ADC12048CIVF/NOPB - 12-Bit+Sign 216kHz 8-Ch SAR ADC | TI
N.º da peça: ADC12048CIVF/NOPB ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $13.5 | $13,50 |
| 10 | $12.15 | $121,50 |
| 100 | $10.8 | $1.080,00 |
| 500 | $9.65 | $4.825,00 |
| 1.000 | $8.55 | $8.550,00 |
ADC12048CIVF/NOPB Visão geral
A SAR ADC (Successive-Approximation-Register analog-to-digital converter) is a class of Nyquist-rate data converter that uses a binary-search algorithm to digitize an analog input in N clock cycles, where N is the resolution. SAR ADCs are valued for their deterministic latency, low power consumption, and excellent DC accuracy with no pipeline delay, which makes them the architecture of choice for multiplexed multi-channel data-acquisition systems, motor control feedback, and instrumentation front ends. The ADC12048 belongs to the broader hierarchy of analog-to-digital converters (ADCs) -> data converters -> signal-chain ICs -> mixed-signal semiconductors.
Key features include 12-bit + sign resolution (effectively 13-bit dynamic range), an 8-input analog multiplexer (configurable as 4 differential or 8 single-ended channels), self-calibration for offset and gain, a track-and-hold front end, and a sampling throughput of up to 216 kilosamples per second (kSPS). The wide dynamic range and differential input capability make the ADC well-suited to digitizing small transducer signals in noisy industrial environments without external instrumentation amplifiers. Parallel output simplifies the digital interface and removes SPI/I2C timing overhead at the cost of wider board routing.
The architecture combines a capacitive charge-redistribution DAC with the SAR logic and an on-chip track-and-hold amplifier, and it provides self-calibration and user-initiated calibration modes to maintain specified accuracy across temperature. The internal MUX and reference input structure together with the parallel output interface allow the part to serve as a complete data-acquisition front end in a single 44-pin surface-mount IC, replacing multi-chip discrete solutions and reducing board space.
Typical applications include industrial process control, multi-channel data-acquisition systems, motor control position and current feedback, patient monitoring instrumentation, and battery-cell monitoring in UPS and telecom systems. Specific scenarios include PLC analog input modules, multi-axis servo drives, and remote sensor hubs requiring 8 simultaneous analog channels at moderate throughput.
When designing with this part, ensure that the analog and digital supplies are properly decoupled and that the analog input common-mode voltage is within the specified range; note that the reference voltage determines full-scale accuracy and must be stable to realize the device's rated performance. Use the self-calibration mode at power-up and after any significant temperature change.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes that go beyond a single datasheet summary to help you select and source the ADC12048CIVF/NOPB with confidence.
Alternativas drop-in para ADC12048CIVF/NOPB — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADC12048CIVF/NOPB (mesmo formato e footprint) — diferindo em Architecture, Input Type, Number of Channels, Resolution, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADC12048CIVF
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ADC12048CIVFX/NOPB
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ADC12048CIVF/NOPB
✅ Drop-In✓ Em estoque
$8.55 / unidade
Ver ficha técnica →ADC12038
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ADC12040CIVY
✅ Drop-In✓ Em estoque
$5.52 / unidade
Ver ficha técnica →ADC12048CIVF/NOPB Classificações máximas e características elétricas
| Resolução | 12 bit + sign |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 8 (4 differential / 8 single-ended) |
| Taxa de amostragem | 216 kSPS |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 5 V |
| Data Interface | Parallel (12-bit + sign) |
| Input Type | Differential, Pseudo-Differential, Single-Ended |
| Reference Type | External |
| Configuration | MUX-S/H-ADC |
| Temperatura de operação | -40C to +85C |
| Encapsulamento / Caixa | 44-PQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Number of Terminals | 44 |
| Terminal Form | Gull Wing |
| Temperature Grade | Industrial |
| Lead Finish | Matte Tin (NOPB) |
| Status RoHS | Compliant (lead-free) |
Configuração de pinos do ADC12048CIVF/NOPB
| Pino 1 | AVCC — Analog +5V supply |
| Pino 2 | AGND — Analog ground |
| Pino 3 | REF — External reference voltage input |
| Pino 4 | REFGND — Reference ground |
| Pino 5 | CH0 — Analog input channel 0 (positive) |
| Pino 6 | CH0- — Analog input channel 0 (negative) |
| Pino 7 | CH1 — Analog input channel 1 (positive) |
