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 is a functionally compatible replacement candidate for the AD811JR, differing only in the RoHS-compliant package finish. Both parts share identical die, pinout, and electrical specifications, so the AD811JRZ can be used wherever the AD811JR is specified, provided the assembly process is qualified for lead-free (Pb-free) termination finish.
Function and Topology
High match
Pinout and Footprint
High match
Electrical Specifications
High match
Package Finish and Soldering
Validation required
Parts at a glance
Part B
AD811JR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6984 PCS
- 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 | AD811JR | Why it matters |
|---|---|---|---|
| Amplifier Type | Current Feedback | Current Feedback | Both parts use the same current-feedback topology, so AC performance and feedback network design remain consistent. |
| Number of Circuits | 1 | 1 | Single-channel configuration ensures pin function and channel count are interchangeable. |
| -3dB Bandwidth | 140 MHz | 140 MHz | Identical bandwidth means signal fidelity and frequency response are preserved when substituting. |
| Slew Rate | 2500 V/µs | 2500 V/µs | Matching slew rate ensures large-signal transient behavior remains the same. |
| Supply Voltage Range | ±4.5 V to ±18 V | ±4.5 V to ±18 V | Same supply range allows the parts to operate in the same power rails without redesign. |
| Input Offset Voltage | 3 mV (max) | 3 mV (max) | Equal offset voltage limits ensure DC accuracy is unaffected by the substitution. |
| Package / Mounting | 8-SOIC (RoHS-compliant) | 8-SOIC (non-RoHS) | Same footprint and pinout allow drop-in replacement, but RoHS compliance differs for regulatory and soldering requirements. |
| Operating Temperature Range | 0°C to 70°C | 0°C to 70°C | Identical temperature ratings confirm suitability for the same commercial environments. |
| RoHS Status | RoHS Compliant | Non-RoHS (contains lead) | RoHS compliance affects environmental regulations and solder process compatibility; the Z suffix denotes the lead-free variant. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD811JRZ | AD811JR |
|---|---|---|
| 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 |
| Mounting Type | Surface Mount | Surface Mount |
| Base Product Number | - | AD811 |
| Voltage - Supply, Single/Dual (±) | ±4.5V ~ 18V | - |
Frequently asked questions
What is the difference between the AD811JRZ and the AD811JR?
The AD811JRZ and AD811JR are both Analog Devices AD811 high-speed current-feedback operational amplifiers in an 8-lead SOIC package. The primary difference is the suffix: the "Z" designation indicates RoHS-compliant, lead-free (Pb-free) construction, while the AD811JR is the non-RoHS, lead-containing (Pb) version. Electrical performance is otherwise equivalent per the datasheet.
Are the AD811JRZ and AD811JR electrically interchangeable?
Yes. Both parts share the same AD811 die and specified electrical performance, including 140 MHz bandwidth (G = +2), 2500 V/µs slew rate, and 60 ns settling time to 0.1%. The only documented difference is the RoHS/lead-free status of the package finish, so they are functionally interchangeable in circuit design.
Is the AD811JRZ a drop-in replacement for the AD811JR?
Yes, from a footprint and function standpoint. Both are offered in the same 8-lead SOIC (R-8) package with identical pinout, so the AD811JRZ can replace the AD811JR on an existing PCB. The substitution should be validated against the target design and any RoHS compliance requirements of the end product.
Which part should be selected for RoHS-compliant designs?
The AD811JRZ should be selected for RoHS-compliant designs, as the "Z" suffix denotes lead-free, RoHS-compliant packaging. The AD811JR is the non-RoHS version and is not suitable where RoHS compliance is mandated.
What are the key specifications shared by the AD811JRZ and AD811JR?
Both devices are current-feedback op amps specified with 140 MHz bandwidth at G = +2, 2500 V/µs slew rate, 0.1 dB flatness to 35 MHz, 60 ns settling time to 0.1%, and low differential gain/phase error of 0.01%/0.01°. They operate on ±5 V to ±15 V supplies and are specified over the 0°C to +70°C commercial temperature range (J grade).
Do the AD811JRZ and AD811JR differ in operating temperature range or package?
No. Both are J-grade commercial parts rated for 0°C to +70°C and are supplied in the same 8-lead SOIC package. Neither the temperature grade nor the package outline differs between the two orderable part numbers.
Can the AD811JRZ and AD811JR be used in the same socket on a production board?
Yes. Because both parts use the identical 8-lead SOIC footprint and pinout, either can be placed in the same PCB land pattern. The choice between them is driven by RoHS/lead-free compliance requirements rather than mechanical or electrical compatibility.