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 ADC0809CCVX are both 8-bit successive-approximation A/D converters in a 28-pin PLCC package with a similar parallel microprocessor interface, making them a viable functional replacement candidate. However, the ADC0848CCVX provides a flexible 4-channel differential or 8-channel single-ended multiplexer with an on-chip track-and-hold, whereas the ADC0809CCVX offers an 8-channel single-ended multiplexer with an address latch and 8-bit A/D conversion. Designers must validate channel configuration, input range, and conversion timing against the target application before substituting one for the other.
Resolution and Architecture
High match
Package Type
High match
Input Multiplexer Configuration
Validation required
Interface and Control Logic
Validation required
Parts at a glance
Part B
ADC0809CCVX
Texas Instruments
- Lifecycle
- Active
- Stock
- 4076 PCS
- Package
- LCC-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 | ADC0848CCVX | ADC0809CCVX | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit converters, so quantization step size is equivalent; resolution alone does not differentiate them. |
| Number of Analog Input Channels | 8 (single-ended) or 4 (differential) | 8 (single-ended) | The ADC0848 supports differential inputs, enabling rejection of common-mode noise, while the ADC0809 is single-ended only. |
| Input Configuration / Multiplexer Type | Configurable single-ended or differential MUX | Single-ended 8-channel MUX | Differential capability affects signal conditioning requirements and noise immunity in the application circuit. |
| Conversion Architecture | Successive approximation register (SAR) | Successive approximation register (SAR) | Both use SAR conversion, giving similar speed/accuracy tradeoffs; architecture is not a differentiator here. |
| Interface Type | Parallel (microprocessor bus compatible) | Parallel (microprocessor bus compatible) | Both present a parallel interface, so bus timing and host connection requirements are broadly similar. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Identical supply requirements mean power rail design is interchangeable between the two parts. |
| Package | 28-pin PLCC (CCV suffix) | 28-pin PLCC (CCV suffix) | Same package and pin count allow board-level footprint compatibility, though pin functions must be verified. |
| Operating Temperature Range | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | Identical commercial temperature ratings mean environmental suitability is the same for both devices. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC0848CCVX | ADC0809CCVX |
|---|---|---|
| Supplier | - | Texas Instruments,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 25k | 10k |
| Number of Inputs | 4, 8 | 8 |
| Input Type | Differential, Pseudo-Differential, Single Ended | Single Ended |
| Data Interface | Parallel | Parallel |
| Configuration | MUX-ADC | MUX-S/H-ADC |
| Ratio - S / H: ADC | - | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 4.5V ~ 6V | 4.5V ~ 6.5V |
| Voltage - Supply, Digital | 4.5V ~ 6V | 4.5V ~ 6.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key architectural differences between the ADC0848CCVX and ADC0809CCVX?
The ADC0848CCVX is an 8-channel, 8-bit successive-approximation A/D converter with a multiplexer that can be configured for single-ended or differential inputs, and it includes a track/hold function. The ADC0809CCVX is an 8-channel, 8-bit successive-approximation A/D converter with an 8-channel multiplexer featuring single-ended inputs only and no track/hold amplifier. Both are manufactured by Texas Instruments (originally National Semiconductor) and are available in 28-pin PLCC packages.
Are the ADC0848CCVX and ADC0809CCVX pin-compatible?
No, they are not pin-compatible. Although both are offered in a 28-pin PLCC (the CCVX suffix denotes the PLCC package for both devices), the pin functions differ. The ADC0848CCVX provides differential input capability and track/hold control pins, while the ADC0809CCVX has a different pin assignment for its multiplexer addressing and control signals. A direct drop-in replacement is not possible without verifying pin functions against the respective datasheets.
Do both devices support differential input configurations?
No. The ADC0848CCVX supports both single-ended and differential input configurations, selectable via the multiplexer programming. The ADC0809CCVX supports only single-ended inputs through its 8-channel multiplexer. Designs requiring differential measurement should use the ADC0848CCVX.
What is the resolution and conversion architecture of each device?
Both the ADC0848CCVX and ADC0809CCVX are 8-bit successive-approximation register (SAR) A/D converters. Each provides 8 bits of resolution. Neither device offers higher resolution options within these part numbers.
Does either device include a track/hold amplifier?
The ADC0848CCVX includes an on-chip track/hold function, which allows it to accurately convert time-varying analog signals. The ADC0809CCVX does not include a track/hold amplifier; it relies on the external signal remaining stable during conversion or requires an external sample-and-hold circuit for dynamic signals.
What are the package and operating temperature specifications for these parts?
Both the ADC0848CCVX and ADC0809CCVX are supplied in a 28-pin PLCC package (indicated by the CCVX suffix). Both are specified for commercial temperature operation, typically 0°C to +70°C, per their respective Texas Instruments datasheets. Designers should confirm the exact temperature grade against the specific datasheet revision before use in extended-temperature applications.
Can the ADC0809CCVX be substituted with the ADC0848CCVX in an existing design?
Not as a direct drop-in replacement. While both are 8-bit, 8-channel SAR ADCs in 28-pin PLCC packages, differences in pin functions, input configuration (differential vs. single-ended), and the presence of a track/hold amplifier on the ADC0848CCVX mean the substitution requires schematic and layout review, plus validation against the target design's timing and control requirements.