Part A
ADC0832CCN
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 5986 PCS
- Package
- PDIP-8
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The ADC0831CCN and ADC0832CCN share the same 8-bit successive-approximation ADC core, PDI package, and supply requirements, making the ADC0831CCN a viable functional substitute for the ADC0832CCN in single-channel applications. The primary distinction is channel count: the ADC0832CCN provides a second multiplexed input channel, so designs requiring dual-channel sampling must retain the ADC0832CCN. For single-channel designs, the ADC0831CCN can be adopted with minimal validation of the serial interface timing.
Resolution
High match
Package Type
High match
Supply Voltage
High match
Channel Count
Not compatible
Parts at a glance
Part B
ADC0831CCN
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 7875 PCS
- Package
- DIP-8
- Series
- 데이터 수집 - 아날로그 변환기(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 | ADC0831CCN | Why it matters |
|---|---|---|---|
| Number of Input Channels | 2 (single-ended) or 1 (differential) | 1 (single-ended) | Determines how many analog signals can be measured; the ADC0832 supports two single-ended inputs or one differential input, while the ADC0831 supports only one single-ended input, so they are not directly substitutable in multi-channel designs. |
| Input Configuration | Single-ended or differential (software selectable) | Single-ended only | Differential input capability allows rejection of common-mode noise and measurement of floating signals; the ADC0831 lacks this, limiting its use in noisy or differential sensing applications. |
| Resolution | 8 bits | 8 bits | Both provide the same 8-bit resolution (256 codes), so quantization accuracy is equivalent between the two parts. |
| Interface Type | Serial (Microwire/SPI-compatible) | Serial (Microwire/SPI-compatible) | Both use a similar serial interface, simplifying firmware reuse, though the command/data framing differs due to channel selection in the ADC0832. |
| Supply Voltage Range | 4.5 V to 6.3 V | 4.5 V to 6.3 V | Identical supply requirements mean both can operate from the same 5 V rail without circuit changes. |
| Package | 8-pin PDIP (N) | 8-pin PDIP (N) | Same package and pin count allow drop-in board compatibility, though pin functions differ. |
| Operating Temperature Range | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | Both are rated for commercial temperature ranges, suitable for the same benign environments. |
| Pin Configuration / Function | CS, CH0, CH1, GND, DI, DO, CLK, VCC | CS, VIN(+), VIN(-), GND, VREF, DO, CLK, VCC | Pin functions differ significantly (channel inputs vs. differential/reference pins), so the parts are not pin-compatible substitutes despite sharing the same package. |
| Reference Input | VCC used as reference (no separate VREF pin) | Dedicated VREF pin | A dedicated reference pin on the ADC0831 allows ratiometric or external reference scaling, while the ADC0832 ties the reference to VCC, affecting measurement flexibility and accuracy. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC0832CCN | ADC0831CCN |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 31.25k | 31.25k |
| Number of Inputs | 2 | 1 |
| Input Type | Differential, Pseudo-Differential, Single Ended | Differential, Pseudo-Differential, Single Ended |
| Data Interface | SPI | 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 ~ 6.3V | 4.5V ~ 6.3V |
| Voltage - Supply, Digital | 4.5V ~ 6.3V | 4.5V ~ 6.3V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the primary difference between the ADC0832CCN and ADC0831CCN?
The ADC0832CCN is a 2-channel, 8-bit successive-approximation A/D converter, while the ADC0831CCN is a single-channel, 8-bit successive-approximation A/D converter. Both are manufactured by Texas Instruments (originally National Semiconductor) and are functionally similar except for channel count and the associated input multiplexer configuration.
Are the ADC0832CCN and ADC0831CCN pin-compatible?
No. The ADC0832CCN uses a 2-channel multiplexer with two analog inputs (CH0 and CH1) plus a DI/DO data line arrangement, whereas the ADC0831CCN has a single analog input (CH0) and a dedicated DO line. The pin functions and package pinouts differ, so they are not direct drop-in replacements.
What is the resolution and conversion architecture of both devices?
Both the ADC0832CCN and ADC0831CCN are 8-bit successive-approximation register (SAR) A/D converters. They provide 8-bit resolution and are specified for conversion times on the order of microseconds, suitable for general-purpose low-speed data acquisition.
What supply voltage range do the ADC0832CCN and ADC0831CCN support?
Both devices operate from a single 5 V supply (typically 4.5 V to 6.3 V) and are specified for operation over the commercial temperature range of 0°C to +70°C, consistent with the "C" suffix in the part number.
How do the serial interfaces of the ADC0832CCN and ADC0831CCN differ?
Both use a serial interface compatible with the Microwire/SPI protocol. The ADC0832CCN uses a multiplexed DI/DO line for channel selection and data output, while the ADC0831CCN uses a dedicated DO output line and does not require channel-selection bits, reflecting its single-channel design.
Can the ADC0831CCN be used as a substitute for the ADC0832CCN in an existing design?
Not directly. Because the ADC0831CCN has only one analog input and a different pinout and serial protocol (no channel-select bits), substituting it for the ADC0832CCN would require hardware and firmware changes. The ADC0832CCN can handle two channels, so it offers functionality the ADC0831CCN does not provide.
What package type do the ADC0832CCN and ADC0831CCN use?
Both the ADC0832CCN and ADC0831CCN are offered in an 8-pin plastic DIP (PDIP) package, indicated by the "N" suffix in the part number. This package is suitable for through-hole PCB assembly.
Which device should be selected for a single-channel application?
For a single-channel application, the ADC0831CCN is the appropriate choice because it provides one analog input with a simpler serial interface and no unused multiplexer channel. The ADC0832CCN would be selected when two analog input channels are required.