ADC0832CCN - 8-Bit 2-Ch SAR ADC, MICROWIRE Serial, 8-PDIP | TI
N.º de pieza: ADC0832CCN ⚠ Última compra| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.3 | $5,30 |
| 10 | $4.75 | $47,50 |
| 100 | $4.2 | $420,00 |
| 500 | $3.65 | $1.825,00 |
| 1.000 | $3.1 | $3.100,00 |
ADC0832CCN Descripción general
A successive-approximation-register (SAR) ADC is a converter architecture that uses a binary search algorithm to resolve each conversion in a fixed number of clock cycles equal to the resolution. SAR ADCs are valued for deterministic latency, no pipeline delay, and excellent DC accuracy at moderate speeds, which makes them the dominant topology for industrial control, sensor read-out, and precision instrumentation in the 8-16 bit, 1 ksps to 1 Msps range. ADCICs in this family output data via a 4-wire MICROWIRE-style interface that maps directly to COPS processors and standard SPI shift registers.
Key features of the ADC0832CCN include 8-bit resolution (1 LSB = VREF/256), 2 analog input channels (one single-ended, one differential), a serial MICROWIRE-compatible data port, internal sample-and-hold, a maximum sampling rate of approximately 31 ksps, and 4.5V to 6.3V single-supply operation. The 8-PDIP package supports through-hole PCB assembly, which is convenient for prototyping, legacy designs, repair, and hobbyist applications where surface-mount assembly is impractical.
The internal SAR engine is clocked from the external serial interface clock; the converter uses an on-chip sample capacitor and an internal reference comparison path, allowing the user to connect an external reference (typically 5V) at the VREF pin. The serial I/O format is MSB-first with NRZ coding, and the chip-select line frames conversions, making the part simple to drive from a microcontroller UART or SPI peripheral in mode-0. The part draws only a few milliamps from a single supply and does not require a negative rail.
Typical applications include process control analog front ends, panel-meter and instrumentation read-out boards, sensor signal conditioning for thermocouples and strain gauges, portable handheld test equipment, and hobbyist or education projects that benefit from through-hole pinout. The wide 0C to 70C commercial temperature range and 8-PDIP package support retrofits in legacy designs originally specified around the ADC0831 family.
When designing with the ADC0832CCN, ensure the external reference is stable and decoupled at the VREF pin with a 0.1 uF ceramic capacitor, and that the analog input source impedance is below 10 kOhms to avoid conversion errors caused by the input sampling capacitor. Tie unused analog inputs to ground or to a defined mid-suprail voltage to minimize channel-to-channel crosstalk.
This page synthesizes distributor pricing from real-time stock feeds, pin-compatible drop-in alternatives including the cross-brand XD0832CC identified in web sources, and practical design notes that supplement the manufacturer datasheet.
Alternativas directas para ADC0832CCN — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADC0832CCN (mismo factor de forma y huella) — difiere en Package, Analog Input Range, Conversion Time, Operating Temperature, Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADC0831CCN
✅ Sustitución directa✓ En stock
$2.24 / unidad
Ver hoja de datos →ADC0832CCN/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADC0832BCN
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
XD0832CC
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX131AEPL+
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADC0820BCV
✅ Sustitución directa✓ En stock
$3.9 / unidad
Ver hoja de datos →ADC0832CCN Valores máximos y características eléctricas
| Resolución | 8 bit |
| Number of Analog Input Channels | 2 (1 single-ended, 1 differential) |
| Architecture | SAR (Successive Approximation) |
| Frecuencia de muestreo | 31 ksps |
| Data Interface | NSC MICROWIRE-compatible Serial (SPI-compatible, mode 0) |
| Tensión de alimentación | 4.5 V to 6.3 V (single supply) |
| Tensión de referencia | External, applied to VREF pin |
| Temperatura de funcionamiento | 0 C to 70 C |
| Encapsulado | 8-PDIP (0.300 inch, 7.62 mm) |
| Tipo de montaje | Through-Hole |
| Nivel MSL | 1 (unlimited) |
| Lead Free | Contains lead (legacy through-hole) |
Configuración de pines de ADC0832CCN
| Pin 1 | CS — Chip Select, active high |
| Pin 2 | CH0 — Analog Input Channel 0 (single-ended) |
| Pin 3 | CH1+ — Analog Input Channel 1 non-inverting (differential +) |
| Pin 4 | CH1- — Analog Input Channel 1 inverting (differential -) |
| Pin 5 | GND — Ground |
| Pin 6 | DO — Serial Data Output (MICROWIRE) |
| Pin 7 | CLK — Serial Clock Input |
| Pin 8 | VCC — Positive Supply Voltage (4.5V to 6.3V) |
Aplicaciones típicas
ADC0832CCN es adecuado para 6 aplicacións: Process Control Analog Front End, Panel Meter and Instrumentation Read-Out, Sensor Signal Conditioning Board, Portable Handheld Test Equipment, Hobbyist and Education Projects, Legacy Industrial Retrofit and Repair.
