ISL26310FBZ-T7A - 12-bit 125kSPS SAR ADC, 1-Ch, 8-SOIC | Renesas
MPN: ISL26310FBZ-T7A ✓ Hoạt độngISL26310FBZ-T7A Tóm tắt
The ISL26310FBZ-T7A is a member of the ISL2631x SAR ADC family which includes 1/2/4/8-channel single-ended and 1/2/4-channel differential input options. An SAR ADC is a sampling converter that uses a binary-searched capacitor DAC against the input voltage, producing an inherently low-latency digital conversion. It belongs to the broader signal-chain family: ADC -> data converter -> analog front-end -> data acquisition IC -> signal-chain component -> semiconductor. The bipolar-CMOS process gives the part low power consumption while preserving high DC accuracy and excellent linearity over temperature.
Key features include 12-bit no-missing-codes performance, ±1 LSB INL/DNL typical, a low 5 mW power dissipation at 125 kSPS with 5 V supplies, and hardware/software shutdown that drops quiescent current to a few hundred nanoamperes. An internal input multiplexer (on multi-channel variants) plus a combination buffer amplifier reduces the need for external signal-conditioning, lowering the analog front-end bill of materials in instrumentation and process-control boards.
Typical applications are industrial process control loops, multi-channel PLC analog input modules, portable/battery-powered instrumentation, and data-acquisition (DAQ) front ends that require ±10 V input ranges, ±5 V dual supplies, and a small serial-only footprint. Two of those industries, factory automation and mobile instrumentation, depend heavily on the part's robustness over temperature. When designing with this device, choose an external reference and op-amp front end sized to the source impedance to keep conversion error below 1 LSB at the full 125 kSPS data rate.
Bộ thay thế dễ dàng lắp đặt cho ISL26310FBZ-T7A — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ISL26310FBZ-T7A (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Input Type, Interface, Architecture.
ISL26310FBZ-T
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ISL26310FBZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ISL26311FBZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ISL26312FBZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ISL26310FBZ-T7A Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bits |
| Architecture | SAR (Successive Approximation Register) |
| Tỷ lệ lấy mẫu | 125 kSPS |
| Number of Channels | 1 (single-ended / differential) |
| Input Range | ±10 V bipolar (with ±5 V supplies) or 0-12 V unipolar |
| Supply Voltage - Analog | ±5 V or +5 V (dual/supply, with optional +12 V unipolar input) |
| Power Dissipation | 5 mW at 125 kSPS typical |
| INL (Integral Non-Linearity) | ±1 LSB typical |
| DNL (Differential Non-Linearity) | ±1 LSB (no missing codes) |
| Giao diện | SPI / QSPI / MICROWIRE-compatible serial |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C |
| Hộp | 8-pin SOIC (narrow, tape-and-reel -T7A packing) |
| Kiểu lắp đặt | Surface Mount |
| Lead Free / RoHS | Lead-free, RoHS-compliant (per package suffix FBZ) |
Cấu hình chân ISL26310FBZ-T7A
| Chân 1 | IN+ — Positive analog input (single-ended or differential) |
| Chân 2 | GND — Ground |
| Chân 3 | CS — Chip-select (active low) |
| Chân 4 | SCLK — Serial-clock input |
| Chân 5 | DOUT/SDOUT — Serial data output (SPI) |
| Chân 6 | VREF/REFEN — External reference / reference enable |
| Chân 7 | VDD — +5 V analog supply (also accepts dual ±5 V) |
| Chân 8 | VSS — Negative supply (e.g., -5 V when used in bipolar mode) |
Ứng dụng tiêu biểu
ISL26310FBZ-T7A phù hợp cho 8 Áp dụngs: Industrial Process Control (PLC Analog Inputs), Data-Acquisition (DAQ) Front Ends, Portable / Battery-Powered Instrumentation, Sensor Signal-Conditioning Front Ends, Medical/Patient Monitoring Systems, Audio Equipment (Slow-Control Monitoring), Automotive Sensor Interfaces (Non-AEC-Q), Industrial Test & Measurement.
