization because its 80 MSPS sampling rate supports input signal bandwidths up to approximately 40 MHz per Nyquist criteria, whereas the AD9280ARSZ at 32 MSPS supports bandwidths up to approximately 16 MHz. For applications requiring wider signal bandwidth, the AD9283BRS-80 is the appropriate choice.
What package and operating temperature range do the AD9280ARSZ and AD9283BRS-80 support?
The AD9280ARSZ is supplied in a 28-lead SSOP package and is specified over the industrial temperature range of -40°C to +85°C. The AD9283BRS-80 is supplied in a 20-lead SSOP package and is also specified over the industrial temperature range of -40°C to +85°C. Both are RoHS-compliant, as indicated by the "Z" suffix in the part numbers.