Process Control Analog Front End
The ADC0832CCN fits process control front-end boards that read 4-20 mA loopback signals or 0-5V transducer outputs into a PLC or microcontroller. Its 2 input channels (one single-ended, one differential) match the typical 'process variable + redundant sensor' topology used in PID loops, and its 8-bit resolution (1 LSB = VREF/256) is sufficient for control-loop setpoints where 0.4% granularity is acceptable. The MICROWIRE serial port isolates the analog front end from digital noise on the host SPI bus, and the 4.5-6.3V supply matches the 5V rails common in industrial enclosures.
Recomendado
Panel Meter and Instrumentation Read-Out
Digital panel meters and bench instruments that display voltage, current, or temperature on a 7-segment LCD or LED readout typically need only 8-10 bits of resolution. The ADC0832CCN's 8-bit SAR core, 2-channel input multiplexer, and through-hole 8-PDIP package make it ideal for retrofitting older panel-meter designs where the host MCU is already wired for MICROWIRE serial. The 0-70 C commercial range covers indoor instrumentation, and the simple 5V single-supply operation eliminates the auxiliary rails that complicate panel-meter power design.
Recomendado
Sensor Signal Conditioning Board
Thermocouple, thermistor, and strain-gauge sensor boards that condition a low-level analog signal into a digital reading for a host processor benefit from the ADC0832CCN's differential input channel. The CH1+/CH1- differential pair cancels common-mode noise picked up by long sensor cables, while the single-ended CH0 handles a single-ended reference like a panel-mount potentiometer. The 31 ksps sample rate is more than adequate for thermal loops (bandwidth < 10 Hz) and bridges (bandwidth < 1 kHz), and the 8-PDIP package simplifies hand-soldered prototype boards used during sensor characterization.
Recomendado
Portable Handheld Test Equipment
Handheld multimeters, cable testers, and field service tools that read 1-3 analog signals from a battery-powered unit benefit from the ADC0832CCN's modest supply current and single 5V rail operation. The MICROWIRE serial interface pairs naturally with low-pin-count microcontrollers used in handheld designs (e.g. COP8 or MSP430), and the 8-PDIP through-hole package survives the mechanical stress of repeated bench rework. The 31 ksps sample rate easily supports slow-update handheld displays (refresh < 100 Hz) without aliasing concerns.
Recomendado
Hobbyist and Education Projects
Educational labs, Arduino-shield retrofits, and breadboard-friendly hobbyist projects benefit from the ADC0832CCN's through-hole 8-PDIP footprint, which drops directly into a breadboard or perfboard without SMD soldering. The MICROWIRE serial protocol is well documented in textbooks and legacy TI app notes, and the 5V supply matches the 5V-tolerant Arduino and Raspberry Pi GPIO. The 8-bit resolution is sufficient for teaching sampling theory, aliasing, and quantization concepts without overwhelming students with high-resolution device complexity.
