Part A
AD8512ARZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2506 ПКС
- Package
- SOIC-8
- Series
- Линейные - Усилетели - Приборы, ОП Усилетели, Буферные Усилетели
Replacement verdict
Compatible functional replacement candidate
The AD8512ARZ and AD8510BR are both dual/quad precision JFET-input operational amplifiers from the same Analog Devices AD851x family, sharing comparable supply voltage ranges, low input bias current, and similar bandwidth characteristics. While the AD8512ARZ is a dual-channel device and the AD8510BR is a single-channel device, they are functionally compatible for designs where channel count and package footprint can be adapted, making the AD8510BR a viable functional replacement candidate for the AD8512ARZ in single-channel applications.
Channel Count
Validation required
Supply Voltage Range
High match
Input Bias Current
High match
Package Type
Validation required
Parts at a glance
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8512ARZ | AD8510BR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 (Dual) | 1 (Single) | Determines channel count; a dual cannot directly replace a single in a one-channel circuit without layout changes, and vice versa. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Pinout and footprint differ between single and dual op-amps even in the same package, so board layout compatibility must be checked. |
| Input Offset Voltage (max) | 0.8 mV | 0.4 mV | Lower offset reduces DC error in precision signal chains; the B-grade single offers tighter offset than the dual. |
| Input Bias Current (typ) | 25 pA | 25 pA | Very low bias current suits high-impedance sensors; both are JFET-input and comparable here. |
| Gain Bandwidth Product | 8 MHz | 8 MHz | Sets the achievable closed-loop bandwidth and small-signal speed; identical values mean similar AC performance. |
| Slew Rate | 20 V/µs | 20 V/µs | Governs large-signal transient response and full-power bandwidth; matching slew rates support similar dynamic behavior. |
| Supply Voltage Range | ±5 V to ±15 V (dual supply) | ±5 V to ±15 V (dual supply) | Defines allowable operating rails; identical ranges allow use in the same power architecture. |
| Input Voltage Noise Density | 8 nV/√Hz (at 1 kHz) | 8 nV/√Hz (at 1 kHz) | Affects noise floor in low-level signal amplification; equal noise density means comparable SNR performance. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms industrial temperature suitability; matching ranges support use in the same environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8512ARZ | AD8510BR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 2 | 1 |
| Slew Rate | 20V/µs | 20V/µs |
| Gain Bandwidth Product | 8 MHz | 8 MHz |
| Current - Input Bias | 25 pA | 25 pA |
| Voltage - Input Offset | 100 µV | 80 µV |
| Supply Current | 2.2mA (x2 Channels) | 2.2mA |
| Current - Output / Channel | 70 mA | 70 mA |
| Voltage - Supply Span(Min) | 10 V | 9 V |
| Voltage - Supply Span(Max) | 30 V | 36 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the AD8512ARZ and the AD8510BR?
The AD8512ARZ is a dual, low-noise, low-input-bias-current operational amplifier in an 8-lead SOIC package, while the AD8510BR is a single, low-noise, low-input-bias-current operational amplifier in an 8-lead SOIC package. The AD8512ARZ integrates two amplifiers per package, whereas the AD8510BR contains one amplifier. Both are members of the AD851x family and share similar precision JFET-input characteristics, but they differ in channel count and package pinout.
Are the AD8512ARZ and AD8510BR pin-compatible?
No. The AD8512ARZ is a dual op amp in an 8-lead SOIC with both amplifiers' inputs and outputs assigned to the eight pins, while the AD8510BR is a single op amp in an 8-lead SOIC that uses the standard single-op-amp pinout including null pins. Because the pin functions differ, they are not drop-in replacements for each other on the same PCB footprint.
Can the AD8510BR be used as a substitute for one channel of the AD8512ARZ?
Functionally, one channel of the AD8512ARZ and the AD8510BR are both low-noise JFET-input op amps with similar input bias current and voltage-noise characteristics, so the AD8510BR can serve as a single-channel equivalent in many designs. However, substitution requires verifying the specific grade's offset voltage, bandwidth, and package pinout against the AD8512ARZ datasheet, and the PCB layout must be redesigned for the single-op-amp pinout.
What are the input bias current and input offset voltage specifications for these parts?
Both the AD8512ARZ and AD8510BR are JFET-input op amps with very low input bias current, typically in the picoampere range, making them suitable for high-impedance sensor interfaces. Input offset voltage differs by grade: the AD8512ARZ (A grade) and AD8510BR (B grade) are specified with different maximum offset voltage limits per the respective manufacturer datasheets, so the exact grade-specific limits should be confirmed from the official Analog Devices datasheets before design sign-off.
Which part is better for a dual-channel signal chain requiring two matched amplifiers?
The AD8512ARZ is the appropriate choice because it provides two amplifiers in a single 8-lead SOIC package, saving board space and offering matched channels on the same die. The AD8510BR is a single amplifier and would require two packages for a dual-channel signal chain, increasing footprint and part count.
Do both parts share the same supply voltage range and operating temperature range?
Both devices are members of the AD851x family and are specified for dual-supply operation in the ±5 V to ±15 V range (or equivalent single-supply rails) with an extended industrial temperature range. Exact limits, including minimum and maximum supply voltages and the specified temperature range, should be verified against the official Analog Devices datasheets for each grade, as the A and B grades may carry different guaranteed specifications.
What package type do the AD8512ARZ and AD8510BR use?
Both the AD8512ARZ and AD8510BR are supplied in the 8-lead SOIC (Small Outline Integrated Circuit) package, denoted by the "R" suffix in the part number. The "Z" suffix on the AD8512ARZ indicates RoHS-compliant lead-free construction, and the AD8510BR is likewise available in RoHS-compliant packaging per the manufacturer's ordering guide.
Are these amplifiers suitable for low-noise precision applications?
Yes. Both the AD8512ARZ and AD8510BR are low-noise JFET-input operational amplifiers with low voltage noise and very low input bias current, making them well suited for precision, high-impedance, and low-noise signal-conditioning applications such as photodiode amplification, active filters, and instrumentation front ends. Designers should confirm the specific noise density and bandwidth figures from the official datasheets for the exact grade used.