Part A
AD9220AR
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5982 PCS
- Package
- SOIC-28
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9220ARS is a functionally compatible replacement candidate for the AD9220AR, sharing the same 12-bit ADC core, sampling rate, and analog input characteristics. The primary distinction is the package and temperature grade, so the AD9220ARS can serve as a drop-in functional substitute where the SSOP-28 footprint and industrial temperature range are acceptable.
Resolution and Sampling Rate
High match
Analog Input Range
High match
Package Type
Validation required
Operating Temperature Range
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9220AR | AD9220ARS | Why it matters |
|---|---|---|---|
| Package / Case | 28-Lead SOIC (Wide Body) | 28-Lead SSOP | The package determines the PCB footprint and assembly process; these two parts are not drop-in footprint compatible, so board layout must differ. |
| Resolution | 12 bits | 12 bits | Resolution defines the number of discrete output codes and thus the theoretical quantization step of the converter. |
| Sampling Rate | 10 MSPS | 10 MSPS | Maximum sample rate sets the bandwidth of signals the ADC can digitize without aliasing concerns. |
| Input Type | Differential, single-ended | Differential, single-ended | Input configuration determines how the analog source must be interfaced and whether a driver/transformer is needed. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Supply voltage must match the system rail; identical values mean the same power architecture can be reused. |
| Output Interface | Parallel CMOS | Parallel CMOS | The digital output format must be compatible with the receiving FPGA/ASIC or controller bus. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range confirms suitability for the target environment and industrial-grade applications. |
| Pin Count | 28 | 28 | Although both have 28 pins, the different package body styles mean the pin pitch and land pattern differ, affecting board design. |
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 | AD9220AR | AD9220ARS |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 10M | 10M |
| 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 | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the primary difference between the AD9220AR and AD9220ARS?
The AD9220AR is supplied in a 28-lead SOIC package, while the AD9220ARS is supplied in a 28-lead SSOP package. Both are 12-bit, 10 MSPS analog-to-digital converters from Analog Devices and share the same core specifications; the suffix difference denotes package type only.
Are the AD9220AR and AD9220ARS electrically identical?
Yes. Both variants are the same AD9220 converter die with identical resolution (12 bits), maximum sampling rate (10 MSPS), and analog input range (1 V p-p to 2 V p-p, selectable). The only documented difference is the package outline and its associated thermal and PCB footprint characteristics.
Can the AD9220AR be substituted directly with the AD9220ARS on an existing PCB?
No, not without a PCB redesign. The 28-lead SOIC (AR) and 28-lead SSOP (ARS) have different body widths, lead pitches, and land patterns, so the footprints are not interchangeable even though the pin functions are equivalent.
Do both the AD9220AR and AD9220ARS support the same power supply and reference configuration?
Yes. Both variants operate from a single +5 V analog supply and a +3 V to +5 V digital supply, and both support internal or external voltage reference operation, consistent with the AD9220 datasheet.
Which package should be selected for new designs, the AD9220AR or AD9220ARS?
Selection depends on board space and assembly requirements. The SSOP (AD9220ARS) offers a smaller footprint for space-constrained designs, while the SOIC (AD9220AR) provides wider lead spacing that may be preferred for ease of inspection and rework. Both are specified to the same temperature range and performance grades.
Are the AD9220AR and AD9220ARS rated for the same operating temperature range?
Yes. Both the AR and ARS variants are specified over the industrial temperature range of -40°C to +85°C, as documented in the AD9220 datasheet.
Do the AD9220AR and AD9220ARS differ in AC performance specifications?
No. Because both use the same converter core, key dynamic specifications such as SNR and THD at a given input frequency and sampling rate are equivalent between the two package options; any differences in the datasheet are attributable to package thermal characteristics rather than converter performance.