Part A
AD8264ACPZ
ADI公司
- Lifecycle
- Active
- Stock
- 4498 件
- Package
- LFCSP-40
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
Replacement verdict
Compatible functional replacement candidate
The AD8264ACPZ and AD8260ACPZ-WP are both quad-channel, low-power, high-speed amplifiers from Analog Devices, but they differ in their primary function and signal path architecture. The AD8264ACPZ is a quad variable-gain amplifier (VGA) with differential outputs, while the AD8260ACPZ-WP is a dual-channel, digitally controlled VGA with an integrated preamplifier and a fixed-gain output amplifier. Although they share a common package and supply voltage range, the AD8260ACPZ-WP is not a direct drop-in replacement for the AD8264ACPZ due to differences in channel count, output configuration, and control interface. Designers should carefully evaluate the specific signal chain requirements before considering substitution.
Channel Count
Validation required
Output Type
Not compatible
Control Interface
Validation required
Package Type
High match
Parts at a glance
Part B
AD8260ACPZ-WP
ADI公司
- Lifecycle
- Active
- Stock
- 5654 件
- Package
- WFQFN-32
- Series
- 線性放大器-儀器、運算放大器、緩衝放大器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8264ACPZ | AD8260ACPZ-WP | Why it matters |
|---|---|---|---|
| Number of Channels | 4 (quad VGA) | 1 (single VGA + driver) | Channel count determines how many independent signal paths can be processed; a quad device cannot be directly substituted where a single-channel function is required without redesign. |
| Primary Function | Quad variable gain amplifier (VGA) with differential output | Variable gain amplifier with integrated high-current driver | The core signal-chain role differs; the AD8260 integrates a line driver stage, while the AD8264 is a multi-channel VGA, affecting functional substitutability. |
| Bandwidth (-3 dB) | ~100 MHz | ~100 MHz (VGA); driver bandwidth lower | Bandwidth limits the maximum signal frequency the device can pass with acceptable gain flatness, critical for high-speed signal processing. |
| Gain Range | 0 dB to +24 dB (typical) | -10 dB to +30 dB (typical) | The available gain adjustment range determines the dynamic range and signal scaling capability of the amplifier in the application. |
| Output Type | Differential | Single-ended (driver output) | Differential versus single-ended outputs affect noise immunity, interface compatibility, and downstream ADC/driver requirements. |
| Supply Voltage | ±5 V (dual supply) | ±5 V (dual supply) | Supply voltage compatibility ensures the device can operate in the same power rail environment without additional regulation. |
| Package | 32-lead LFCSP | 32-lead LFCSP | Package footprint and pinout determine whether a drop-in replacement is possible on an existing PCB. |
| Integrated Driver | No | Yes (high-current line driver) | An integrated driver reduces external component count and board space; its absence in the AD8264 requires an external driver stage. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range confirms suitability for industrial and commercial environments and must match the application's environmental requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8264ACPZ | AD8260ACPZ-WP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Analog Devices Inc. |
| Part Status | Active | Active |
| Amplifier Type | Variable Gain | Variable Gain |
| Number of Circuits | 4 | 1 |
| Output Type | Differential | Differential |
| Slew Rate | 380V/µs | 730V/µs |
| -3 dB Bandwidth | 235 MHz | 195 MHz |
| Current - Input Bias | 5 µA | 200 nA |
| Supply Current | 99mA | 28.3mA |
| Current - Output / Channel | - | 310 mA |
| Voltage - Supply Span(Min) | 4.5 V | 3.3 V |
| Voltage - Supply Span(Max) | 10 V | 10 V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AD8264ACPZ and AD8260ACPZ-WP?
The AD8264ACPZ is a quad-channel, low-power, high-speed operational amplifier with a fixed gain of 2, while the AD8260ACPZ-WP is a dual-channel, low-power, high-speed operational amplifier with a fixed gain of 2 and an integrated 75 MHz programmable gain amplifier (PGA) and a 100 MHz low-pass filter. The AD8264 is optimized for driving differential ADCs in applications such as ultrasound and instrumentation, whereas the AD8260 is designed for baseband signal processing in communications and industrial systems.
Are the AD8264ACPZ and AD8260ACPZ-WP pin-compatible?
No, they are not pin-compatible. The AD8264ACPZ is a 24-lead LFCSP package, while the AD8260ACPZ-WP is a 32-lead LFCSP package. The pin counts and pin functions differ, so they cannot be used interchangeably on the same PCB footprint without redesign.
Can the AD8264ACPZ be used as a direct replacement for the AD8260ACPZ-WP in an existing design?
No. The AD8264ACPZ lacks the integrated PGA and low-pass filter found in the AD8260ACPZ-WP, and the package and pinout are different. A direct replacement is not possible; the circuit would require significant redesign to accommodate the different functionality and footprint.
What are the supply voltage requirements for the AD8264ACPZ and AD8260ACPZ-WP?
Both devices operate from a single 5 V supply (or dual ±2.5 V supplies). The AD8264ACPZ specifies a supply range of 4.5 V to 5.5 V, and the AD8260ACPZ-WP specifies a supply range of 4.5 V to 5.5 V. Always refer to the respective datasheets for exact operating conditions and absolute maximum ratings.
Which device is better suited for driving high-speed ADCs?
The AD8264ACPZ is specifically optimized for driving high-speed differential ADCs, offering low distortion and high output drive capability. The AD8260ACPZ-WP, with its integrated PGA and filter, is more suited for signal conditioning in baseband applications. For pure ADC driving, the AD8264ACPZ is the more appropriate choice based on its published specifications.
Do both devices support differential signal processing?
Yes. The AD8264ACPZ provides differential outputs and is designed for differential signal chains. The AD8260ACPZ-WP also supports differential signal processing through its PGA and filter stages. However, the AD8260ACPZ-WP includes additional programmable gain and filtering functions not present in the AD8264ACPZ.
What are the package and temperature range specifications for these devices?
The AD8264ACPZ is offered in a 24-lead LFCSP package and is specified over the industrial temperature range of −40°C to +85°C. The AD8260ACPZ-WP is offered in a 32-lead LFCSP package and is also specified over the industrial temperature range of −40°C to +85°C. Both are RoHS-compliant. Verify final package and temperature grades against the official manufacturer datasheets before design.