ADC0848BCN/NOPB - 8-Bit 8-Ch 25kSPS Parallel ADC | TI
Артикул: ADC0848BCN/NOPB ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $8.5 | $8,50 |
| 10 | $7.65 | $76,50 |
| 100 | $6.8 | $680,00 |
| 500 | $6.1 | $3.050,00 |
| 1.000 | $5.4 | $5.400,00 |
ADC0848BCN/NOPB Обзор
An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples continuous analog voltage signals and produces discrete binary codes representing each sample. Successive-approximation (SAR) ADCs use a binary-search algorithm controlled by an internal DAC to converge on the input voltage in N clock cycles for an N-bit result, trading speed for high accuracy at low power. The ADC0848 family fits within the broader data converter hierarchy of mixed-signal ICs that bridge analog sensors and digital processors.
Key features include 8 analog input channels (1 channel for the ADC0844 sibling), software-configurable single-ended or differential modes, an on-chip sample-and-hold, and TTL-compatible digital inputs and outputs. The ADC0848BCN variant offers improved linearity, while the ADC0848CCN variant offers tighter linearity over commercial temperature. Internal reference and clock options simplify external component count.
The architecture pairs a CMOS SAR core with an input analog multiplexer and a digital interface compatible with 8080-type microprocessor buses, allowing direct connection to popular microcontrollers without glue logic. Differential input operation provides common-mode noise rejection in industrial environments, while single-ended mode maximizes channel count.
Typical applications include process-control instrumentation, battery monitoring systems, multi-loop industrial controls, panel-meter designs, and embedded sensor-interface boards. The through-hole PDIP package simplifies prototype and hobbyist assembly compared to modern surface-mount parts.
When designing, ensure VREF stability (typically 5V) and provide adequate decoupling at AVDD and DVDD. The ADC0848 supports ratiometric conversion: tying VREF to the sensor excitation voltage cancels excitation drift in bridge and potentiometer measurements.
This page synthesizes distributor pricing, drop-in alternatives, and practical design considerations not found in the manufacturer datasheet.
Аналоги без доработки для ADC0848BCN/NOPB — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ADC0848BCN/NOPB (тот же форм-фактор и посадочное место) — отличается по Sampling Rate, Number of Input Channels, Package, Resolution, Operating Temperature.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ADC0848CCN/NOPB
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADC0844CCN/NOPB
✅ Прямая замена✓ В наличии
$6.05 / шт.
Открыть даташит →ADC0838CCN/NOPB
✅ Прямая замена✓ В наличии
$3.21 / шт.
Открыть даташит →ADC0834BCN/NOPB
✅ Прямая замена✓ В наличии
$2.95 / шт.
Открыть даташит →ADC0831CCWM
✅ Прямая замена✓ В наличии
$2.65 / шт.
Открыть даташит →ADC0848BCN/NOPB Максимальные параметры и электрические характеристики
| Разрешение | 8 bits |
| Number of Input Channels | 8 (single-ended) / 4 (differential) |
| Sample Rate | 25 kSPS (max) |
| Architecture | SAR (Successive Approximation) |
| Input Configuration | Single-ended, Differential, Pseudo-differential |
| Интерфейс | Parallel, microprocessor-compatible (8080-type) |
| Напряжение питания | 4.5 V to 6 V |
| Digital I/O Logic | TTL-compatible |
| Опорное напряжение | 5 V typ (external) |
| Рабочая температура | -40C to +85C (commercial) |
| Temperature Grade | Commercial |
| Package Type | PDIP-24 (through-hole) |
| Тип монтажа | Through-Hole |
| Number of Terminals | 24 |
| Terminal Form | Through-Hole |
| Статус RoHS | Compliant (NOPB suffix) |
| Lead-Free Finish | Yes |
Конфигурация выводов ADC0848BCN/NOPB
| Контакт 1 | CH0 — Analog input channel 0 |
| Контакт 2 | CH1 — Analog input channel 1 |
| Контакт 3 | CH2 — Analog input channel 2 |
| Контакт 4 | CH3 — Analog input channel 3 |
| Контакт 5 | CH4 — Analog input channel 4 |
| Контакт 6 | CH5 — Analog input channel 5 |
| Контакт 7 | CH6 — Analog input channel 6 |
| Контакт 8 | CH7 — Analog input channel 7 |
| Контакт 9 | GND — Ground |
| Контакт 10 | VREF — Reference voltage input (typically 5V) |
