ISL267450IUZ-T7A - 12-Bit 1MSPS SAR ADC, MSOP-8 | Renesas
N.º da peça: ISL267450IUZ-T7A ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.95 | $5,95 |
| 10 | $5.36 | $53,60 |
| 100 | $4.76 | $476,00 |
| 500 | $4.28 | $2.140,00 |
| 1.000 | $3.81 | $3.810,00 |
ISL267450IUZ-T7A Visão geral
A SAR ADC is a successive-approximation-register analog-to-digital converter that uses a binary-search algorithm against an internal DAC to resolve each conversion in N clock cycles for an N-bit output. SAR ADCs occupy the middle ground between flash ADCs (fast, power-hungry, expensive) and sigma-delta ADCs (slow, very high resolution). They are favored in industrial data acquisition, motor control feedback loops, and instrumentation where single-shot latency, deterministic sampling, and moderate sample rates (100kSPS to 10MSPS) are required. The ISL267450IUZ-T7A sits in the 1MSPS class - the workhorse rate for multiplexed multi-channel systems.
Key features include 12-bit resolution with no missing codes, 1MSPS throughput, differential input range of 2*VREF, integrated reference, SPI/QSPI/MICROWIRE-compatible serial interface, and low power dissipation (typically under 10mW at 1MSPS). The device maintains excellent linearity over supply and temperature variations, with integral nonlinearity (INL) and differential nonlinearity (DNL) performance that suits precision measurement. The MSOP-8 footprint is pin-compatible with the legacy AD7450 and the AD7450A, simplifying board-level substitution.
Typical applications include industrial process control, multi-channel data acquisition systems, portable instrumentation, battery-powered monitoring, and motor control position feedback. The 2.7V to 5.25V supply range covers both 3.3V and 5V analog rails found in mixed-signal embedded designs.
When designing with the ISL267450IUZ-T7A, observe the datasheet's input common-mode and reference decoupling guidelines. A 10uF tantalum plus 0.1uF ceramic bypass network close to the supply pin is recommended for low-noise operation. The serial interface timing budget must allow for 13 SCLK cycles per conversion at full throughput.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes that complement - not duplicate - the manufacturer datasheet content for engineers evaluating the ISL267450IUZ-T7A.
Alternativas drop-in para ISL267450IUZ-T7A — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ISL267450AIUZ-T7A
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ISL267450IUZ-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD7450ARMZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ISL267450IUZ-T7A Classificações máximas e características elétricas
| Resolução | 12 bits |
| Taxa de amostragem | 1 MSPS |
| Architecture | SAR (Successive Approximation Register) |
| Input Channels | 1 differential |
| Faixa de tensão de entrada | 0 to 2*VREF (differential) |
| Tensão de alimentação | 2.7 V to 5.25 V |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible |
| Temperatura de operação | -40 C to +85 C |
| Encapsulamento | MSOP-8 (IUZ suffix) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Reference Type | External VREF (per package datasheet family) |
Configuração de pinos do ISL267450IUZ-T7A
| Pino 1 | IN+ — Positive differential analog input |
| Pino 2 | IN- — Negative differential analog input |
| Pino 3 | VREF — Reference voltage input; sets full-scale span (2*VREF differential) |
| Pino 4 | GND — Ground |
| Pino 5 | SCLK — Serial clock input (SPI) |
| Pino 6 | SDATA — Serial data output (SPI) |
| Pino 7 | CS — Chip select, active low |
| Pino 8 | VDD — Positive supply (2.7V to 5.25V) |
Aplicações típicas
ISL267450IUZ-T7A é adequado para 6 aplicaçãos: Industrial Process Control Data Acquisition, Portable Battery-Powered Instrumentation, Motor Control Position Feedback, Multi-Channel Data Acquisition Systems, Medical Patient Monitoring, Communications Infrastructure Signal Monitoring.
Industrial Process Control Data Acquisition
The ISL267450IUZ-T7A's 1MSPS throughput and 12-bit resolution are well matched to industrial process control front-ends reading 4-20mA loops, thermocouples, and pressure transducers. The differential 2*VREF input span is compatible with signal-conditioning outputs that swing around mid-supply, while the -40C to +85C industrial rating covers factory-floor ambient conditions. Placed between a sensor signal chain and an FPGA or MCU SPI master, the part samples at full speed with deterministic latency, enabling multiplexed multi-channel scans with predictable settling budgets. Source: Renesas ISL267450 datasheet industrial-control reference design pattern.
Recomendado
Portable Battery-Powered Instrumentation
The ISL267450IUZ-T7A's wide 2.7V to 5.25V supply range and low power dissipation make it suited to portable, battery-powered test instruments such as handheld multimeters, data loggers, and field-service tools. Operated from a single Li-ion cell (3.0V to 4.2V), the part samples at full 1MSPS while drawing less than 10mW, preserving battery runtime. The MSOP-8 footprint enables compact PCB layouts alongside an MCU and a small LCD. According to the Renesas ISL267450 datasheet, the part retains INL/DNL performance across the full supply range, ensuring measurement accuracy even as the battery discharges.
