Part A
ADC0832CCN
Техасские инструменты
- Lifecycle
- Active
- Stock
- 5986 ПКС
- Package
- PDIP-8
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Not a drop-in replacement
ADC0832CCN and ADC0802LCN are not functionally interchangeable: the ADC0832CCN is a 2-channel 8-bit serial (SPI-like) ADC in an 8-pin DIP, while the ADC0802LCN is a 1-channel 8-bit successive-approximation ADC with a parallel microprocessor interface in a 20-pin DIP. The differing channel count, output interface, package footprint, and conversion architecture require board redesign and firmware changes, so substitution is not recommended without full revalidation.
Different output interface
Different channel count
Different package footprint
Different conversion architecture
Parts at a glance
Part B
ADC0802LCN
корпорации Harris
- Lifecycle
- Active
- Stock
- 5096 ПКС
- Series
- Сбор данных - аналогово-цифровые преобразователи (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 | ADC0832CCN | ADC0802LCN | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both provide 8-bit resolution, so quantization step size is comparable for a given reference voltage. |
| Architecture | Successive approximation (SAR) | Successive approximation (SAR) | Same SAR architecture means similar conversion timing behavior and control interface style. |
| Number of input channels | 2 single-ended / 1 differential | 1 single-ended | The ADC0832 offers multiplexed dual-channel capability, while the ADC0802 is single-channel, affecting system channel count. |
| Interface type | Serial (Microwire/SPI-compatible) | Parallel (microprocessor bus) | Serial vs parallel interface fundamentally changes pin count, wiring, and host controller requirements. |
| Supply voltage | 5 V | 5 V | Both operate from a 5 V supply, simplifying power rail compatibility in legacy designs. |
| Package | 8-pin PDIP | 20-pin PDIP | Different package pin counts affect PCB footprint and are not drop-in compatible. |
| Conversion time | 32 µs (typical) | 100 µs (typical) | Faster conversion in the ADC0832 allows higher sample rates for time-sensitive measurements. |
| Reference input | External VREF (with VCC) | External VREF/2 | Reference scaling differs, affecting full-scale input range and analog front-end design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC0832CCN | ADC0802LCN |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Obsolete | Active |
| Number of Bits | 8 | - |
| Sampling Rate(Per Second) | 31.25k | - |
| Number of Inputs | 2 | - |
| Input Type | Differential, Pseudo-Differential, Single Ended | - |
| Data Interface | SPI | - |
| Configuration | MUX-ADC | - |
| Number of A/D Converters | 1 | - |
| Architecture | SAR | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 4.5V ~ 6.3V | - |
| Voltage - Supply, Digital | 4.5V ~ 6.3V | - |
| Operating Temperature | -40°C ~ 85°C | - |
Frequently asked questions
What are the key architectural differences between the ADC0832CCN and ADC0802LCN?
The ADC0832CCN is an 8-bit successive-approximation ADC with a 2-channel multiplexer and serial (Microwire/SPI-compatible) output, housed in an 8-pin DIP. The ADC0802LCN is an 8-bit successive-approximation ADC with a single analog input and parallel 8-bit output, housed in a 20-pin DIP. The ADC0832CCN integrates a 2-channel MUX, while the ADC0802LCN requires external multiplexing for multiple channels.
Are the ADC0832CCN and ADC0802LCN pin-compatible?
No. The ADC0832CCN is an 8-pin device (DIP-8), while the ADC0802LCN is a 20-pin device (DIP-20). They have different pin counts, pin functions, and PCB land patterns, so they are not pin-compatible and cannot be directly substituted without a board redesign.
How do the digital interfaces of the ADC0832CCN and ADC0802LCN differ?
The ADC0832CCN provides a serial output interface (compatible with Microwire/SPI) using CS, CLK, DI, and DO pins, reducing pin count and simplifying isolation. The ADC0802LCN provides a parallel 8-bit output bus (D0–D7) with control signals such as CS, RD, and WR, requiring more I/O lines from the host controller.
What are the analog input configurations of each device?
The ADC0832CCN features a 2-channel analog multiplexer that can be configured for single-ended inputs on either channel or differential input between the two channels. The ADC0802LCN has a single analog input channel (with differential reference/input arrangement per its datasheet) and does not include an on-chip input multiplexer.
Do the ADC0832CCN and ADC0802LCN have the same resolution and conversion type?
Yes. Both are 8-bit successive-approximation ADCs. However, their conversion timing, clock requirements, and control logic differ per their respective manufacturer datasheets, so timing parameters must be verified individually for each part.
Can the ADC0832CCN directly replace the ADC0802LCN in an existing design?
No. Due to differences in package size (8-pin vs 20-pin), interface type (serial vs parallel), and analog input configuration (2-channel MUX vs single input), a direct drop-in replacement is not possible. Any substitution requires board redesign and firmware changes validated against the manufacturer datasheets.
Which device is better suited for space-constrained or isolated designs?
The ADC0832CCN is generally better suited for space-constrained designs because its 8-pin package and serial interface reduce PCB area and host I/O requirements. The ADC0802LCN's 20-pin package and parallel bus require more board space and I/O lines, which may be less desirable in compact or isolated systems.