Industrial Process Control (PLC Analog Inputs)
The ISL26310FBZ-T7A's ±10 V bipolar input range and ±1 LSB INL typical make it a strong fit for PLC analog input modules that read 4-20 mA / 0-10 V process signals after external scaling. At 125 kSPS with SAR latency under one conversion cycle, the device can multiplex through 4-16 channels with deterministic phase delay. Its 5 mW power budget lets designers place many channels on a single backplane without thermal concerns, and the SPI/QSPI/MICROWIRE-compatible serial interface minimizes MCU pin count on each analog card.
Được đề xuất
Data-Acquisition (DAQ) Front Ends
The ISL26310FBZ-T7A is well suited as the channel ADC in a multi-slot DAQ chassis where each slot needs one bipolar ±10 V input with up to 12-bit DC accuracy. The 125 kSPS throughput lets a single ADC service both DC measurement and low-bandwidth AC sampling (audio, vibration) without dropping samples; the no-missing-codes 12-bit performance preserves measurement integrity across sweep ranges. SPI-compatible interface allows FPGA / DSP host controllers to share one bus across multiple ISL26310FBZ-T7A slaves for synchronized acquisition.
Được đề xuất
Portable / Battery-Powered Instrumentation
The ISL26310FBZ-T7A is battery-friendly because its 5 mW typical power dissipation at 125 kSPS allows long runtime on a single 5 V rail. The hardware/software shutdown feature drops quiescent current to a few hundred nanoamperes, so battery-powered data loggers can wake the ADC only during measurement. Its SOIC-8 footprint occupies a tiny board area - important for hand-held oscilloscope probes, environmental monitors, and field-tunable transducer readers in narrow enclosures.
Được đề xuất
Sensor Signal-Conditioning Front Ends
The ISL26310FBZ-T7A's bipolar ±10 V input lets bridge, RTD, and thermocouple amplifiers be scaled directly into the ADC's range without an additional instrumentation amplifier. Its ±1 LSB INL contributes less than 0.025 % of full-scale error, comfortably accommodating single-point calibration of strain-gauge and weigh-scale subsystems. The wide operating temperature range of -40 °C to +85 °C supports outdoor and in-cabinet industrial sensor conditioning for SCADA nodes.
Được đề xuất
Medical/Patient Monitoring Systems
The ISL26310FBZ-T7A is a good fit for low-bandwidth medical front-end digitization where 12-bit resolution and 125 kSPS are sufficient, e.g., bedside vital-sign amplifiers or other low-frequency biopotential channels. Its bipolar ±10 V input accommodates the large dynamic range of ECG / EMG pre-amp outputs without saturating, and the SAR's low-latency conversion supports real-time waveform display. Designers must confirm medical-safety isolation and IEC 60601 compliance at the system level rather than relying on the ADC alone.
Được đề xuất
Audio Equipment (Slow-Control Monitoring)
The ISL26310FBZ-T7A can digitize slow-control levels in professional audio gear - power-supply rails, temperature sensors, gain settings, or DC calibration tones - where its 12-bit resolution is more than enough. At 125 kSPS it cannot compete with audio-band ADCs above 10 kSPS, but it plays a complementary role in mixed-signal audio products. Pair it with a dedicated audio-band ADC such as ADS901E/1K for the audio path; the ISL26310FBZ-T7A then handles house-keeping channels.
Được đề xuất
Automotive Sensor Interfaces (Non-AEC-Q)
The ISL26310FBZ-T7A is generally suitable for non-AEC-Q automotive subsystems such as HVAC controllers, infotainment accessory inputs, and bench-tuning fixtures where -40 °C to +85 °C is acceptable. For AEC-Q100 grade-1 applications, look elsewhere; the part is not AEC-qualified. Verified Web Data did not list an automotive-grade sibling for the ISL2631x family, so this is an off-label use only.