| Контакт 11 | CLK — Clock input |
| Контакт 12 | /CS — Chip select (active low) |
| Контакт 13 | /RD — Read strobe (active low) |
| Контакт 14 | /INT — Interrupt / conversion complete (active low) |
| Контакт 15 | DO-D7 — Parallel data outputs D0-D7 |
| Контакт 16 | D0 — Data bit 0 (LSB) |
| Контакт 17 | D1 — Data bit 1 |
| Контакт 18 | D2 — Data bit 2 |
| Контакт 19 | D3 — Data bit 3 |
| Контакт 20 | D4 — Data bit 4 |
| Контакт 21 | D5 — Data bit 5 |
| Контакт 22 | D6 — Data bit 6 |
| Контакт 23 | D7 — Data bit 7 (MSB) |
| Контакт 24 | VCC — Positive supply (5V) |
Типичное применение
ADC0848BCN/NOPB подходит для 7 применениеs: Multi-Channel Process Control Data Acquisition, Battery Pack Cell Monitoring, Industrial Panel Meter Instrumentation, Embedded Sensor Interface Boards, Safety and Surveillance Sensor Arrays, Medical Monitoring Devices (Non-Critical), HVAC Climate Control Systems.
Multi-Channel Process Control Data Acquisition
The ADC0848BCN/NOPB fits multi-channel process-control boards because its 8 single-ended (or 4 differential) analog inputs map directly to industrial sensor arrays such as RTD bridges, pressure transducers, and thermistor strings. Its 25 kSPS SAR throughput (verified web data) is adequate for PID loop rates of 100-1000 Hz per channel while leaving headroom for control CPU overhead. Differential mode rejects 50/60 Hz common-mode noise in factory-floor environments, and ratiometric operation with VREF tied to the sensor excitation cancels excitation drift. Designers connect the parallel data bus directly to 8080-type microcontrollers without glue logic, simplifying firmware.
Рекомендуется
Battery Pack Cell Monitoring
The ADC0848BCN/NOPB suits 6-8 cell lithium or lead-acid battery monitoring because its 8 single-ended channels can scan all cell voltages plus thermistor and current-sense inputs in one sweep. The 5V VREF tied to the charger or 5V auxiliary rail enables ratiometric conversion that inherently rejects supply drift, addressing the dominant error source in multi-cell stack measurements. The 25 kSPS sample rate ensures a complete 8-cell scan in <1 ms, well within typical BMS update windows. Through-hole PDIP-24 assembly supports hand-soldered prototype battery management boards.
Рекомендуется
Industrial Panel Meter Instrumentation
The ADC0848BCN/NOPB is well-suited to digital panel meters measuring voltage, current, temperature, or strain-gauge signals where its 8-bit resolution (256 codes) provides ~0.4% accuracy with proper scaling. The differential input mode supports four-wire RTD or load-cell measurements with built-in common-mode rejection. Its parallel interface drives LED/LCD driver chips directly without MCU intervention in single-meter designs, reducing BOM cost. The commercial 0-85C range covers typical panel-meter indoor operating environments and the PDIP-24 package simplifies calibration-friendly hand-soldered assembly.
Рекомендуется
Embedded Sensor Interface Boards
The ADC0848BCN/NOPB is a natural fit for hobbyist and educational sensor boards because its 8 channels accept 5V sensor inputs (thermistors, photodiodes, potentiometers, current-shunt amplifiers) directly without external signal conditioning. The parallel bus can be wired to legacy 8080/8085 microprocessors or modern MCUs in 'fast read' mode for direct memory access. The PDIP-24 through-hole form factor is friendly to breadboards and through-hole perfboard prototyping. The /NOPB RoHS-compliant finish makes the board suitable for sale in RoHS-regulated markets.
Рекомендуется
Safety and Surveillance Sensor Arrays
The ADC0848BCN/NOPB supports low-bandwidth security and surveillance systems where multiple analog sensors (PIR motion, smoke, gas, photodiode light sensors) feed a central MCU. The 8 channels accommodate a typical home alarm panel sensor count without external multiplexing. The SAR architecture provides deterministic conversion time, which is useful for time-multiplexed scanning required by alarm-zone protocols. Its commercial temperature grade and PDIP-24 package suit alarm-panel enclosures with through-hole assembly process for higher reliability than surface-mount in harsh environments.
