Part A
AD7892BRZ-1
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6270 Stückzahl
- Package
- SOP-24
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Replacement verdict
Not a drop-in replacement
The AD7892BRZ-1 and AD7895AR-10 are both 12-bit successive-approximation ADCs from Analog Devices, but they differ in resolution architecture, input configuration, package footprint, and throughput, so the AD7895AR-10 cannot serve as a direct drop-in substitute for the AD7892BRZ-1 without circuit and layout redesign.
Different input configuration
Different package footprint
Different throughput rate
Different interface timing
Parts at a glance
Part B
AD7895AR-10
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 43 Stückzahl
- Package
- SOIC-8
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7892BRZ-1 | AD7895AR-10 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both are 12-bit ADCs, so nominal quantization resolution is equivalent for substitutability. |
| Number of Input Channels | 2 (single-ended) | 1 (single-ended) | Channel count determines how many analog signals can be sampled; the AD7892 offers two channels versus one on the AD7895. |
| Sampling Rate | 500 kSPS | 200 kSPS | Maximum throughput affects the bandwidth of signals that can be digitized; the AD7892 is significantly faster. |
| Input Voltage Range | ±10 V (bipolar) | 0 V to 2.5 V (unipolar) | Input range must match the sensor or signal amplitude; bipolar ±10 V versus unipolar 0–2.5 V changes front-end conditioning requirements. |
| Interface Type | Parallel | Serial (SPI/QSPI compatible) | The digital interface must match the host controller; parallel versus serial affects pin count and firmware. |
| Supply Voltage | 5 V | 5 V | Both operate from a single 5 V supply, simplifying power-rail compatibility. |
| Package | 20-Lead SOIC | 8-Lead SOIC | Package footprint and pin count affect PCB layout and cannot be directly swapped without redesign. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both cover the industrial temperature range, so environmental compatibility is equivalent. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7892BRZ-1 | AD7895AR-10 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 500k | 192k |
| Number of A/D Converters | 1 | 1 |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Number of Inputs | 2 | - |
| Input Type | Single Ended | - |
| Data Interface | SPI, Parallel | - |
| Configuration | S/H-ADC | - |
| Ratio - S / H: ADC | 1:1 | - |
| Architecture | SAR | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 5V | - |
| Voltage - Supply, Digital | 5V | - |
Frequently asked questions
What are the key differences between the AD7892BRZ-1 and the AD7895AR-10?
The AD7892BRZ-1 is a 12-bit, 500 kSPS successive-approximation ADC with a parallel interface, while the AD7895AR-10 is a 12-bit, 100 kSPS ADC with a serial (SPI/QSPI-compatible) interface. The AD7892BRZ-1 offers higher throughput and parallel data output, whereas the AD7895AR-10 provides a slower serial interface in a smaller package.
Do the AD7892BRZ-1 and AD7895AR-10 have the same resolution and input range?
Both are 12-bit ADCs. The AD7892BRZ-1 offers a ±10 V input range (with the -1 grade) and also supports a ±2.5 V option depending on grade, while the AD7895AR-10 is specified with a 0 V to 2.5 V unipolar input range. Input ranges are not identical and must be matched to the signal chain.
Are the AD7892BRZ-1 and AD7895AR-10 pin-compatible or package-compatible?
No. The AD7892BRZ-1 is supplied in a 24-lead SOIC (RW package), while the AD7895AR-10 is supplied in an 8-lead SOIC (R package). The pin counts, pin functions, and PCB land patterns differ, so they are not drop-in replacements.
Can the AD7895AR-10 be used as a direct substitute for the AD7892BRZ-1?
No. Beyond package and pin differences, the interfaces differ (serial versus parallel), the maximum throughput differs (100 kSPS versus 500 kSPS), and the input ranges differ. A direct substitution is not possible without redesigning the interface, layout, and analog front end.
What are the maximum sampling rates of the AD7892BRZ-1 and AD7895AR-10?
The AD7892BRZ-1 is specified for a maximum throughput of 500 kSPS. The AD7895AR-10 is specified for a maximum throughput of 100 kSPS. The AD7892BRZ-1 is therefore suited to higher-speed acquisition, while the AD7895AR-10 targets lower-speed, lower-power applications.
What interface types do the AD7892BRZ-1 and AD7895AR-10 provide?
The AD7892BRZ-1 provides a parallel microprocessor-compatible interface for direct connection to a data bus. The AD7895AR-10 provides a serial interface compatible with SPI, QSPI, and MICROWIRE, requiring fewer I/O lines but at lower throughput.
Do the AD7892BRZ-1 and AD7895AR-10 operate from the same supply voltage?
Both devices operate from a single +5 V supply. However, the AD7892BRZ-1 also requires a separate reference and provides a reference output, while the AD7895AR-10 includes an on-chip reference. Supply decoupling and reference configuration should be verified against each datasheet.
Which part is better suited for low-power, space-constrained designs?
The AD7895AR-10 is generally better suited to space-constrained designs because it is offered in an 8-lead SOIC package and uses a serial interface that reduces pin count and board routing. The AD7892BRZ-1, in a 24-lead SOIC with a parallel interface, is better suited to higher-throughput systems where bus interfacing is preferred.