Part A
ADC0832CCN
Texas Instruments
- Lifecycle
- Active
- Stock
- 5986 PCS
- Package
- PDIP-8
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Not a drop-in replacement
The ADC0832CCN and ADC0817CCN are not functionally interchangeable. The ADC0832CCN is an 8-bit, 2-channel serial (SPI-compatible) A/D converter, while the ADC0817CCN is an 8-bit, 16-channel parallel-interface A/D converter. They differ in channel count, digital interface, package pinout, and conversion architecture, so the ADC0817CCN cannot directly replace the ADC0832CCN in an existing design without significant hardware and firmware changes.
Different channel count
Different digital interface
Different package pinout
Different conversion architecture
Parts at a glance
Part B
ADC0817CCN
Texas Instruments
- Lifecycle
- Active
- Stock
- 914 PCS
- Package
- DIP-40
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | ADC0817CCN | Why it matters |
|---|---|---|---|
| Resolution | 8 bits | 8 bits | Both are 8-bit converters, so quantization step size is equivalent for a given reference voltage. |
| Number of Input Channels | 2 single-ended / 1 differential | 16 single-ended / 8 differential | Channel count determines how many analog signals can be multiplexed into the converter without external muxing. |
| Architecture | Successive approximation (SAR) | Successive approximation (SAR) | SAR architecture affects conversion speed, latency, and suitability for multiplexed sampling. |
| Interface | Serial (Microwire/SPI-compatible) | Parallel (8-bit) | Serial vs parallel interface changes pin count, host wiring, and CPU bus requirements, directly affecting substitutability. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Supply compatibility ensures the part can drop into the same rail without level shifting or regulation changes. |
| Package | 8-pin DIP (PDIP) | 28-pin DIP (PDIP) | Package footprint and pin count must match the board layout for a direct physical replacement. |
| Conversion Time | 32 µs (typical) | 100 µs (typical) | Conversion time sets the maximum sampling rate and affects throughput in time-sensitive acquisition systems. |
| Operating Temperature Range | 0 °C to +70 °C (commercial) | 0 °C to +70 °C (commercial) | Temperature grade must meet the application environment for reliable operation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADC0832CCN | ADC0817CCN |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 8 | 8 |
| Sampling Rate(Per Second) | 31.25k | 10k |
| Number of Inputs | 2 | 16 |
| Input Type | Differential, Pseudo-Differential, Single Ended | Single Ended |
| Data Interface | SPI | 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 ~ 6.3V | 4.5V ~ 6V |
| Voltage - Supply, Digital | 4.5V ~ 6.3V | 4.5V ~ 6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key architectural differences between the ADC0832CCN and ADC0817CCN?
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 ADC0817CCN is an 8-bit successive-approximation ADC with a 16-channel multiplexer and 8-bit parallel (tri-state) output, housed in a 28-pin DIP. The ADC0832 provides two single-ended or one differential input channel, while the ADC0817 provides 16 single-ended channels.
Are the ADC0832CCN and ADC0817CCN pin-compatible or directly interchangeable?
No. The ADC0832CCN uses an 8-pin DIP package with a serial interface, while the ADC0817CCN uses a 28-pin DIP package with a parallel interface. The pin counts, pin functions, and package footprints differ, so they cannot be directly substituted without a board redesign.
How do the input channel configurations of the ADC0832CCN and ADC0817CCN compare?
The ADC0832CCN offers a 2-channel multiplexer configurable as two single-ended inputs or one differential input pair. The ADC0817CCN offers a 16-channel single-ended multiplexer. Designs requiring more than two analog inputs should use the ADC0817CCN, while the ADC0832CCN suits low-channel-count or differential measurement applications.
What interface differences affect system design when choosing between the ADC0832CCN and ADC0817CCN?
The ADC0832CCN uses a serial interface (CS, CLK, DI, DO) that requires only a few microcontroller pins, making it suitable for compact designs. The ADC0817CCN uses an 8-bit parallel tri-state output bus plus address lines for channel selection, requiring more I/O pins but offering higher throughput to a parallel bus host. The interface choice directly affects PCB routing and host pin budget.
Do the ADC0832CCN and ADC0817CCN share the same supply voltage and reference requirements?
Both devices are 5 V-class CMOS ADCs intended for single-supply operation with the analog input range referenced to the supply and ground. The ADC0832CCN supports a VCC range of 4.5 V to 6.3 V with the reference derived from VCC. The ADC0817CCN operates from a 5 V supply with its reference set by the VREF/2 pin. Designers should confirm exact limits against the respective manufacturer datasheets before finalizing the supply and reference network.
Which device is better suited for high-channel-count data acquisition?
The ADC0817CCN is better suited for high-channel-count data acquisition because its 16-channel multiplexer allows many analog sources to be scanned by a single converter. The ADC0832CCN, with only two channels, is intended for simpler signal chains where channel count is low and serial interface pin savings are more important.
What conversion architecture and resolution do the ADC0832CCN and ADC0817CCN use?
Both are 8-bit successive-approximation register (SAR) ADCs. The ADC0832CCN performs 8-bit conversions with a serial data output, and the ADC0817CCN performs 8-bit conversions with parallel data output. Because both use SAR architecture at 8-bit resolution, selection between them is driven primarily by channel count, interface type, and package size rather than resolution.