Part A
AD811JRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2965 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Video Amps and Modules
Replacement verdict
Compatible functional replacement candidate
The AD811JRZ and AD811AR-16 share the same high-speed current-feedback operational amplifier core, making them functionally interchangeable in most video and signal-processing applications. The primary distinction lies in package and thermal characteristics, so the AD811AR-16 can serve as a functional substitute for the AD811JRZ where board layout and thermal conditions permit, with package and thermal validation recommended before committing to a design change.
Amplifier Core and Bandwidth
High match
Package Type
Not compatible
Operating Temperature Range
Validation required
Supply Voltage and Power Dissipation
Validation required
Parts at a glance
Part B
AD811AR-16
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9212 PCS
- Package
- SOIC-16
- Series
- Linear - Amplifiers - Video Amps and Modules
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD811JRZ | AD811AR-16 | Why it matters |
|---|---|---|---|
| Package / Case | 8-Lead SOIC (R-8) | 16-Lead SOIC (R-16) | Different package footprints are not drop-in compatible; the PCB land pattern must match the package. |
| Number of Pins | 8 | 16 | Pin count determines socket and layout compatibility; the two parts cannot be interchanged on the same board. |
| Operating Temperature Range | 0°C to +70°C (commercial) | -40°C to +85°C (industrial) | The industrial-grade version supports wider ambient conditions, affecting suitability for harsh environments. |
| Grade / Temperature Class | J grade (commercial) | A grade (industrial) | Grade suffix indicates tested temperature range and screening level, which impacts reliability requirements. |
| -3 dB Bandwidth | 140 MHz (G = +2) | 140 MHz (G = +2) | Bandwidth defines the maximum signal frequency the amplifier can handle with acceptable gain flatness. |
| Slew Rate | 2500 V/µs | 2500 V/µs | Slew rate limits how fast the output can respond to large signal steps, critical for video and pulse applications. |
| Supply Voltage Range | ±5 V to ±15 V (dual supply) | ±5 V to ±15 V (dual supply) | Supply range determines compatibility with the system power rails and output swing headroom. |
| Input Voltage Noise | 1.9 nV/√Hz | 1.9 nV/√Hz | Low input noise is essential for maintaining signal integrity in low-level or high-gain signal chains. |
| Output Current (Typical) | 100 mA | 100 mA | Output drive capability determines ability to drive low-impedance loads such as cables and video terminations. |
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 | AD811JRZ | AD811AR-16 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Applications | Current Feedback | Current Feedback |
| Number of Circuits | 1 | 1 |
| -3 dB Bandwidth | 140 MHz | 140 MHz |
| Slew Rate | 2500V/µs | 2500V/µs |
| Supply Current | 16.5 mA | 16.5 mA |
| Current - Output / Channel | 100 mA | 100 mA |
| Voltage - Supply, Single/Dual (±) | ±4.5V ~ 18V | ±4.5V ~ 18V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD811JRZ and the AD811AR-16?
The AD811JRZ is supplied in a 16-lead SOIC package (R-16 suffix) specified for the commercial temperature range of 0°C to +70°C, while the AD811AR-16 is supplied in a 16-lead SOIC package specified for the industrial temperature range of −40°C to +85°C. Both are current-feedback operational amplifiers with the same core die and 16-lead SOIC footprint, but they differ in temperature grade and correspondingly in specified electrical limits.
Are the AD811JRZ and AD811AR-16 functionally interchangeable in an existing design?
Functionally, both devices are the same AD811 current-feedback amplifier in a 16-lead SOIC package, so they share pinout and basic AC/DC behavior. However, substitution must account for the temperature grade: the AD811JRZ is rated 0°C to +70°C and the AD811AR-16 is rated −40°C to +85°C. A design requiring industrial temperature operation should use the AD811AR-16, and any substitution should be validated against the manufacturer datasheet limits for the intended operating range.
What is the package and pin configuration of these devices?
Both the AD811JRZ and AD811AR-16 are offered in a 16-lead SOIC (small outline integrated circuit) package. The "R-16" and "R" suffixes in the ordering codes denote the 16-lead SOIC body. Pin functions are identical between the two temperature-grade variants because they use the same die and package outline.
What are the specified operating temperature ranges for each part?
The AD811JRZ is specified over the commercial temperature range of 0°C to +70°C. The AD811AR-16 is specified over the industrial temperature range of −40°C to +85°C. These ranges reflect the grade suffix (J versus A) and determine the guaranteed electrical limits in the datasheet.
What are the key AC and DC specifications of the AD811?
The AD811 is a wideband current-feedback operational amplifier with a −3 dB bandwidth of approximately 140 MHz at a gain of +2 and a slew rate of approximately 2500 V/µs. It provides high output current drive (on the order of 100 mA) and low differential gain and phase error, making it suited to video and high-speed signal processing. Exact guaranteed limits should be taken from the manufacturer datasheet for the specific temperature grade.
Which part should be selected for an industrial-temperature application?
For applications requiring operation below 0°C or above +70°C, the AD811AR-16 should be selected because it is specified over −40°C to +85°C. The AD811JRZ is only specified over 0°C to +70°C and should not be used outside that range if guaranteed performance is required.
Do both parts share the same supply voltage and power requirements?
Yes. Because both are the same AD811 die in the same 16-lead SOIC package, they share the same supply voltage range and quiescent current characteristics as specified in the datasheet. The AD811 typically operates from ±5 V to ±15 V dual supplies. Any differences in guaranteed limits between the J and A grades relate to temperature range rather than to a different supply architecture.