Part A
ADC0808CCVX
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 7536 個数
- Package
- LCC-28
- 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 ADC0848CCVX and ADC0808CCVX are both 8-bit successive-approximation A/D converters in a 28-pin PLCC package with an 8-channel multiplexer and similar supply and reference requirements, making them strong functional replacement candidates. The primary distinction is the digital interface: the ADC0848CCVX provides a microprocessor-compatible parallel bus interface, while the ADC0808CCVX requires an external clock and offers a more general-purpose analog input structure. Designers should validate clocking, interface timing, and channel configuration against the target system before substitution.
Resolution and Architecture
High match
Package Type
High match
Digital Interface
Validation required
Clock Requirement
Validation required
Parts at a glance
Part B
ADC0848CCVX
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 2942 個数
- Package
- LCC-28
- 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 | ADC0848CCVX | ADC0808CCVX | Why it matters |
|---|---|---|---|
| Resolution | 8 bit | 8 bit | 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) / 4 (differential) | 8 (single-ended) | The ADC0848 supports differential input pairs, enabling common-mode rejection and bipolar signal measurement that the ADC0808 cannot provide. |
| Input Configuration / Multiplexer Type | 8-channel multiplexer with differential capability | 8-channel single-ended multiplexer | Differential capability affects how sensor signals are wired and whether noise rejection is possible, impacting functional substitutability. |
| Conversion Architecture | Successive approximation | Successive approximation | Same SAR architecture means similar conversion timing behavior and control interface philosophy. |
| Interface Type | Parallel (microprocessor-compatible) | Parallel (microprocessor-compatible) | Both present parallel data buses, so host-side bus timing and control signals are broadly compatible. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Identical supply requirements simplify power-rail design when substituting one for the other. |
| Package | 28-pin PLCC (VX suffix) | 28-pin PLCC (VX suffix) | Same package and pin count allow drop-in board-level replacement without layout changes. |
| Operating Temperature Range | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | Matching temperature grades mean equivalent environmental suitability for commercial applications. |
| Conversion Time | ~100 µs (typical, at 640 kHz clock) | ~100 µs (typical, at 640 kHz clock) | Comparable throughput ensures sampling rate requirements are met equally by either device. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC0808CCVX | ADC0848CCVX |
|---|---|---|
| Supplier | Texas Instruments,Rochester Electronics, LLC | - |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 10k | 25k |
| Number of Inputs | 8 | 4, 8 |
| Input Type | Single Ended | Differential, Pseudo-Differential, Single Ended |
| Data Interface | Parallel | Parallel |
| Configuration | MUX-S/H-ADC | MUX-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 ~ 6.5V | 4.5V ~ 6V |
| Voltage - Supply, Digital | 4.5V ~ 6.5V | 4.5V ~ 6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADC0848CCVX and ADC0808CCVX?
The ADC0848CCVX is an 8-bit successive-approximation ADC with an 8-channel multiplexer and 8-bit resolution, offering a 4.5 µs conversion time and operating from a single 5 V supply. The ADC0808CCVX is an 8-bit successive-approximation ADC with an 8-channel multiplexer, 8-bit resolution, and a conversion time of approximately 100 µs, also operating from a 5 V supply. The primary differences are conversion speed and the input voltage range configuration.
Are the ADC0848CCVX and ADC0808CCVX pin-compatible?
No. The ADC0848CCVX is supplied in a 28-pin PLCC package, while the ADC0808CCVX is supplied in a 28-pin DIP package. The package types and pinouts differ, so they are not directly pin-compatible and cannot be interchanged without PCB redesign.
What is the resolution of both the ADC0848CCVX and ADC0808CCVX?
Both devices provide 8-bit resolution, yielding 256 discrete output codes over their respective input voltage ranges.
What supply voltage do the ADC0848CCVX and ADC0808CCVX require?
Both the ADC0848CCVX and ADC0808CCVX operate from a single 5 V supply (VCC = 5 V).
How many analog input channels do the ADC0848CCVX and ADC0808CCVX support?
Both devices feature an 8-channel multiplexer, supporting up to 8 single-ended analog input channels. The channel is selected via a 3-bit address input.
What is the conversion time of the ADC0848CCVX compared to the ADC0808CCVX?
The ADC0848CCVX has a conversion time of 4.5 µs (typical), while the ADC0808CCVX has a conversion time of approximately 100 µs. The ADC0848CCVX is therefore significantly faster for successive-approximation conversion.
Can the ADC0848CCVX and ADC0808CCVX be used in the same application?
They can serve similar 8-bit, 8-channel ADC functions, but they are not drop-in replacements due to differing package types (PLCC vs DIP), pinouts, and conversion speeds. Circuit designers must verify package footprint, pin assignments, and timing requirements against the respective manufacturer datasheets before substitution.