Part A
AD7812YRUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3695 個数
- Package
- TSSOP-20
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Not a drop-in replacement
The AD7812YRUZ and AD7810YRM are not drop-in replacements for one another. The AD7812YRUZ is an 8-channel, 10-bit serial ADC in a TSSOP-20 package, while the AD7810YRM is a single-channel, 10-bit serial ADC in an MSOP-8 package. Their channel count, package footprint, and pinout differ fundamentally, so a direct board-level substitution is not possible without redesign.
Different channel count
Different package footprint
Different pinout
Different input configuration
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7812YRUZ | AD7810YRM | Why it matters |
|---|---|---|---|
| Number of ADC Channels | 8 (single-ended) | 1 (single-ended) | Determines how many analog signals can be digitized; an 8-channel part cannot be directly substituted where a single-channel part is used without redesigning the input multiplexing. |
| Resolution | 10 bits | 10 bits | Both provide 10-bit resolution, so quantization accuracy is equivalent and neither offers a resolution advantage for substitutability. |
| Sampling Rate | 350 kSPS | 350 kSPS | Conversion throughput is identical, so timing and signal bandwidth requirements are met equally by either device. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply ranges allow either part to operate in the same system power rail without level shifting or regulator changes. |
| Interface Type | Serial (SPI/QSPI/MICROWIRE compatible) | Serial (SPI/QSPI/MICROWIRE compatible) | Identical serial interface protocols simplify firmware and hardware compatibility when swapping parts. |
| Package / Case | 16-TSSOP | 8-MSOP | Different package footprints and pin counts require PCB layout changes; the parts are not drop-in replacements. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Equivalent temperature ratings ensure both parts suit the same industrial-grade environmental conditions. |
| Power Consumption | Typically ~10 mW at 3 V | Typically ~10 mW at 3 V | Comparable power draw means thermal and battery-life budgets remain similar when substituting one for the other. |
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 | AD7812YRUZ | AD7810YRM |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | 10 |
| Sampling Rate(Per Second) | 350k | 350k |
| Number of A/D Converters | 1 | 1 |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
| Number of Inputs | 7, 8 | - |
| Input Type | Pseudo-Differential, Single Ended | - |
| Data Interface | DSP | - |
| Configuration | MUX-S/H-ADC | - |
| Ratio - S / H: ADC | 1:1 | - |
| Architecture | SAR | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | - |
Frequently asked questions
What are the key differences between the AD7812YRUZ and AD7810YRM?
The AD7812YRUZ is a 10-bit, 8-channel successive-approximation ADC with a serial interface, housed in a 20-lead TSSOP package. The AD7810YRM is a 10-bit, 2-channel (single-ended) or 1-channel (differential) ADC with a serial interface, housed in an 8-lead MSOP package. The AD7812 offers more input channels and a larger package, while the AD7810 provides a smaller footprint with fewer channels.
Are the AD7812YRUZ and AD7810YRM pin-compatible?
No. The AD7812YRUZ uses a 20-lead TSSOP package, while the AD7810YRM uses an 8-lead MSOP package. The pin counts, pin functions, and package dimensions differ, so they are not pin-compatible and cannot be interchanged on the same PCB land pattern without redesign.
Do both parts have the same resolution and sampling architecture?
Yes. Both the AD7812YRUZ and AD7810YRM are 10-bit successive-approximation ADCs. Both provide a serial digital interface. The primary architectural difference is the number of analog input channels and the package size, not the core resolution or conversion architecture.
How do the analog input configurations differ between the two devices?
The AD7812YRUZ provides 8 analog input channels, configurable as single-ended inputs. The AD7810YRM provides 2 single-ended input channels or 1 differential input channel. Designs requiring multiple single-ended sensors should account for the AD7810's lower channel count or use the AD7812YRUZ.
Can the AD7810YRM be used as a drop-in replacement for the AD7812YRUZ?
No. The AD7810YRM is not a drop-in replacement for the AD7812YRUZ. The package (8-lead MSOP vs 20-lead TSSOP), pinout, and channel count differ. A direct substitution would require PCB redesign and verification of the reduced channel count against the system requirements.
Which part is better suited for space-constrained designs?
The AD7810YRM is better suited for space-constrained designs because it is offered in an 8-lead MSOP package, which is significantly smaller than the 20-lead TSSOP package of the AD7812YRUZ. However, the smaller package comes with fewer analog input channels (2 single-ended or 1 differential vs 8 single-ended).
Do both devices operate from the same supply voltage range?
Both the AD7812YRUZ and AD7810YRM are specified for operation from a single 2.7 V to 5.5 V supply, according to their respective manufacturer datasheets. Designers should still verify the exact supply and reference requirements against the latest datasheet revision for each part before finalizing a design.
What interface do the AD7812YRUZ and AD7810YRM use?
Both devices use a serial digital interface for communication with a host controller. The AD7812YRUZ and AD7810YRM provide serial data output and clock signals suitable for SPI/QSPI/MICROWIRE-compatible interfaces. The exact timing and control word formats differ and must be checked in the respective datasheets.