Part A
ADC128S022CIMTX
德州儀器
- Lifecycle
- Active
- Stock
- 1255 件
- Package
- TSSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The ADC128S022CIMTX and ADC12041CIMSAX are not drop-in replacements for one another. They differ in resolution, channel count, digital interface, and package footprint, so a direct board-level substitution is not possible without redesign.
Different resolution
Different channel count
Different digital interface
Different package footprint
Parts at a glance
Part B
ADC12041CIMSAX
德州儀器
- Lifecycle
- Active
- Stock
- 3471 件
- Package
- SSOP-28
- Series
- 資料獲取-模數轉換器（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 | ADC128S022CIMTX | 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 | Channel count determines how many analog signals can be multiplexed into one converter; the 8-channel part suits multi-sensor systems while the single-channel part suits one-signal designs. |
| Sampling Rate | 200 kSPS | 1 MSPS | Maximum throughput limits the bandwidth of signals that can be digitized; the faster part supports higher-frequency inputs. |
| Interface Type | SPI (serial) | Parallel | The digital interface must match the host controller; SPI uses fewer pins while parallel offers higher data throughput and simpler timing. |
| Supply Voltage | 2.7 V to 5.25 V | 5 V (4.5 V to 5.5 V) | Supply range determines compatibility with the system rail; the wider-range part can run from 3.3 V or 5 V systems, while the 5 V part requires a 5 V rail. |
| Package | TSSOP-16 | SSOP-28 | Footprint and pin count affect PCB layout and drop-in substitutability; the packages are not pin-compatible. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both cover the industrial temperature range, so environmental tolerance is equivalent. |
| Reference Configuration | External reference | Internal reference (with external option) | Reference source affects accuracy and board complexity; an internal reference simplifies design while an external reference allows higher precision. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC128S022CIMTX | ADC12041CIMSAX |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 200k | 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 ADC128S022CIMTX and the ADC12041CIMSAX?
The ADC128S022CIMTX 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 voltage range, and package.
Do the ADC128S022CIMTX and ADC12041CIMSAX have the same resolution and architecture?
Yes. Both devices are 12-bit successive-approximation register (SAR) analog-to-digital converters, so they share the same resolution and conversion architecture, though their input multiplexing, interface, and supply requirements differ.
Can the ADC128S022CIMTX and ADC12041CIMSAX be used interchangeably in the same socket?
No. The ADC128S022CIMTX is supplied in a 16-pin TSSOP package with a serial interface, while the ADC12041CIMSAX is supplied in a 28-pin SSOP package with a parallel interface. The differing pin counts, pin functions, package footprints, and host interface requirements prevent direct socket-level interchangeability.
What interface types do the ADC128S022CIMTX and ADC12041CIMSAX use?
The ADC128S022CIMTX uses a serial interface compatible with SPI, QSPI, and MICROWIRE. The ADC12041CIMSAX uses a parallel microprocessor-compatible interface. This difference affects the number of host pins required and the firmware or driver design.
What are the supply voltage requirements for each device?
The ADC128S022CIMTX operates from a single supply of 2.7 V to 5.25 V. The ADC12041CIMSAX operates from a 5 V supply. Designs must confirm that the system rail matches the respective device's specified operating range.
How many analog input channels does each device provide?
The ADC128S022CIMTX provides 8 analog input channels via an input multiplexer. The ADC12041CIMSAX provides a single analog input channel. The channel count difference is significant for multi-signal acquisition designs.
Are the ADC128S022CIMTX and ADC12041CIMSAX available in the same package type?
No. The ADC128S022CIMTX is offered in a 16-pin TSSOP package, and the ADC12041CIMSAX is offered in a 28-pin SSOP package. PCB land patterns and thermal considerations must be evaluated separately for each package.