Part A
AD9226ARSZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5708 PCS
- Package
- SSOP-28
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9226ARSZ is a higher-speed, higher-resolution upgrade path for the AD9221ARSZ, sharing the same 28-lead SSOP footprint and 5 V supply architecture, but it is not a pin-identical drop-in substitute. Designers must re-validate the digital output interface, clock timing, and power dissipation before substituting, since the AD9226ARSZ delivers 12-bit resolution at 65 MSPS versus the AD9221ARSZ's 12-bit resolution at 1.5 MSPS.
Resolution and Sample Rate
Validation required
Package and Pinout
High match
Digital Output Interface
Validation required
Power Dissipation
Validation required
Parts at a glance
Part B
AD9221ARSZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2958 PCS
- Package
- SSOP-28
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | AD9221ARSZ | AD9226ARSZ | Why it matters |
|---|---|---|---|
| Resolution | 12 bits | 12 bits | Both converters provide 12-bit resolution, so quantization noise floor and LSB size are equivalent for a given input range. |
| Maximum Sampling Rate | 1.5 MSPS | 65 MSPS | The AD9226 supports a much higher Nyquist bandwidth, enabling digitization of fast signals that the AD9221 cannot capture. |
| Input Type | Differential (single-ended capable) | Differential (single-ended capable) | Differential inputs improve common-mode rejection and dynamic performance; both parts allow single-ended drive with similar interface circuitry. |
| Analog Input Range | 1 V p-p to 2 V p-p (programmable) | 1 V p-p to 2 V p-p (programmable) | Matching programmable input spans allow the same front-end scaling and reference design to be reused across both parts. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Identical single 5 V supply simplifies power rail design and allows drop-in power compatibility. |
| Power Consumption | ~70 mW typical | ~475 mW typical | The AD9226 dissipates substantially more power due to its higher speed, affecting thermal design and supply current budget. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both provide parallel CMOS outputs, so the digital capture interface and timing structure are compatible. |
| Package | 28-lead SSOP | 28-lead SSOP | Identical package and pinout allow board-level interchangeability without layout changes. |
| SNR (at rated speed) | ~70 dB | ~69 dB | Similar signal-to-noise ratio indicates comparable dynamic range, though the AD9226 maintains it at much higher input frequencies. |
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 | AD9226ARSZ | AD9221ARSZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 65M | 1.5M |
| 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 | Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 2.85V ~ 5.25V | 2.7V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9221ARSZ and AD9226ARSZ?
The AD9221ARSZ is a 12-bit, 1.5 MSPS analog-to-digital converter, while the AD9226ARSZ is a 12-bit, 65 MSPS ADC. Both are monolithic pipelined converters in a 28-lead SSOP package, but the AD9226ARSZ offers a significantly higher maximum sampling rate and correspondingly higher power consumption than the AD9221ARSZ.
Are the AD9221ARSZ and AD9226ARSZ pin-compatible?
Both devices are offered in the same 28-lead SSOP (RS-28) package, but designers must verify the pin function assignments against the respective manufacturer datasheets before considering any board-level interchange, since the two converters are not specified as drop-in replacements for one another.
What is the maximum sampling rate of each converter?
The AD9221ARSZ is specified for a maximum sampling rate of 1.5 MSPS, whereas the AD9226ARSZ is specified for a maximum sampling rate of 65 MSPS. The higher throughput of the AD9226ARSZ makes it suitable for wider-bandwidth signal acquisition applications.
What resolution and output format do these ADCs provide?
Both the AD9221ARSZ and AD9226ARSZ are 12-bit ADCs that provide a parallel CMOS-compatible digital output. The 12-bit resolution is common to both devices, so the primary selection differentiator is sampling rate rather than resolution.
How do the power consumption figures compare?
The AD9221ARSZ typically consumes about 70 mW at 1.5 MSPS, while the AD9226ARSZ typically consumes about 475 mW at 65 MSPS. The higher power of the AD9226ARSZ reflects its much higher conversion throughput, so thermal and supply design must account for the selected device.
What analog input configuration do the AD9221ARSZ and AD9226ARSZ use?
Both converters use a differential analog input with an on-chip sample-and-hold amplifier and are typically driven through a transformer or differential amplifier. The input span is set by the reference and input range configuration, so the drive circuit should be designed per the respective datasheet.
Can the AD9221ARSZ be used as a lower-speed substitute for the AD9226ARSZ?
Substitution is not a direct drop-in and must be validated against the target design. The AD9221ARSZ supports only up to 1.5 MSPS versus 65 MSPS for the AD9226ARSZ, and differences in power, timing, and dynamic performance mean the system clocking, input drive, and digital interface must be re-verified before any replacement.