Part A
AD8510ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1804 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD8510ARZ and AD8512AR are both single/dual precision JFET-input operational amplifiers from the same AD851x family, sharing identical core amplifier characteristics such as low offset voltage, low input bias current, and wide bandwidth. The AD8512AR is a dual-channel device in an 8-lead SOIC package, while the AD8510ARZ is a single-channel device in an 8-lead SOIC package, so the primary distinction is channel count and its associated pinout. For applications requiring a single amplifier, the AD8510ARZ is the direct choice; for dual-channel requirements, the AD8512AR applies. Both are functionally compatible within their respective channel configurations, but board-level pinout and channel-count differences must be validated before substitution.
Channel Count
Not compatible
Package Type
High match
Input Offset Voltage
High match
Gain Bandwidth Product
High match
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8510ARZ | AD8512AR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent signal channels are available in a single package; a dual cannot directly replace a single in a one-channel circuit without layout changes. |
| Input Offset Voltage (max) | 0.8 mV | 0.8 mV | Sets the DC accuracy floor; matching offset specs means both parts introduce similar error at the input for precision signal chains. |
| Input Bias Current (typ) | 25 pA | 25 pA | Very low bias current minimizes errors in high-impedance sensor and photodiode front-ends; identical values preserve input loading behavior. |
| Gain Bandwidth Product | 8 MHz | 8 MHz | Defines the closed-loop bandwidth achievable; equal GBW means comparable AC performance and stability for the same feedback network. |
| Slew Rate | 20 V/µs | 20 V/µs | Governs large-signal transient response; matching slew rate ensures similar behavior for fast pulses and step inputs. |
| Input Voltage Noise Density | 8 nV/√Hz | 8 nV/√Hz | Determines the noise floor of the amplifier; identical noise density keeps SNR performance consistent in low-level signal applications. |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | Defines the allowable power rails; matching ranges allow the same supply design to be reused without rework. |
| Supply Current per Amplifier (typ) | 2.2 mA | 2.2 mA | Affects power budget and thermal design; equal per-amplifier current means predictable power consumption scaling with channel count. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package footprint and pinout must match for board-level interchangeability; both use the same SOIC outline but pin functions differ between single and dual. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8510ARZ | AD8512AR |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 1 | 2 |
| 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 | 100 µV |
| Supply Current | 2.2mA | 2.2mA (x2 Channels) |
| Current - Output / Channel | 70 mA | 70 mA |
| Voltage - Supply Span(Min) | 9 V | 10 V |
| Voltage - Supply Span(Max) | 36 V | 30 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD8510ARZ and the AD8512AR?
The AD8510ARZ is a single precision JFET-input operational amplifier in an 8-lead SOIC package, while the AD8512AR is a dual precision JFET-input operational amplifier in an 8-lead SOIC package. Both share the same core amplifier architecture and similar precision specifications, but the AD8510ARZ contains one amplifier per package and the AD8512AR contains two.
Are the AD8510ARZ and AD8512AR pin-compatible?
No. The AD8510ARZ (single) and AD8512AR (dual) use different pinouts within the same 8-lead SOIC footprint. The single device uses pins for offset null and no second amplifier, while the dual device assigns pins to the second amplifier's inputs and output. They are not drop-in replacements for each other.
Do the AD8510ARZ and AD8512AR have the same input offset voltage specification?
Both are precision JFET-input amplifiers from the same AD851x family and are specified with low input offset voltage in the low-hundreds-of-microvolts range, with the AD8510 single typically offering a trimmed offset voltage around 100 µV maximum at room temperature. Designers should confirm the exact grade-specific limits in the respective manufacturer datasheets before finalizing a design.
What is the input bias current characteristic of these amplifiers?
Both the AD8510ARZ and AD8512AR are JFET-input operational amplifiers featuring very low input bias current, typically in the picoampere range at room temperature. This makes them suitable for high-impedance sensor interfaces and precision sample-and-hold circuits. Exact limits should be verified from the manufacturer datasheet for the specific grade.
Can the AD8512AR be used to replace two AD8510ARZ devices in a design?
Functionally, the AD8512AR provides two amplifiers with comparable precision performance to the AD8510ARZ, so it can often replace two single devices where board space is a concern. However, the pinout, PCB layout, and any offset-null circuitry must be redesigned, and the designer must verify that dual-amplifier crosstalk and thermal behavior meet the application requirements.
What supply voltage range do the AD8510ARZ and AD8512AR support?
Both devices are specified for operation on dual supplies typically ranging from ±4.5 V to ±18 V (or equivalent single-supply configurations within that total range). The exact minimum and maximum supply limits and associated performance specifications should be confirmed in the manufacturer datasheet for each part.
Are the AD8510ARZ and AD8512AR suitable for the same temperature range?
Both are offered in commercial temperature grades with specified operation typically spanning 0°C to +70°C, and industrial-grade versions may extend to −40°C to +85°C or wider depending on the specific orderable part number. The designer should verify the exact temperature grade associated with each ordered part number in the manufacturer documentation.