Được đề xuất
Industrial Test & Measurement
In bench-type industrial test and measurement gear (multimeters, benchtop data loggers, insulation testers), the ISL26310FBZ-T7A digitizes wide-range DC inputs through external resistor dividers or shunt networks. Its 12-bit no-missing-codes and ±1 LSB INL typical let a single ADC cover ranges from tens of millivolts to ±10 V after scaling. The 8-pin SOIC and SPI serial interface make it easy to PCB-mount on test probe front ends without drag on a tight BOM line.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ISL26310FBZ-T7A — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ISL26310FBZ-T | ISL26310FBZ | ISL26311FBZ | ISL26312FBZ |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | SOIC-8 | SOIC-8 (same) | SOIC-8 (same) | SOIC-8 (same) | SOIC-8 (same) |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Sampling Rate | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS |
| Number of Channels | 1 (SE / Diff) | 1 (SE / Diff) | 1 (SE / Diff) | 2 (SE) | 4 (SE / 2 Diff) |
| Input Range | ±10 V bipolar / 0-12 V unipolar | ±10 V bipolar / 0-12 V unipolar | ±10 V bipolar / 0-12 V unipolar | ±10 V bipolar / 0-12 V unipolar | ±10 V bipolar / 0-12 V unipolar |
| Interface | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE |
| Architecture | SAR | SAR | SAR | SAR | SAR |
Bảo phân biệt quan trọng
- Native ±10 V bipolar input in a single 8-pin SOIC (vsTI ADS7818 / ADS7822)
- True SAR architecture with sub-cycle latency (vsTI ADS1110 / ADS1115)
- 1/2/4-channel pin-compatible family for firmware-driven multiplexing (vsISL26313FBZ / ISL26315FBZ)
Ghi chú thiết kế
Power the ISL26310FBZ-T7A from ±5 V analog supplies when using the ±10 V bipolar input range; for 0-12 V unipolar inputs, power from +5 V analog and +12 V analog supplies only. Decouple both supplies with 10 µF / 0.1 µF ceramic + bulk networks placed as close as practical to the VDD/VSS pins, because the SAR's charge-redistribution DAC draws transient current every conversion cycle and noisy rails will degrade AC and DC performance.
Keep the analog-input traces and the digital SCLK/CS/DOUT traces on opposite sides of the SOIC-8 to break common-mode capacitive coupling. Place the external reference capacitor (typically 4.7 µF to 10 µF) right at the VREF pin and ground-reference it with a star-ground pattern; this keeps reference-volt offset below 1 LSB even at 125 kSPS. Avoid routing digital lines directly under the input trace on the underside of the SOIC-8 footprint - the ground paddle between the pins increases mutual capacitance.
Do not exceed the absolute-maximum analog input voltage of ±12 V at the IN+ pin, even during transient overvoltage, because the input ESD structure latches at higher voltages. Do not hold CS low continuously; always toggle CS at the start of every conversion to avoid accumulator drift. Do not operate ISL26310FBZ-T7A outside its -40 °C to +85 °C industrial range without re-characterizing the system against AEC-Q targets, as this part is not automotive-qualified. Estimated: with a 4.096 V external reference, 1 LSB equals 1.0 mV (4.096 V / 4096); at ±10 V full-scale you cannot resolve below 2.44 mV, so pay attention to gain-error budgets at the front end.
Use a SOIC-8 PCB pad pattern optimized for SOIC pin spacing of 0.05 inch (1.27 mm) and a SOIC body width of 0.150 inch (3.8 mm). Maintain a 0.030-inch (0.76 mm) pad-to-pad aperture and route both analog and digital supply digital traces through their own power net after ferrite-bead coupling. Populate at least one 0.1 µF X7R bypass per supply within 0.1 inch (2.54 mm) of the SOIC-8 pins and one 10 µF tantalum / polymer bulk capacitor at the analog section ground
Thông tin tuân thủ
Lead-free / RoHS compliance inferred from FBZ suffix. Renesas published family datasheet does not enumerate REACH / AEC-Q100 / halogen-free status; refer to manufacturer materials. ISL26310FBZ-T7A is not AEC-Q100 qualified.
