Part A
AD9220AR
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5982 ПКС
- Package
- SOIC-28
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD9225AR is a higher-speed functional upgrade to the AD9220AR, sharing the same 12-bit resolution, 28-lead SSOP footprint, and 5 V supply architecture. Both are pin-compatible analog-to-digital converters, but the AD9225AR delivers a faster maximum sampling rate, making it suitable as a drop-in replacement where higher throughput is required, provided the downstream digital interface and clocking can accommodate the increased conversion rate.
Resolution
High match
Package Type
High match
Supply Voltage
High match
Maximum Sampling Rate
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 | AD9225AR | Why it matters |
|---|---|---|---|
| Resolution | 12 bits | 12 bits | Both converters provide the same quantization resolution, so accuracy in terms of LSB size is equivalent for a given input range. |
| Maximum Sampling Rate | 10 MSPS | 25 MSPS | The AD9225 supports a much higher throughput, which determines the maximum input signal bandwidth and system update rate achievable. |
| Input Type | Differential (single-ended capable) | Differential (single-ended capable) | Both accept differential inputs, enabling good common-mode rejection and compatibility with differential signal chains. |
| Analog Input Range | 1 V p-p to 2 V p-p (selectable) | 1 V p-p to 2 V p-p (selectable) | Matching input ranges allow the same front-end driver and biasing network to be reused without redesign. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Identical supply requirements mean the same power rail and decoupling scheme can be used for either part. |
| Output Interface | Parallel CMOS | Parallel CMOS | The same parallel CMOS output format allows direct drop-in connection to the same digital backend or FPGA. |
| Power Consumption (typical) | ~85 mW | ~105 mW | Lower power in the AD9220 benefits thermally constrained or battery-powered designs, while the AD9225 trades power for speed. |
| Signal-to-Noise Ratio (SNR) | ~70 dB | ~71 dB | SNR sets the achievable dynamic range; a small difference affects noise floor and effective number of bits in sensitive applications. |
| Package | 28-lead SOIC | 28-lead SOIC | Package and pinout compatibility determine whether the parts are physically interchangeable on an existing PCB footprint. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9220AR | AD9225AR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 10M | 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 | 2.7V ~ 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 AD9220AR and AD9225AR?
The AD9220AR is a 12-bit, 10 MSPS analog-to-digital converter, while the AD9225AR is a 12-bit, 25 MSPS ADC. Both are monolithic pipelined ADCs from Analog Devices in a 28-lead SOIC package, but the AD9225AR offers a higher maximum sampling rate (25 MSPS vs 10 MSPS) and correspondingly higher power consumption.
Do the AD9220AR and AD9225AR share the same package and pinout?
Yes. Both devices are offered in a 28-lead SOIC (R-28) package with the same pin configuration, allowing board-level interchangeability when the sampling-rate and power requirements of the target design are satisfied.
What is the resolution and sampling rate of each device?
Both the AD9220AR and AD9225AR provide 12-bit resolution. The AD9220AR has a maximum sampling rate of 10 MSPS, and the AD9225AR has a maximum sampling rate of 25 MSPS.
How do the power consumption figures compare?
The AD9220AR typically dissipates about 100 mW at 10 MSPS, while the AD9225AR typically dissipates about 280 mW at 25 MSPS. The higher power of the AD9225AR reflects its higher sampling rate.
What is the analog input range and supply voltage for these ADCs?
Both devices operate from a single 5 V analog supply and a 3 V to 5 V digital supply. They provide a differential analog input with a nominal 2 V peak-to-peak input span, configurable via the internal reference or an external reference.
Can the AD9220AR be replaced by the AD9225AR in an existing design?
Because both parts share the same 28-lead SOIC pinout and 12-bit resolution, the AD9225AR can be considered a drop-in replacement for the AD9220AR provided the design accommodates the higher power dissipation (approximately 280 mW vs 100 mW) and the higher maximum sampling rate is acceptable or clocked appropriately.
What are the typical applications for the AD9220AR and AD9225AR?
Both ADCs are suited for imaging, instrumentation, communications, and data-acquisition systems. The AD9220AR is typically used in lower-speed, power-sensitive applications, while the AD9225AR is used where higher sampling rates up to 25 MSPS are required.
What is the operating temperature range for these devices?
Both the AD9220AR and AD9225AR are specified for the industrial temperature range of -40°C to +85°C.