Part A
ADC128S022CIMT
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 4583 個数
- Package
- TSSOP-16
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADC128S022CIMT is a functional replacement candidate for the ADC128S102CIMTX, sharing the same 12-bit SAR architecture, 8-channel single-ended input configuration, and TSSOP-16 footprint. Designers should validate the differing SPI clock rate and supply voltage range against system timing and power budgets before substitution.
Resolution and Channel Count
High match
Package and Pinout
High match
SPI Clock Frequency
Validation required
Supply Voltage Range
Validation required
Parts at a glance
Part B
ADC128S102CIMTX
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 6850 個数
- Package
- TSSOP-16
- Series
- データ取得 - アナログ/デジタルコンバータ (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 | ADC128S022CIMT | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide the same 12-bit resolution, so quantization step size and achievable accuracy are equivalent. |
| Number of Input Channels | 8 single-ended | 8 single-ended | Identical channel count means the same number of analog signals can be multiplexed into the converter. |
| Supply Voltage Range | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Matching supply ranges allow the parts to operate from the same system rails without level shifting. |
| Interface Type | SPI (serial) | SPI (serial) | Both use a standard SPI-compatible serial interface, so the same host controller firmware and bus wiring can be reused. |
| Package | TSSOP-16 | TSSOP-16 | Same package and pinout enable drop-in board replacement without layout changes. |
| Maximum Throughput Rate | 1 MSPS | 200 kSPS | The higher sampling rate of the ADC128S102CIMTX supports faster signal acquisition; substituting the slower part may limit bandwidth in high-speed applications. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Both cover the same industrial temperature range, so environmental tolerance is equivalent for either part. |
| Power Consumption (Typical) | Approx. 1.6 mW at 3 V, 1 MSPS | Approx. 0.5 mW at 3 V, 200 kSPS | Lower throughput of the ADC128S022CIMT yields lower typical power draw; power-sensitive designs may favor the slower part. |
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 | ADC128S022CIMT | ADC128S102CIMTX |
|---|---|---|
| Part Status | Obsolete | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 200k | 1M |
| Number of Inputs | 8 | 8 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | MUX-S/H-ADC | MUX-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 | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the ADC128S102CIMTX and the ADC128S022CIMT?
The ADC128S102CIMTX is an 8-channel, 12-bit successive-approximation ADC with a maximum throughput of 1 MSPS, while the ADC128S022CIMT is an 8-channel, 12-bit ADC with a maximum throughput of 200 kSPS. Both are offered in a TSSOP-16 package and operate from a 2.7 V to 5.25 V supply, but the ADC128S102 provides a significantly higher sampling rate.
Are the ADC128S102CIMTX and ADC128S022CIMT pin-compatible?
Yes. Both devices are specified in the same 16-pin TSSOP package with the same pinout, including the serial interface (CS, SCLK, DIN, DOUT), analog inputs (IN0–IN7), and supply/ground pins. This allows the ADC128S022CIMT to be used as a lower-speed drop-in alternative to the ADC128S102CIMTX, provided the system timing requirements are met.
What is the maximum sampling rate of each device?
The ADC128S102CIMTX supports a maximum throughput of 1 MSPS. The ADC128S022CIMT supports a maximum throughput of 200 kSPS. Designs requiring sample rates above 200 kSPS must use the ADC128S102CIMTX.
Do both ADCs use the same serial interface protocol?
Yes. Both devices use a standard SPI-compatible serial interface with separate chip-select (CS), serial clock (SCLK), data-in (DIN), and data-out (DOUT) pins. The command word format for channel selection is the same, so firmware written for one device is generally portable to the other, subject to the respective SCLK frequency limits.
What are the power supply and reference voltage requirements for these ADCs?
Both the ADC128S102CIMTX and ADC128S022CIMT operate from a single analog supply (VA) of 2.7 V to 5.25 V and a digital supply (VD) of 2.7 V to 5.25 V. The reference voltage (VREF) is applied externally and must be between 1.0 V and VA. The analog input range is 0 V to VREF for both devices.
What is the power consumption of each device?
The ADC128S102CIMTX typically consumes about 2.5 mW at 3 V with a 1 MSPS throughput. The ADC128S022CIMT typically consumes about 1.2 mW at 3 V with a 200 kSPS throughput. Actual power scales with supply voltage and sampling rate, and both devices offer a shutdown mode to reduce consumption when not converting.
Can the ADC128S022CIMT replace the ADC128S102CIMTX in an existing design?
In many cases yes, because the devices share the same package, pinout, interface protocol, and input range. However, the replacement is only valid if the system's required sample rate does not exceed 200 kSPS and the timing budget accommodates the lower maximum SCLK frequency of the ADC128S022CIMT. The design should be validated against the respective datasheets before substitution.
What are the operating temperature ranges for these devices?
Both the ADC128S102CIMTX and ADC128S022CIMT are specified for the industrial temperature range of −40 °C to +85 °C, making them suitable for industrial control, instrumentation, and embedded sensing applications.