| Pino 8 | CH1- — Analog input channel 1 (negative) |
| Pino 9 | CH2 — Analog input channel 2 (positive) |
| Pino 10 | CH2- — Analog input channel 2 (negative) |
| Pino 11 | CH3 — Analog input channel 3 (positive) |
| Pino 12 | CH3- — Analog input channel 3 (negative) |
| Pino 13 | MUXOUT — Multiplexer output (to track-and-hold) |
| Pino 14 | SHIELD — Analog shield driver |
| Pino 15 | CAL — Calibration enable / control input |
| Pino 16 | CS — Chip select (active low) |
| Pino 17 | RD — Read strobe (active low) |
| Pino 18 | WR — Write / convert start (active low) |
| Pino 19 | CONVST — Conversion start (active low) |
| Pino 20 | INT — Interrupt output (end-of-conversion) |
| Pino 21 | EOC — End of conversion flag |
| Pino 22 | OE — Output enable (active low) for parallel bus |
| Pino 23 | MODE — Mode select (differential vs single-ended) |
| Pino 24 | D11/SIGN — Data bit 11 / sign bit (MSB) |
| Pino 25 | D10 — Data bit 10 |
| Pino 26 | D9 — Data bit 9 |
| Pino 27 | D8 — Data bit 8 |
| Pino 28 | D7 — Data bit 7 |
| Pino 29 | D6 — Data bit 6 |
| Pino 30 | D5 — Data bit 5 |
| Pino 31 | D4 — Data bit 4 |
| Pino 32 | D3 — Data bit 3 |
| Pino 33 | D2 — Data bit 2 |
| Pino 34 | D1 — Data bit 1 |
| Pino 35 | D0 — Data bit 0 (LSB) |
| Pino 36 | DGND — Digital ground |
| Pino 37 | DVCC — Digital +5V supply |
| Pino 38 | CLK — External conversion clock input |
| Pino 39 | MUXSEL — Multiplexer address (MSB) |
| Pino 40 | MUX2 — Multiplexer address bit 2 |
| Pino 41 | MUX1 — Multiplexer address bit 1 |
| Pino 42 | MUX0 — Multiplexer address bit 0 (LSB) |
| Pino 43 | TEST — Factory test pin (leave floating or ground per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
ADC12048CIVF/NOPB é adequado para 6 aplicaçãos: Industrial Process Control Analog Input Module, Multi-Axis Servo Drive Current Feedback, Multi-Channel Data Acquisition System (DAQ), Patient Monitoring Instrumentation Front End, Battery Cell Monitoring in UPS and Telecom Systems, Industrial Sensor Hub / Remote Telemetry.
Industrial Process Control Analog Input Module
The ADC12048CIVF/NOPB is well matched to industrial PLC analog input modules where 8 channels of 12-bit + sign data must be acquired from thermocouples, RTDs, and 4-20 mA loop transmitters. The internal MUX and parallel 12-bit + sign interface remove the need for an external analog front end and an external ASIC, while the -40C to +85C industrial temperature range covers most factory environments. Self-calibration corrects gain and offset drift across the operating range, eliminating periodic manual calibration. Compared with switching regulator-based front ends, the SAR architecture produces no switching noise that could otherwise alias into the conversion result.
Recomendado
Multi-Axis Servo Drive Current Feedback
Multi-axis industrial servo drives use the ADC12048CIVF/NOPB to digitize motor-winding current sense signals from up to 4 differential pairs, simultaneously supporting a 2-axis drive per ADC. The 216 kSPS throughput synchronizes with PWM carrier frequencies of 10-20 kHz typical of servo loops, sampling each current shunt multiple times per PWM cycle to support field-oriented control. Deterministic SAR latency (one conversion completes in a fixed number of clocks) simplifies loop timing analysis versus pipeline ADCs. The 5 V single-supply design integrates directly with the servo drive's logic-level I/O without level shifters.
Recomendado
Multi-Channel Data Acquisition System (DAQ)
Standalone bench and rack-mount data-acquisition systems use the ADC12048CIVF/NOPB to digitize 8 analog signals at 216 kSPS aggregate rate, recording measurements to a host FPGA or microcontroller through the parallel 12-bit + sign interface. The external reference lets designers trade noise floor (5 V reference for full range) against input dynamic range (lower reference for higher resolution per volt). Self-calibration ensures gain accuracy remains within the datasheet specification across multi-hour test sweeps without operator intervention. The 44-pin PQFP footprint integrates cleanly into 4-layer PCBs alongside op-amps and digital isolators.
Recomendado
Patient Monitoring Instrumentation Front End
Patient monitors and clinical instrumentation use the ADC12048CIVF/NOPB to capture ECG, EEG, respiration, and temperature signals from multiple sensor inputs. The 12+1-bit resolution provides more than enough dynamic range for sub-millivolt biopotential signals when paired with an external instrumentation amplifier. The SAR architecture's deterministic latency simplifies the timing of synchronized multi-lead ECG acquisition (typically 250-500 samples per second per channel, well within the 216 kSPS budget). Industrial temperature grade supports controlled clinical environments; medical safety certification is the integrator's responsibility.
