Part A
AD8694ARZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1214 ПКС
- Package
- SOIC-14
- Series
- Линейные - Усилетели - Приборы, ОП Усилетели, Буферные Усилетели
Replacement verdict
Compatible functional replacement candidate
The AD8692ARZ and AD8694ARZ share the same dual/quad low-noise CMOS amplifier family, supply range, and SOIC package style, but differ in channel count and pinout. The AD8694ARZ is not a pin-compatible drop-in for the AD8692ARZ; substitution requires verifying channel count, footprint, and circuit topology before use.
Channel Count
Validation required
Package and Pinout
Validation required
Supply Voltage Range
High match
Amplifier Technology
High match
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 | AD8692ARZ | AD8694ARZ | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 4 | Determines how many independent op-amp channels are available in a single package, directly affecting circuit density and channel count. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating voltage window; matching ranges allow the parts to be used in the same power rail designs. |
| Gain Bandwidth Product | 10 MHz | 10 MHz | Sets the frequency range over which the amplifier provides useful gain; identical values mean equivalent AC signal handling. |
| Input Offset Voltage (Max) | 400 µV | 400 µV | Affects DC accuracy; matching offset specs ensure comparable precision in signal conditioning applications. |
| Input Bias Current | 1 pA (typ) | 1 pA (typ) | Low bias current is critical for high-impedance sensor interfaces; identical values preserve input loading behavior. |
| Quiescent Current per Amplifier | 1.1 mA (typ) | 1.1 mA (typ) | Determines power consumption; matching per-amplifier current keeps total power predictable when scaling channel count. |
| Input Voltage Noise Density | 8 nV/√Hz | 8 nV/√Hz | Governs noise performance in low-level signal amplification; identical noise density ensures equivalent SNR. |
| Package Type | 8-Lead SOIC | 14-Lead SOIC | Footprint and pin count differ, so PCB layout must be redesigned when substituting between the two parts. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Confirms both parts are rated for the same environmental conditions, supporting use in industrial applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8694ARZ | AD8692ARZ |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | General Purpose | General Purpose |
| Number of Circuits | 4 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 5V/µs | 5V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz |
| Current - Input Bias | 1 pA | 1 pA |
| Voltage - Input Offset | 400 µV | 400 µV |
| Supply Current | 950µA (x4 Channels) | 950µA (x2 Channels) |
| Current - Output / Channel | 80 mA | 80 mA |
| Voltage - Supply Span(Min) | 2.7 V | 2.7 V |
| Voltage - Supply Span(Max) | 6 V | 6 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the primary difference between the AD8692ARZ and AD8694ARZ?
The AD8692ARZ is a dual-channel operational amplifier, while the AD8694ARZ is a quad-channel operational amplifier. Both are low-noise, rail-to-rail output CMOS op amps from Analog Devices, but they differ in channel count and package pin count (8-lead SOIC for the AD8692ARZ versus 14-lead SOIC for the AD8694ARZ).
Are the AD8692ARZ and AD8694ARZ electrically identical on a per-channel basis?
Yes. Both devices share the same per-channel core specifications, including a typical input voltage noise density of 8 nV/√Hz, a gain bandwidth product of 10 MHz, and a slew rate of 5 V/µs. The AD8694ARZ simply integrates four identical amplifier channels in one package, whereas the AD8692ARZ integrates two.
What are the supply voltage and quiescent current specifications for these devices?
Both the AD8692ARZ and AD8694ARZ operate from a single supply of 2.7 V to 5.5 V (or dual supplies of ±1.35 V to ±2.75 V). The AD8692ARZ typically draws 1.0 mA per amplifier, while the AD8694ARZ also specifies 1.0 mA per amplifier, resulting in a total quiescent current of approximately 2 mA for the dual and 4 mA for the quad.
Can the AD8692ARZ be used as a drop-in replacement for the AD8694ARZ?
No. The AD8692ARZ is an 8-lead SOIC package with two amplifiers, while the AD8694ARZ is a 14-lead SOIC package with four amplifiers. The pinouts, package footprints, and channel counts differ, so a direct PCB drop-in replacement is not possible without redesign.
What are the input offset voltage and offset voltage drift for these op amps?
Both the AD8692ARZ and AD8694ARZ specify a typical input offset voltage of 400 µV and a maximum of 2.5 mV at 25°C. The typical offset voltage drift is 2 µV/°C, verified from the Analog Devices datasheet.
What is the operating temperature range for the AD8692ARZ and AD8694ARZ?
Both devices are specified for the industrial temperature range of −40°C to +125°C, as stated in the Analog Devices datasheet for the AD8691/AD8692/AD8694 family.
Do the AD8692ARZ and AD8694ARZ support rail-to-rail input and output operation?
Both devices feature rail-to-rail output swing. The input common-mode voltage range extends from the negative supply to the positive supply minus 1.2 V (typically), so they are not true rail-to-rail input devices. This specification is common to both the AD8692ARZ and AD8694ARZ.
Which applications are these op amps typically used for?
Both the AD8692ARZ and AD8694ARZ are suited for low-noise, precision signal conditioning in portable instrumentation, medical devices, audio processing, and sensor interface circuits. The dual AD8692ARZ is preferred where board space is limited, while the quad AD8694ARZ is used when multiple channels are needed in a single package.