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 AD7893AR-10 are not drop-in replacements for one another. Although both are Analog Devices 12-bit successive-approximation ADCs, they differ in resolution architecture, input configuration, package footprint, and throughput, so substituting one for the other requires board-level redesign and validation rather than direct replacement.
Different input configuration
Different package footprint
Different throughput rating
Different interface timing
Parts at a glance
Part B
AD7893AR-10
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6445 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 | AD7893AR-10 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both are 12-bit ADCs, so resolution is equivalent and not a differentiator for substitutability. |
| Number of ADC Inputs / Channels | 2 (single-ended, with fast channel switching) | 1 (single-ended) | The AD7892 offers two input channels while the AD7893 has only one, affecting multi-signal acquisition designs. |
| Sampling Rate | 500 kSPS | 117 kSPS | The AD7892 samples significantly faster, which matters for higher-bandwidth or multiplexed signal capture. |
| Input Voltage Range | ±10 V (bipolar) | 0 V to +2.5 V (unipolar) | Different input spans require different signal conditioning; bipolar ±10 V suits industrial signals while unipolar 0–2.5 V suits low-voltage sensors. |
| Interface Type | Parallel (12-bit word) | Serial (SPI/QSPI compatible) | Parallel vs serial interface changes the host MCU/FPGA pin count and firmware, a key factor for drop-in substitution. |
| Supply Voltage | +5 V single supply | +5 V single supply | Both operate from a single +5 V rail, so power supply design is compatible between the two parts. |
| Package | 24-lead SOIC (SOIC_W) | 8-lead SOIC (SOIC_N) | Different package footprints and pin counts prevent direct board-level replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings mean both suit the same environmental conditions. |
| Power Consumption | Approx. 60 mW (typical) | Approx. 25 mW (typical) | The AD7893 draws less power, which matters for power-sensitive or portable designs. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7892BRZ-1 | AD7893AR-10 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 500k | 117k |
| Number of Inputs | 2 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI, Parallel | SPI |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External, Internal | External |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the primary differences between the AD7892BRZ-1 and the AD7893AR-10?
The AD7892BRZ-1 is a 12-bit, 500 kSPS successive-approximation ADC with a parallel interface, while the AD7893AR-10 is a 12-bit, 117 kSPS ADC with a serial (SPI/QSPI-compatible) interface. The AD7892BRZ-1 offers a faster throughput and parallel data output, whereas the AD7893AR-10 provides a slower serial interface in a smaller package.
Are the AD7892BRZ-1 and AD7893AR-10 pin-compatible?
No. The AD7892BRZ-1 is supplied in a 24-lead SOIC (RW-24) package, while the AD7893AR-10 is supplied in an 8-lead SOIC (R-8) package. The pin counts, pin functions, and footprints differ, so they are not drop-in replacements.
What are the input voltage ranges of these two ADCs?
The AD7892BRZ-1 offers a selectable input range of ±10 V or ±5 V (bipolar) depending on the model suffix, with the -1 grade configured for ±10 V. The AD7893AR-10 has a fixed input range of 0 V to +10 V (unipolar). The input configurations are therefore not equivalent.
How do the sampling rates compare between the AD7892BRZ-1 and AD7893AR-10?
The AD7892BRZ-1 provides a maximum throughput of 500 kSPS, while the AD7893AR-10 provides a maximum throughput of 117 kSPS. The AD7892BRZ-1 is therefore suitable for higher-speed acquisition applications.
What digital interfaces do the AD7892BRZ-1 and AD7893AR-10 use?
The AD7892BRZ-1 uses a parallel microprocessor-compatible interface for direct connection to a data bus. The AD7893AR-10 uses a serial interface compatible with SPI, QSPI, and MICROWIRE protocols. System architecture must account for this difference in host connectivity.
Do the AD7892BRZ-1 and AD7893AR-10 operate from the same supply voltage?
Both devices operate from a single +5 V analog supply. The AD7892BRZ-1 additionally requires a +5 V digital supply (VDD) for its parallel interface, while the AD7893AR-10 operates with a single +5 V supply for both analog and digital functions.
Can the AD7893AR-10 directly replace the AD7892BRZ-1 in an existing design?
No. The differences in package footprint, pin count, interface type (serial versus parallel), input voltage range, and throughput mean a direct replacement is not possible without redesigning the PCB, host interface, and signal conditioning. Each difference must be validated against the respective manufacturer datasheets before substitution.
What are the operating temperature ranges for the AD7892BRZ-1 and AD7893AR-10?
Both the AD7892BRZ-1 (B grade) and the AD7893AR-10 (A grade) are specified for the industrial temperature range of −40°C to +85°C, per Analog Devices datasheet specifications.