Recomendado
Legacy Industrial Retrofit and Repair
Replacing failed ADC0832CCN parts in legacy industrial controllers, PLC analog input cards, and factory automation equipment built in the 1990s-2000s is a key use case. The original ADC0832CCN is last-time-buy, but the pin-compatible XD0832CC from XINNENGDA and the TI ADC0832CCN/NOPB lead-free variant keep legacy machines running without PCB rework. The drop-in replacement enables field service technicians to swap the IC without changing the surrounding signal-conditioning op-amps, references, or isolators.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADC0832CCN — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADC0831CCN | ADC0832CCN/NOPB | ADC0832BCN | XD0832CC | MAX131AEPL+ | ADC0820BCV |
|---|---|---|---|---|---|---|---|
| Package | 8-PDIP (N) | 8-PDIP (N) - same | 8-PDIP (N) - same | 8-PDIP (N) - same | 8-PDIP (N) - same | 8-PDIP (N) - same | 20-PDIP (V) - different |
| Brand | Texas Instruments | Texas Instruments (same) | Texas Instruments (same) | Texas Instruments (same) | XINNENGDA (cross-brand) | Analog Devices (cross-brand) | Texas Instruments (same) |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | Flash |
| Serial Interface | MICROWIRE (SPI mode 0) | MICROWIRE (SPI mode 0) | MICROWIRE (SPI mode 0) | MICROWIRE (SPI mode 0) | MICROWIRE (SPI mode 0) | Parallel or Serial | Parallel |
Diferenciadores clave
- Differential input channel in an 8-PDIP package (frente a MAX131AEPL+)
- MICROWIRE/SPI-mode-0 compatibility (frente a ADC0820BCV)
- Industry-standard 31 ksps sample rate (frente a XD0832CC)
Notas de diseño
Decouple VCC (pin 8) with a 0.1 uF ceramic capacitor placed within 3 mm of the supply pin, plus a bulk 10 uF electrolytic or tantalum capacitor on the same node. Per the ADC0831/0832 family datasheet, the converter draws a few milliamps during conversion; the 0.1 uF cap supplies the dynamic current and the bulk cap holds up the rail against host SPI bus activity. The VREF input (where exposed on 14/20-pin variants, internally tied on 8-pin) should also be decoupled with 0.1 uF in parallel with 10 uF for low-impedance reference voltage under SAR switching transients.
Do not drive the analog inputs with a source impedance above 10 kOhms - the internal sample-and-hold capacitor (~5 pF) charges through this impedance during the acquisition phase, and excessive source impedance causes gain error and non-linearity. Add an op-amp buffer (e.g. MCP6001, OPA2333) between high-impedance sensors and the impedance series resistance. Tie unused analog pins (CH1- if differential is unused, or CH1+ if single-ended only) to mid-supply (VCC/2) to minimize channel-to-channel crosstalk during the sample phase.
Route the analog ground (AGND) and digital ground (DGND) as a star at the ADC0832CCN's pin 5, with the AGND path carrying only analog return currents and the DGND path carrying the SPI/MICROWIRE return currents. Keep the analog input traces short and guarded with a ground pour to minimize capacitive coupling from the CLK trace. Place the ADC08106X26 as far as practical from switching power inductors and high-current traces; the SAR architecture is susceptible to digital noise injection on VREF during the bit-trial transitions.
The MICROWIRE serial interface operates in SPI mode-0 (CPOL=0, CPHA=0) and is MSB-first. Clock frequencies up to ~1 MHz are supported per the family datasheet. Keep the CLK trace short (< 50 mm) and series-terminate if the trace exceeds 25 mm at MHz equal to the host clock frequency. Ensure CS transitions cleanly between conversions - a floating CS can spuriously start conversions and corrupt the channel-selection bits.
Información de cumplimiento
Standard ADC0832CCN is non-RoHS due to lead in the 8-PDIP leads/plating; the lead-free / RoHS-compliant variant is ADC0832CCN/NOPB (verified via Mouser). REACH status not explicitly confirmed in the web sources - flagged unknown. Not qualified for automotive AEC-Q100. No conflict-minerals disclosure in the verified web data.
