Part A
ADC0848CCVX
Texas Instruments
- Lifecycle
- Active
- Stock
- 2942 PCS
- Package
- LCC-28
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADC0848CCVX and ADC0838CCV are both 8-bit successive-approximation ADCs from the same family, sharing an identical 20-pin package footprint and comparable conversion architecture, making them strong functional replacement candidates. However, the ADC0848CCVX provides 8 input channels versus 4 on the ADC0838CCV, and the two devices differ in their serial interface configuration, so the replacement is viable only after confirming channel count requirements and interface compatibility in the target design.
Resolution
High match
Package Type
High match
Input Channel Count
Validation required
Interface Type
Validation required
Parts at a glance
Part B
ADC0838CCV
Texas Instruments
- Lifecycle
- Active
- Stock
- 2804 PCS
- Package
- LCC-20
- 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 | ADC0848CCVX | ADC0838CCV | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit converters, so quantization accuracy is equivalent. |
| Number of Input Channels | 8 channels (single-ended) / 4 channels (differential) | 8 channels (single-ended) / 4 channels (differential) | Channel count determines how many analog signals can be multiplexed into one converter. |
| Input Configuration / Multiplexer Type | Single-ended or differential, software configurable | Single-ended or differential, software configurable | Flexible input modes allow the same part to serve both single-ended and differential sensing needs. |
| Interface Type | Parallel (microprocessor bus interface) | Serial (Microwire/SPI-compatible) | The bus interface must match the host microcontroller; parallel vs serial is a fundamental system-level difference. |
| Conversion Time | Approximately 30 µs | Approximately 32 µs | Conversion time affects maximum sampling rate and throughput in the application. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Both operate from a standard 5 V rail, simplifying power supply design. |
| Package | 28-pin PLCC | 20-pin SOIC / DIP | Package footprint and pin count affect PCB layout and cannot be directly substituted without redesign. |
| Operating Temperature Range | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | Both are commercial-grade parts, suitable for the same benign operating environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC0848CCVX | ADC0838CCV |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 8 | 8 |
| Number of Inputs | 4, 8 | 4, 8 |
| Input Type | Differential, Pseudo-Differential, Single Ended | Differential, Pseudo-Differential, Single Ended |
| Data Interface | Parallel | SPI |
| Configuration | MUX-ADC | MUX-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 4.5V ~ 6V | 4.5V ~ 6.3V |
| Voltage - Supply, Digital | 4.5V ~ 6V | 4.5V ~ 6.3V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Sampling Rate(Per Second) | 25k | - |
Frequently asked questions
What are the key differences between the ADC0848CCVX and the ADC0838CCV?
The ADC0848CCVX is an 8-channel, 8-bit successive-approximation A/D converter with a multiplexer, offering single-ended or differential input configurations and a 5V supply. The ADC0838CCV is an 8-channel, 8-bit serial I/O A/D converter with a similar multiplexer but uses a different serial interface protocol and package. The ADC0848CCVX typically comes in a 28-pin PLCC package, while the ADC0838CCV is in a 20-pin DIP or SOIC package. Both are from Texas Instruments (originally National Semiconductor) and operate on a 5V supply.
Are the ADC0848CCVX and ADC0838CCV pin-compatible?
No, they are not pin-compatible. The ADC0848CCVX is housed in a 28-pin PLCC package, whereas the ADC0838CCV is available in a 20-pin DIP or SOIC package. The pin counts and pin functions differ, so they cannot be directly substituted without a PCB redesign.
Do both devices support the same number of analog input channels?
Yes, both the ADC0848CCVX and the ADC0838CCV provide 8 analog input channels via an on-chip multiplexer. They can be configured for single-ended or differential inputs, allowing flexibility in signal acquisition.
What is the resolution and conversion architecture of these ADCs?
Both the ADC0848CCVX and the ADC0838CCV are 8-bit successive-approximation register (SAR) analog-to-digital converters. They provide 8-bit resolution and are suitable for general-purpose signal conversion in embedded systems.
What are the supply voltage and power consumption specifications?
Both devices operate from a single 5V supply. The ADC0848CCVX typically consumes about 15 mW, while the ADC0838CCV consumes approximately 10 mW. These values are based on manufacturer datasheets and may vary with operating conditions.
How do the digital interfaces of the ADC0848CCVX and ADC0838CCV differ?
The ADC0848CCVX uses a parallel microprocessor-compatible interface, allowing direct connection to a data bus. The ADC0838CCV uses a serial interface (MICROWIRE/SPI-compatible) for communication, which reduces pin count and simplifies isolation but requires a serial port on the host controller.
Can the ADC0838CCV be used as a drop-in replacement for the ADC0848CCVX?
No, a drop-in replacement is not possible due to differences in package, pinout, and interface type. The ADC0848CCVX uses a parallel interface and a 28-pin PLCC package, while the ADC0838CCV uses a serial interface and a 20-pin package. A redesign of the PCB and firmware would be required.
What are the typical applications for these ADCs?
Both the ADC0848CCVX and ADC0838CCV are used in applications requiring multi-channel analog-to-digital conversion, such as industrial process control, data acquisition systems, instrumentation, and embedded monitoring. The parallel interface of the ADC0848CCVX suits systems with a available data bus, while the serial interface of the ADC0838CCV is advantageous for space-constrained or isolated designs.