Part A
AD9226ARSZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5708 PCS
- Package
- SSOP-28
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9226ARSZ is a pin-compatible functional upgrade candidate for the AD9225ARSZ, offering a higher maximum sampling rate and wider analog input bandwidth while preserving the same 12-bit resolution, parallel output interface, and 28-lead SSOP footprint. Designers should validate timing margins and input drive conditions at the higher sample rate before adopting it as a direct substitute.
Resolution and Output Interface
High match
Package and Pinout
High match
Maximum Sampling Rate
Validation required
Analog Input Bandwidth
Validation required
Parts at a glance
Part B
AD9225ARSZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1539 PCS
- Package
- SSOP-28
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | AD9225ARSZ | 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 | 25 MSPS | 65 MSPS | The AD9226 supports a much higher conversion rate, enabling wider input bandwidth and higher oversampling ratios; the AD9225 is limited to 25 MSPS. |
| Input Type | Differential | Differential | Both accept differential inputs, allowing good common-mode rejection and compatibility with differential signal chains. |
| Analog Input Range | 2 V p-p differential | 2 V p-p differential | Identical full-scale input range means the same front-end gain and driver requirements apply to both parts. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Both operate from a single 5 V supply, simplifying power supply design and allowing drop-in compatibility. |
| Power Consumption | Approx. 280 mW | Approx. 475 mW | The higher-speed AD9226 dissipates more power; thermal and supply budgeting must account for the increased consumption. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both provide parallel CMOS output, so the digital interface to an FPGA or DSP is functionally identical. |
| SNR (typical) | Approx. 71 dB | Approx. 69 dB | Slightly better SNR on the AD9225 affects achievable dynamic range and effective number of bits in sensitive applications. |
| Package | 28-lead SSOP | 28-lead SSOP | Identical package and pinout support direct board-level substitution without layout changes. |
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 | AD9225ARSZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 65M | 25M |
| 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 | 2.85V ~ 5.25V | 2.85V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9225ARSZ and AD9226ARSZ?
The AD9225ARSZ is a 12-bit, 25 MSPS analog-to-digital converter, while the AD9226ARSZ is a 12-bit, 65 MSPS ADC. Both are pin-compatible members of the same Analog Devices AD922x family and share the same 28-lead SSOP (RS) package, but the AD9226ARSZ offers a higher maximum sampling rate and correspondingly higher power consumption.
Are the AD9225ARSZ and AD9226ARSZ pin-compatible?
Yes. Both devices are offered in the same 28-lead SSOP (RS-28) package and are designed as pin-compatible family members, allowing a common PCB footprint. Designers should still verify supply decoupling, clock input, and output loading against each device's datasheet when swapping between them.
What are the maximum sampling rates of these two ADCs?
The AD9225ARSZ has a maximum sampling rate of 25 MSPS, and the AD9226ARSZ has a maximum sampling rate of 65 MSPS. Both are 12-bit resolution converters.
Do the AD9225ARSZ and AD9226ARSZ use the same power supply?
Both devices operate from a single 5 V analog supply (AVDD) and a 3 V to 5 V digital supply (DRVDD) for the output interface, consistent with the AD922x family architecture. Actual current consumption differs because the AD9226ARSZ runs at a higher sampling rate; consult each datasheet for exact power figures.
What type of output interface do these ADCs provide?
Both the AD9225ARSZ and AD9226ARSZ provide a 12-bit parallel CMOS-compatible output with an accompanying output clock, and both support a flexible input range via the internal reference or an external reference. The digital output supply (DRVDD) allows interfacing to 3 V or 5 V logic.
Can the AD9226ARSZ directly replace the AD9225ARSZ in an existing design?
Because they are pin-compatible family members in the same package, the AD9226ARSZ can often be dropped into an AD9225ARSZ socket, but it is not a guaranteed drop-in replacement. The higher 65 MSPS rate increases power dissipation and demands more careful clock, layout, and decoupling design, so the replacement must be validated against the AD9226ARSZ datasheet and the target system requirements.
What package do the AD9225ARSZ and AD9226ARSZ use?
Both parts are supplied in the 28-lead SSOP package, denoted by the "RS" suffix in the ordering code. The "Z" suffix indicates RoHS-compliant lead-free construction per Analog Devices ordering conventions.