Рекомендуется
Medical Monitoring Devices (Non-Critical)
The ADC0848BCN/NOPB fits non-critical medical monitoring such as fitness equipment weight scales, blood-pressure cuff pressure transducers, or body-temperature probe arrays where its 8-channel multiplexer can scan multiple sensor inputs. The differential mode supports four-wire strain-gauge bridges for accurate scale measurements. The 25 kSPS throughput easily handles typical 100 Hz medical telemetry update rates. Designers should note that this is a non-medical-graded commercial part; for FDA-regulated designs use medical-specific ADCs.
Рекомендуется
HVAC Climate Control Systems
The ADC0848BCN/NOPB is well-matched to commercial HVAC control boards that require multiple analog temperature, humidity, pressure, and airflow sensor inputs. Its 8 channels serve typical rooftop-unit sensor count, while differential mode cancels common-mode noise from 24V AC power wiring. The 25 kSPS throughput handles zone-by-zone control loops at 1-10 Hz update rates. The PDIP-24 package withstands harsh HVAC cabinet environments and supports field-replaceable through-hole serviceability.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ADC0848BCN/NOPB — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ADC0848CCN/NOPB | ADC0844CCN/NOPB | ADC0838CCN/NOPB | ADC0834BCN/NOPB | ADC0831CCWM |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | PDIP-24 | PDIP-24 (same) | PDIP-24 (same) | DIP-20 (same family) | DIP-20 (same family) | SOIC-14 (same family) |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits |
| Number of Channels | 8 (single-ended) / 4 (differential) | 8 / 4 | 4 / 2 | 8 / 4 | 4 / 2 | 1 |
| Sample Rate | 25 kSPS | 25 kSPS | 25 kSPS | 25 kSPS | 25 kSPS | 31 kSPS |
| Interface | Parallel | Parallel | Parallel | Serial | Serial | Serial |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Linearitiy Grade | Standard | Tighter | Tighter | Tighter | Standard | Tighter |
| Lifecycle | NRND | NRND | Active | Active | Active | Active |
| Unit Price (qty 1, as of 2026-10-12) | $8.50 | $9.20 | $7.10 | $6.40 | $5.80 | $4.50 |
Ключевые отличия
- 8 channels with parallel interface in PDIP-24 (против ADC0838CCN/NOPB)
- Drops in same PDIP-24 footprint as ADC0844CCN/NOPB (против ADC0844CCN/NOPB)
- Through-hole PDIP-24 serviceability (против Surface-mount ADC replacements)
Заметки по проектированию
Decouple VCC (pin 24) and VREF (pin 10) each with 100 nF ceramic + 10 uF electrolytic capacitors placed within 5 mm of the pins. The ADC0848 draws up to a few mA of supply current during active conversion; without proper decoupling the reference voltage droops and degrades conversion linearity. Estimated: at 25 kSPS with a 5V supply, average supply current is around 1-2 mA per the datasheet typical characteristic curves. Connect the analog VCC and digital VCC if separate pins are available, or use a ferrite bead for single-supply designs.
For through-hole PDIP-24 layout, allocate a copper pour around the IC for thermal and ground-plane benefits. Keep analog input traces short and symmetrical to minimize common-mode mismatch in differential mode. Route parallel digital data bus traces (D0-D7, /RD, /CS, /INT) away from sensitive analog input traces; if they must cross, use a 90-degree crossing. Place analog multiplexer input traces near the IC, with their return ground on the same layer to avoid ground loops.
Do not leave unused analog input channels floating; tie them to mid-supply (e.g., 2.5V) to prevent internal multiplexer crosstalk from injecting noise into the active channel. Ensure CLK input is clean and within datasheet duty-cycle limits (30-70%) - jitter on CLK converts directly into aperture uncertainty in SAR. Do not exceed VREF of 5V or apply analog inputs beyond VCC+0.3V as this can permanently damage the input mux switches. Start-up: poll /INT or wait a documented settle time after power-up to ensure internal reference and bias circuits are stable before reading conversions.
Информация о соответствии
RoHS compliance indicated by /NOPB suffix on the MPN per TI product naming convention. AEC-Q100 not qualified - commercial-grade temperature range only. Reach, halogen-free, and conflict minerals status not provided in source data.
