Part A
ADC128S102CIMTX
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 6850 PCS
- Package
- TSSOP-16
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Not a drop-in replacement
The ADC128S102CIMTX and ADC12041CIMSAX are not drop-in replacements for one another. They differ in resolution, channel count, digital interface, and package footprint, so substituting one for the other requires a full board and firmware redesign rather than a direct swap.
Different resolution
Different channel count
Different digital interface
Different package footprint
Parts at a glance
Part B
ADC12041CIMSAX
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 3471 PCS
- Package
- SSOP-28
- 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 | ADC128S102CIMTX | ADC12041CIMSAX | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both are 12-bit ADCs, so quantization step size is equivalent for a given reference voltage. |
| Number of Input Channels | 8 single-ended | 1 single-ended (with internal mux/self-calibration) | Channel count determines how many analog signals can be sampled without external multiplexing. |
| Sampling Rate | 500 kSPS to 1 MSPS | Up to 1 MSPS | Maximum throughput limits the highest signal frequency that can be digitized without aliasing. |
| Interface Type | SPI (serial) | Parallel (byte-wide) | The digital interface must match the host controller; SPI and parallel are not pin-compatible. |
| Supply Voltage | 2.7 V to 5.25 V | 5 V (single supply) | Operating supply range affects compatibility with the system power rail and analog input span. |
| Package | TSSOP-16 | SSOP-28 | Different package footprints and pin counts prevent direct board-level substitution. |
| Internal Reference | No (external reference required) | Yes (internal reference) | An internal reference simplifies the design and removes an external reference component. |
| 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 | ADC128S102CIMTX | ADC12041CIMSAX |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 1M | 216k |
| Number of Inputs | 8 | 1 |
| Input Type | Single Ended | Differential |
| Data Interface | SPI, DSP | Parallel |
| Configuration | MUX-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 | External |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 5V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADC128S102CIMTX and the ADC12041CIMSAX?
The ADC128S102CIMTX is an 8-channel, 12-bit successive-approximation ADC with a serial (SPI/QSPI/MICROWIRE) interface, operating from a 2.7 V to 5.25 V supply, offered in a 16-pin TSSOP package. The ADC12041CIMSAX is a 12-bit successive-approximation ADC with a parallel interface, operating from a 5 V supply, offered in a 28-pin SSOP package. They differ in channel count, interface type, supply range, and package footprint.
Do the ADC128S102CIMTX and ADC12041CIMSAX have the same resolution and architecture?
Yes. Both devices are 12-bit successive-approximation register (SAR) analog-to-digital converters, so their resolution and conversion architecture are equivalent; the differences lie in channel count, digital interface, supply requirements, and package.
Can the ADC128S102CIMTX and ADC12041CIMSAX be used as drop-in replacements for each other?
No. The two devices have different pin counts and package types (16-pin TSSOP versus 28-pin SSOP), different digital interfaces (serial versus parallel), and different supply voltage requirements. A direct drop-in replacement is not possible without a PCB redesign and interface rework.
What digital interface does each device use?
The ADC128S102CIMTX uses a serial interface compatible with SPI, QSPI, and MICROWIRE, reducing pin count and board routing. The ADC12041CIMSAX uses a parallel digital interface, which requires more I/O pins but can offer higher throughput in parallel-bus systems.
What are the supply voltage requirements for each part?
The ADC128S102CIMTX operates from a single supply of 2.7 V to 5.25 V, making it suitable for both 3.3 V and 5 V systems. The ADC12041CIMSAX operates from a 5 V supply. Designs migrating between the two must account for this supply difference.
How many analog input channels does each device provide?
The ADC128S102CIMTX provides 8 analog input channels multiplexed into a single SAR converter. The ADC12041CIMSAX provides a single analog input channel. Systems requiring multi-channel acquisition should account for this difference when comparing the two parts.
In which package is each device supplied?
The ADC128S102CIMTX is supplied in a 16-pin TSSOP package. The ADC12041CIMSAX is supplied in a 28-pin SSOP package. The differing pin counts and land patterns require separate PCB footprints.
Which device is better suited for space-constrained or multi-channel designs?
The ADC128S102CIMTX is generally better suited to space-constrained and multi-channel designs because it integrates 8 input channels in a compact 16-pin TSSOP with a low-pin-count serial interface. The ADC12041CIMSAX, with a single channel, parallel interface, and 28-pin SSOP, is oriented toward systems that already use a parallel bus and require only one analog input.