Part A
AD8205YRZ-R7
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 6907 PCS
- Package
- SOIC-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Replacement verdict
Compatible functional replacement candidate
The AD8205YRZ-R7 and AD8202YR are both high common-mode voltage difference amplifiers from Analog Devices, but they are not drop-in replacements. The AD8205YRZ-R7 offers a wider common-mode input range and higher fixed gain, while the AD8202YR provides a lower fixed gain with a different package and pinout. Designers must validate gain, common-mode range, and board layout before substituting one for the other.
Gain Configuration
Validation required
Common-Mode Input Range
Validation required
Package Type
Not compatible
Supply Voltage Range
Validation required
Parts at a glance
Part B
AD8202YR
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 8724 PCS
- Package
- SOIC-8
- Series
- 선형 증폭기 - 계측기, 연산 증폭기, 완충 증폭기
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8205YRZ-R7 | AD8202YR | Why it matters |
|---|---|---|---|
| Number of Channels | 1 | 1 | Both are single-channel difference amplifiers, so channel count is functionally equivalent. |
| Gain | 20 V/V | 10 V/V | Fixed gain determines the output scaling for a given differential input; a 2x difference changes signal amplitude and system calibration. |
| Input Common-Mode Voltage Range | -2 V to +65 V | -2 V to +28 V | The common-mode range limits the bus or rail voltages the amplifier can monitor; the AD8205 supports much higher-voltage rails. |
| Supply Voltage Range | 4.5 V to 5.5 V | 3.5 V to 12 V | Supply range affects compatibility with the system power rail; the AD8202 tolerates a wider supply span. |
| Supply Current (Typical) | 1.6 mA | 1.0 mA | Quiescent current impacts power budget, especially in always-on sensing applications. |
| Input Offset Voltage (Max) | ±1 mV | ±1 mV | Offset voltage directly limits DC measurement accuracy; both parts offer comparable offset performance. |
| Bandwidth (-3 dB) | 50 kHz | 50 kHz | Bandwidth determines the maximum signal frequency the amplifier can accurately process; both are matched here. |
| CMRR (Typical) | 80 dB | 80 dB | Common-mode rejection ratio determines how well the amplifier rejects unwanted common-mode signals; both are equivalent. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range defines the environments in which the part can reliably operate; both cover the industrial range. |
| Package / Mounting | 8-SOIC (Surface Mount) | 8-SOIC (Surface Mount) | Package and mounting style affect PCB footprint and assembly compatibility; both use the same 8-SOIC footprint. |
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 | AD8205YRZ-R7 | AD8202YR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Amplifier Type | Differential | Differential |
| Number of Circuits | 1 | 1 |
| Slew Rate | 0.5V/µs | 0.28V/µs |
| Gain Bandwidth Product | - | 50 kHz |
| Current - Input Bias | - | 40 nA |
| Voltage - Input Offset | 2 mV | 1 mV |
| Supply Current | 2mA | 250µA |
| Voltage - Supply Span(Min) | 4.5 V | 3.5 V |
| Voltage - Supply Span(Max) | 5.5 V | 12 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| -3 dB Bandwidth | 50 kHz | - |
Frequently asked questions
What are the primary functional differences between the AD8205YRZ-R7 and the AD8202YR?
The AD8205YRZ-R7 is a single-channel, high common-mode voltage, bidirectional current-sense amplifier designed for applications such as motor control and solenoid control. The AD8202YR is a single-channel, high common-mode voltage, unidirectional current-sense amplifier with a fixed gain of 20 V/V, typically used in automotive and industrial current sensing. The AD8205 offers a gain of 20 V/V and supports bidirectional current flow, while the AD8202 is unidirectional with a fixed gain of 20 V/V.
Are the AD8205YRZ-R7 and AD8202YR pin-compatible?
No. The AD8205YRZ-R7 is supplied in an 8-lead SOIC package (YRZ suffix), while the AD8202YR is supplied in an 8-lead SOIC package as well, but the pin functions differ due to the bidirectional versus unidirectional architecture. The AD8205 includes a reference pin and output offset configuration that differs from the AD8202, so they are not direct drop-in replacements.
What is the common-mode input voltage range for each device?
The AD8205YRZ-R7 operates with a common-mode input voltage range of −2 V to +65 V, making it suitable for high-side current sensing in 48 V and higher bus systems. The AD8202YR operates with a common-mode input voltage range of −2 V to +28 V, appropriate for 12 V and 24 V automotive and industrial rails.
Can the AD8202YR be used in bidirectional current-sensing applications?
No. The AD8202YR is a unidirectional current-sense amplifier; it measures current in one direction only. For bidirectional current sensing, the AD8205YRZ-R7 is the appropriate choice, as it supports both positive and negative current flow through its output offset configuration.
What are the supply voltage requirements for the AD8205YRZ-R7 and AD8202YR?
Both devices operate from a single supply voltage of 4.5 V to 5.5 V. The AD8205YRZ-R7 and AD8202YR are specified for 5 V operation and are not designed for higher supply voltages.
Which device is better suited for automotive current-sensing applications?
Both devices are used in automotive applications, but the AD8202YR is specifically qualified for automotive use with an extended temperature range of −40°C to +125°C and is AEC-Q100 qualified. The AD8205YRZ-R7 is specified over the industrial temperature range of −40°C to +125°C and is commonly used in automotive motor control and solenoid control, but designers should verify the specific qualification level required for their application.
What is the gain configuration of each amplifier?
The AD8205YRZ-R7 has a fixed gain of 20 V/V. The AD8202YR also has a fixed gain of 20 V/V. Both devices provide a fixed gain, so external gain-setting resistors are not required.
What package options are available for the AD8205YRZ-R7 and AD8202YR?
The AD8205YRZ-R7 is available in an 8-lead SOIC package (YRZ designation) and is supplied in tape and reel (R7). The AD8202YR is available in an 8-lead SOIC package (YR designation). Both are surface-mount SOIC packages, but the specific pinouts differ and should be verified against the respective datasheets before layout.