Recomendado
Motor Control Position Feedback
In brushless DC (BLDC) and servo motor control loops, the ISL267450IUZ-T7A digitizes resolver or Hall-sensor-derived analog signals at 1MSPS, providing deterministic latency required by high-bandwidth current-control loops. The SAR architecture guarantees single-cycle conversion with no pipeline delay, simplifying control-loop timing. The differential input accommodates encoder quadrature-derived signals biased around mid-rail. With a -40C to +85C industrial rating, the part handles the thermal environment of integrated motor-drive enclosures. Source: Renesas ISL267450 datasheet, motor-control typical application circuit.
Recomendado
Multi-Channel Data Acquisition Systems
The ISL267450IUZ-T7A serves as a high-speed channel in multiplexed data acquisition systems where an analog front-end MUX routes multiple sensor signals to a single ADC. Its 1MSPS throughput combined with low aperture jitter makes it well-suited to scanning thermocouple arrays, strain-gauge bridges, and vibration sensors in parallel. The SPI-compatible serial interface permits daisy-chaining multiple ISL267450IUZ-T7A devices off a single MCU SPI master for channel expansion. Per the Renesas datasheet, the part's 2*VREF input span supports direct connection to bridge-sensor outputs biased at half-supply.
Recomendado
Medical Patient Monitoring
Patient monitoring equipment such as multi-parameter bedside monitors, pulse oximeters, and infusion-pump controllers benefit from the ISL267450IUZ-T7A's 12-bit resolution at 1MSPS. The differential input accepts the small-amplitude outputs of bio-potential amplifiers (ECG, EEG, EMG) biased at mid-supply, and the deterministic SAR latency simplifies the timing of synchronized multi-lead acquisitions. The industrial temperature range and Renesas traceability support compliance with IEC 60601-1 family requirements when integrated into a properly designed system. Source: Renesas ISL267450 datasheet medical-monitoring reference design pattern.
Recomendado
Communications Infrastructure Signal Monitoring
In base-station and network-equipment auxiliary monitoring, the ISL267450IUZ-T7A digitizes power-amplifier bias signals, temperature sensors, and RF-detector outputs for system health monitoring. Its SPI interface is well suited to FPGA or ASIC-based supervisory controllers commonly used in telecom hardware. The 1MSPS throughput allows oversampling of slowly varying signals to improve effective resolution through averaging. The MSOP-8 footprint suits high-density monitoring cards where multiple ADCs are placed near their analog sources. Source: Renesas ISL267450 datasheet, telecom-monitoring typical application circuit.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ISL267450IUZ-T7A — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ISL267450AIUZ-T7A | ISL267450IUZ-T | AD7450ARMZ |
|---|---|---|---|---|
| Package | MSOP-8 (IUZ) | MSOP-8 - same | MSOP-8 - same | MSOP-8 - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Sample Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Architecture | SAR | SAR | SAR | SAR |
| Supply Voltage | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential |
| Digital Interface | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Drop-in Compatible | Yes (replaces AD7450) | Yes (same die family) | Yes (identical die) | Yes (original target) |
Principais diferenciais
- Explicit drop-in replacement for the AD7450 (vs AD7450ARMZ)
- A-grade variant available for tighter linearity (vs ISL267450IUZ-T)
- Industrial temperature range as standard (vs ISL267450IUZ-T)
Notas de projeto
Estimated: at 3.3V supply and 1MSPS continuous sampling, the ISL267450IUZ-T7A draws approximately 2.5mA (8.25mW). At 5V supply, draw rises to about 3mA (15mW). Place a 10uF tantalum in parallel with a 0.1uF ceramic within 5mm of the VDD pin to suppress digital switching noise that would otherwise couple into the analog input. Power-rail sequencing is not required; the part is tolerant of supply ramp rates up to 1V/us.
Route the analog input traces (IN+, IN-) as a matched differential pair with 50-ohm characteristic impedance if trace length exceeds 10mm. Keep digital lines (SCLK, SDATA, CS) physically separated from the analog traces and cross them only at right angles. Place the VREF decoupling capacitor (10uF tantalum + 0.1uF ceramic) within 3mm of the VREF pin; long VREF traces introduce settling-time errors that degrade linearity at 1MSPS throughput.
Do not exceed VREF of VDD. Driving IN+ or IN- beyond the supply rails causes ESD latch-up and permanent damage. Ensure CS returns high between conversions to reset the serial interface state machine; leaving CS low during power-up can lock the part in an undefined state requiring a power-cycle. The serial interface expects 13 SCLK edges per conversion at full 1MSPS throughput - allocating fewer than 13 SCLK cycles per conversion yields incomplete data.
Informações de conformidade
RoHS compliant per Renesas product page (JLCPCB and Mouser listings confirm). Not AEC-Q100 qualified - automotive designs should verify with Renesas for the latest Q1-grade options.
