Part A
AD9221ARSZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2958 個数
- Package
- SSOP-28
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9226ARSZRL is a higher-speed, higher-resolution upgrade candidate for the AD9221ARSZ, sharing the same 28-lead SSOP footprint and 5 V supply architecture, but it is not a pin-for-pin drop-in replacement because sampling rate, resolution, and power consumption differ. Designers must revalidate timing margins, clock jitter tolerance, and thermal budget before substituting in existing AD9221ARSZ sockets.
Resolution
Validation required
Sampling Rate
Validation required
Package Type
High match
Power Consumption
Validation required
Parts at a glance
Part B
AD9226ARSZRL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6082 個数
- Package
- SSOP-28
- Series
- データ取得 - アナログ/デジタルコンバータ (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 | AD9226ARSZRL | Why it matters |
|---|---|---|---|
| Resolution | 12 bits | 12 bits | Both are 12-bit ADCs, so nominal quantization resolution is identical and does not differentiate substitutability. |
| Sampling Rate | 1.5 MSPS | 65 MSPS | The maximum conversion rate determines the input signal bandwidth the ADC can support; the AD9226 is far faster and cannot be substituted where the slower AD9221 rate is required without re-evaluating timing. |
| Input Type | Differential (single-ended capable) | Differential (single-ended capable) | Both accept differential inputs with single-ended capability, so analog front-end topology is compatible. |
| Supply Voltage | 5 V analog and digital | 5 V analog and digital | Matching 5 V supplies means power rail design and level compatibility are preserved between the two parts. |
| Power Consumption | ~70 mW typical | ~475 mW typical | The AD9226 dissipates substantially more power, which affects thermal design, supply sizing, and suitability for low-power applications. |
| SNR | ~70 dB | ~69 dB | Signal-to-noise ratio indicates achievable dynamic range; similar values mean comparable noise performance for a given input. |
| Package | 28-lead SSOP | 28-lead SSOP | Identical package and pin count allow the same PCB footprint, though pinout must still be verified for drop-in compatibility. |
| Output Interface | Parallel CMOS | Parallel CMOS | Both provide parallel CMOS outputs, so the digital host interface is functionally compatible. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching industrial temperature ranges mean both parts suit the same environmental conditions. |
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 | AD9221ARSZ | AD9226ARSZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 1.5M | 65M |
| 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 | Internal | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 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 AD9221ARSZ and AD9226ARSZRL?
The AD9221ARSZ is a 12-bit, 1.5 MSPS analog-to-digital converter, while the AD9226ARSZRL is a 12-bit, 65 MSPS ADC. Both are members of Analog Devices' AD922x family and are offered in a 28-lead SSOP (RS) package, but the AD9226ARSZRL provides a significantly higher maximum sampling rate and is supplied in tape-and-reel packaging (RL suffix) for automated assembly.
Do the AD9221ARSZ and AD9226ARSZRL share the same package and pinout?
Yes. Both devices are specified in the same 28-lead SSOP (RS-28) package and are pin-compatible within the AD922x family, which allows a common PCB footprint. Designers should still verify supply decoupling, clock input, and reference configuration against each device's datasheet because the maximum clock rate and power consumption differ.
What are the maximum sampling rates of these two converters?
The AD9221ARSZ has a maximum sampling rate of 1.5 MSPS, and the AD9226ARSZRL has a maximum sampling rate of 65 MSPS. The higher throughput of the AD9226ARSZRL makes it suitable for wider-bandwidth signal chains, while the AD9221ARSZ targets lower-speed, lower-power applications.
Are both parts 12-bit ADCs, and what input range do they support?
Yes, both are 12-bit monolithic ADCs. They offer a differential input with a nominal 2 V peak-to-peak input span and an on-chip reference, with the input range configurable via the reference and sense pins per the respective datasheets. The resolution is identical, so selection is driven primarily by speed, power, and packaging requirements.
How does power consumption compare between the AD9221ARSZ and AD9226ARSZRL?
The AD9221ARSZ typically consumes about 60 mW at 1.5 MSPS, whereas the AD9226ARSZRL typically consumes about 475 mW at 65 MSPS. The higher power of the AD9226ARSZRL reflects its much higher sampling rate; the AD9221ARSZ is preferable where low power is a priority.
What does the "RL" suffix on AD9226ARSZRL indicate?
The "RL" suffix denotes tape-and-reel packaging, which is intended for high-volume automated pick-and-place assembly. The AD9221ARSZ is supplied in standard tube or tray packaging. The electrical performance of the AD9226ARSZRL is the same as the equivalent AD9226ARSZ device; only the shipping format differs.
Can the AD9221ARSZ be used as a drop-in replacement for the AD9226ARSZRL?
No. Although they share the same package and pinout, the AD9221ARSZ is limited to 1.5 MSPS while the AD9226ARSZRL supports 65 MSPS. A design requiring the higher throughput of the AD9226ARSZRL cannot be satisfied by the AD9221ARSZ, and substituting in the other direction would waste performance and power. Replacement must be validated against the system's sampling-rate, power, and timing requirements.
What are typical applications for each converter?
The AD9221ARSZ is suited to low-power, lower-speed data acquisition, portable instrumentation, and battery-powered systems. The AD9226ARSZRL is intended for high-speed signal processing such as medical imaging, CCD/camera digitization, and wideband communications receivers where 65 MSPS throughput is required.