Part A
ADS7887SDCKR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 2563 PCS
- Package
- SOT-SC70-6
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7887SDCKR and ADS7887MDBVT share the same core 10-bit SAR ADC architecture, resolution, and serial interface, making them functionally interchangeable in most designs. The primary distinction lies in their package and qualification grade, so the ADS7887MDBVT can serve as a functional replacement for the ADS7887SDCKR where the extended temperature range and alternate package footprint are acceptable.
Resolution and ADC Architecture
High match
Output Interface Type
High match
Package Type
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADS7887MDBVT
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 9951 PCS
- Package
- SOT-23-6
- Series
- Data Acquisition - 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 | ADS7887SDCKR | ADS7887MDBVT | Why it matters |
|---|---|---|---|
| Resolution | 10 bit | 10 bit | Determines the number of discrete output codes and thus the achievable measurement precision; identical resolution means equivalent quantization performance. |
| Sampling Rate | 1.25 MSPS | 1.25 MSPS | Sets the maximum throughput for capturing fast-changing signals; matching rates allow direct substitution in timing-critical acquisition designs. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Defines how many analog signals can be digitized; both being single-channel single-ended means the same signal topology can be reused. |
| Supply Voltage | 2.35 V to 5.25 V | 2.35 V to 5.25 V | Determines compatibility with the system power rail and the input voltage range; identical ranges ensure the same supply design works for both. |
| Interface Type | SPI (serial) | SPI (serial) | Defines how the ADC communicates with the host controller; matching SPI interfaces allow the same firmware and bus wiring to be used. |
| Operating Temperature Range | -40 °C to +125 °C | -55 °C to +125 °C | Specifies the environmental limits for reliable operation; the wider military-grade range of the MDBVT variant matters for harsh or extended-temperature applications. |
| Package / Case | SOT-23-6 (SC-70-6) | SOT-23-6 | Affects PCB footprint and assembly; differing package designations may require layout verification before substitution. |
| Product Grade / Qualification | Industrial grade | Military grade (extended temperature) | Indicates screening and qualification level; the military-grade variant is suited to higher-reliability and wider-temperature applications, which affects cost and sourcing. |
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 | ADS7887SDCKR | ADS7887MDBVT |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | 10 |
| Sampling Rate(Per Second) | 1.25M | 1.25M |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI | 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 | Supply | Supply |
| Voltage - Supply, Analog | 2.35V ~ 5.25V | 2.35V ~ 5.25V |
| Voltage - Supply, Digital | 2.35V ~ 5.25V | 2.35V ~ 5.25V |
| Operating Temperature | -40°C ~ 125°C | -55°C ~ 125°C |
Frequently asked questions
What are the key differences between the ADS7887SDCKR and ADS7887MDBVT?
Both devices are 10-bit, 1.25-MSPS micropower SAR ADCs from Texas Instruments with a 2.35-V to 5.25-V supply range and a pseudo-differential input. The primary differences are package and ordering variant: the ADS7887SDCKR is supplied in a 6-pin SOT-23 (SC-70) tape-and-reel package, while the ADS7887MDBVT is supplied in a 6-pin SOT-23 (DBV) package in small tape-and-reel quantities. Both share the same core electrical specifications per the TI datasheet.
Are the ADS7887SDCKR and ADS7887MDBVT electrically interchangeable?
Yes. Per the Texas Instruments ADS7887 datasheet, both orderable part numbers are the same silicon device with identical electrical characteristics (10-bit resolution, 1.25 MSPS, SPI-compatible serial interface, 2.35-V to 5.25-V supply). The differences are limited to package/ordering designation and reel quantity, so they are electrically interchangeable when the PCB footprint matches the respective package.
What package types do the ADS7887SDCKR and ADS7887MDBVT use?
The ADS7887SDCKR uses the DCK package, a 6-pin SOT-23 (SC-70) body, supplied on tape and reel. The ADS7887MDBVT uses the DBV package, a 6-pin SOT-23 body, supplied on small tape and reel. Designers should confirm the exact package drawing and land pattern from the TI datasheet before layout.
What is the resolution and sampling rate of these ADCs?
Both the ADS7887SDCKR and ADS7887MDBVT are 10-bit successive-approximation register (SAR) ADCs with a maximum throughput of 1.25 MSPS, as specified in the Texas Instruments ADS7887 datasheet.
What supply voltage range do the ADS7887SDCKR and ADS7887MDBVT support?
Both devices operate from a single supply of 2.35 V to 5.25 V, per the TI ADS7887 datasheet. The digital interface is compatible with the same supply rail, and the devices are specified for operation over the industrial temperature range of -40°C to +125°C.
What serial interface do the ADS7887SDCKR and ADS7887MDBVT use?
Both parts provide an SPI-compatible serial interface with a dedicated CS (chip select) and SCLK (serial clock) for reading conversion results. The interface supports daisy-chaining and is compatible with most microcontrollers and DSPs, per the TI ADS7887 datasheet.
Can the ADS7887MDBVT be used as a drop-in replacement for the ADS7887SDCKR?
Only if the PCB land pattern accommodates the DBV package instead of the DCK package. Because both are 6-pin SOT-23 variants with the same pinout and electrical specifications per the TI datasheet, the substitution is feasible after verifying the package footprint and reel quantity requirements for the assembly line.