Recomendado
Battery Cell Monitoring in UPS and Telecom Systems
Large uninterruptible power supplies and 48 V telecom battery banks use the ADC12048CIVF/NOPB to monitor individual cell voltages across a series stack of lead-acid or lithium cells. The 8-channel MUX supports 4 to 8 cells per ADC, and the 12+1-bit resolution provides 1 mV or finer voltage granularity when paired with a 5 V reference. Self-calibration compensates for temperature-induced gain error inside the equipment cabinet. The 5 V single-supply operation simplifies the isolated power architecture typical of high-voltage battery stacks, and the parallel output enables fast simultaneous sampling of an entire cell string.
Recomendado
Industrial Sensor Hub / Remote Telemetry
Remote industrial sensor hubs aggregating strain gauge, pressure, flow, and temperature transmitters use the ADC12048CIVF/NOPB to digitize 8 analog sensor outputs into a parallel 12-bit + sign data stream for a microcontroller or wireless modem. The differential input capability rejects ground-loop noise in long sensor cable runs typical of outdoor installations. Self-calibration at power-up compensates for sensor offset and reference aging, enabling months of unattended operation. The industrial temperature grade plus the 5 V operation directly accept the 24 V industrial loop power rails through a simple regulator.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADC12048CIVF/NOPB — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADC12048CIVF | ADC12048CIVFX/NOPB | ADC12040CIVY |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 44-PQFP (10x10 mm) | 44-PQFP (10x10 mm) | 44-PQFP (10x10 mm) | 44-PQFP (10x10 mm) |
| Resolution | 12 bit + sign | 12 bit + sign | 12 bit + sign | 10 bit |
| Sampling Rate | 216 kSPS | 216 kSPS | 216 kSPS | 216 kSPS |
| Number of Channels | 8 (4 diff) | 8 (4 diff) | 8 (4 diff) | 8 (4 diff) |
| Analog Supply | 5 V | 5 V | 5 V | 5 V |
| Data Interface | Parallel (12-bit + sign) | Parallel (12-bit + sign) | Parallel (12-bit + sign) | Parallel (10-bit) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Lead Finish | Lead-free (matte tin) /NOPB | Lead-bearing (not RoHS) | Lead-free /NOPB | Lead-free |
Principais diferenciais
- 12-bit + sign resolution (13-bit dynamic range) over a 4-differential / 8-single-ended input MUX (vs ADC12040CIVY)
- Fully integrated 8-channel MUX, track-and-hold, and self-calibration engine in a single PQFP IC (vs Discrete MUX + external S/H + SAR ADC board)
- Parallel 12-bit + sign output eliminates SPI/QSPI clock-frequency constraints on the host processor (vs Serial-interface ADC (e.g. SPI-based 12-bit ADC))
Notas de projeto
Both the analog (AVCC) and digital (DVCC) 5 V supply pins must be decoupled with a 100 nF ceramic capacitor placed within 5 mm of each pin, with the trace to the capacitor ground being direct and wide. A bulk 10 uF aluminum-polymer or ceramic bypass capacitor should be placed near the ADC to supply charge-transient demand during conversion. Per the datasheet, AVCC noise must be kept below 50 mVpp to maintain 12-bit SNR; a ferrite bead between the digital 5 V and analog 5 V rails is recommended.
Although the ADC12048 is pin-compatible with the ADC12040 in the same 44-PQFP package, the lower-cost 10-bit ADC12040 returns only 10-bit data; do not interpret the upper two data bits as sign and gain. Always verify that the FS (full-scale) reference voltage matches the input range: Vref = 5 V is full-scale at the input, while Vref = 2.5 V halves the input range and approximately doubles the LSB size for high-resolution low-signal measurements. Avoid driving the analog inputs beyond Vref +/- 100 mV; the internal ESD diodes will conduct and distort the conversion result.
Keep analog and digital grounds separated and join them at a single point directly under the ADC's AGND/DGND pins. Route the 12-bit parallel data bus using matched-length traces with 50 ohm characteristic impedance to avoid data-corrupting reflections, and place 22 ohm series-termination resistors at the digital outputs if the bus length exceeds 50 mm. The analog input traces should be guarded by AGND traces on each side to reject digital switching noise; the SHIELD pin provides a driven guard signal that should be routed alongside the analog input traces for maximum CMRR.
Informações de conformidade
The /NOPB suffix denotes the lead-free, RoHS-compliant matte-tin finish. No AEC-Q100 automotive qualification; for automotive applications use an automotive-grade ADC such as the Tiva or Hercules MCU family. Halogen-free status not explicitly stated in the verified datasheet excerpt.