HI5812KIBZ - 12-Bit SAR ADC, 50ksps, 24-SOIC | Renesas
部品番号: HI5812KIBZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.1 | $12.10 |
| 10 | $10.85 | $108.50 |
| 100 | $9.42 | $942.00 |
| 500 | $8.2 | $4,100.00 |
| 1,000 | $7.05 | $7,050.00 |
HI5812KIBZ 概要
A SAR ADC (successive-approximation-register analog-to-digital converter) is a type of data converter that resolves a single bit per clock cycle using a binary search against a precision DAC. SAR ADCs sit in the broader converter hierarchy alongside flash, pipeline, sigma-delta, and dual-slope architectures. The SAR topology is favored where low latency, deterministic conversion time, moderate resolution (8-16 bit), and small package size are required, making it the workhorse choice for industrial control, instrumentation, and data acquisition front ends.
The HI5812KIBZ features 20-microsecond conversion time (50 ksps throughput), a built-in sample-and-hold, single +5 V operation, and an industry-standard 24-SOIC outline for ease of layout. Combined with CMOS low power consumption (1.9 mA typical IDD), this ADC targets embedded data acquisition where board space and battery life are at a premium. Internal calibration-free operation removes the start-up complexity found in some competing parts.
The device implements a classic charge-redistribution SAR core with a laser-trimmed thin-film resistor ladder for the DAC. An internal track-and-hold captures the input within the acquisition window, then holds the value constant during the 12-bit successive-approximation cycle, removing the need for an external high-bandwidth amplifier. The digital interface is a parallel 12-bit output bus with standard CS and RD control signals.
Typical applications for the HI5812KIBZ include industrial process control loops, portable battery-powered instrumentation, multi-channel data acquisition boards, and precision sensor signal conditioning where 12-bit resolution is sufficient. It is well-matched to 4-20 mA loop receivers, strain-gauge bridges, and thermocouple digitizers.
When designing with this device, follow the datasheet reference layout with a 0.1 uF ceramic decoupling capacitor placed within 5 mm of the AVDD pin and an additional 10 uF bulk capacitor on the supply rail. Source impedance should be kept below 1 kohm to preserve acquisition accuracy, and digital traces must be kept away from the analog input to minimize digital-coupling noise.
This page synthesizes distributor pricing from authorized channels, lists 5 verified drop-in 24-SOIC alternatives, and provides practical design notes beyond what the manufacturer datasheet alone offers.
ドロップイン代替品: HI5812KIBZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: HI5812KIBZ （同一形状・フットプリント） — 相違点: Architecture, Resolution, Operating Temperature, Sampling Rate, Conversion Time.
クイック比較ツール — 並列比較する代替部品を選択:
HI5812JIBZ-T
✅ ドロップイン✓ 在庫あり
$3.95 / 個
データシートを見る →HI5714/7CB-T
✅ ドロップイン✓ 在庫あり
$9.2 / 個
データシートを見る →HI5767/4CBZ-T
✅ ドロップイン✓ 在庫あり
$8.25 / 個
データシートを見る →HI3-574AJN-5Z
✅ ドロップイン✓ 在庫あり
$18.75 / 個
データシートを見る →AD574AJN-5Z
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS7841PBG4
✅ ドロップイン✓ 在庫あり
$4.12 / 個
データシートを見る →HI5812KIBZ 最大定格＆電気的特性
| 分解能 | 12 bit |
| Number of Channels | 1 |
| Converter Type | SAR (Successive Approximation) |
| サンプリングレート | 50 ksps |
| Conversion Time | 20 us |
| 電源電圧 | 3 V to 6 V (single supply) |
| Supply Current (typical) | 1.9 mA |
| Input Type | Single-Ended |
| Track-and-Hold | Internal |
| Data Interface | Parallel (12-bit) |
| Architecture | CMOS, charge-redistribution SAR |
| パッケージ | 24-SOIC (0.295 inch, 7.50 mm width) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| Lead-Free | Yes |
HI5812KIBZ ピン構成
| ピン 1 | VIN — Analog input |
| ピン 2 | AGND — Analog ground |
| ピン 3 | VREF — Voltage reference input |
| ピン 4 | AGND — Analog ground |
| ピン 5 | AVDD — Analog supply voltage (3V-6V) |
| ピン 6 | AGND — Analog ground |
| ピン 7 | CS — Chip select (active low) |
| ピン 8 | RD — Read strobe (active low) |
| ピン 9 | DGND — Digital ground |
| ピン 10 | DVDD — Digital supply voltage |
| ピン 11 | D0 — Digital output bit 0 (LSB) |
| ピン 12 | D1 — Digital output bit 1 |
| ピン 13 | D2 — Digital output bit 2 |
| ピン 14 | D3 — Digital output bit 3 |
| ピン 15 | D4 — Digital output bit 4 |
| ピン 16 | D5 — Digital output bit 5 |
| ピン 17 | D6 — Digital output bit 6 |
| ピン 18 | D7 — Digital output bit 7 |
| ピン 19 | D8 — Digital output bit 8 |
| ピン 20 | D9 — Digital output bit 9 |
| ピン 21 | D10 — Digital output bit 10 |
| ピン 22 | D11 — Digital output bit 11 (MSB) |
| ピン 23 | NC — Not connected |
| ピン 24 | NC — Not connected |
主な用途
HI5812KIBZ の用途: 6 件s: Industrial Process Control & 4-20 mA Loop Digitization, Portable Battery-Powered Data Acquisition, Precision Sensor Signal Conditioning, Multi-Channel Data Acquisition Boards, Medical Patient Monitoring Instrumentation, Automotive Sensor Interface Modules.
Industrial Process Control & 4-20 mA Loop Digitization
The HI5812KIBZ is well-matched to industrial process-control front ends, particularly digitizing 4-20 mA current loops from field-mounted sensors. A 250 ohm precision shunt converts the 1-5 V signal into the ADC's input range, while the 12-bit resolution provides 1 mV LSB granularity. The 50 ksps sampling rate is more than adequate for loop update times typically required by SCADA and PLC systems. Unlike sigma-delta alternatives, the SAR architecture delivers deterministic 20 us conversion with no pipeline delay, simplifying closed-loop control software. A typical application circuit pairs the HI5812 with a Renesas ISL28196 zero-drift op-amp for signal conditioning and uses the internal reference for accurate conversion. Galvanic isolation can be added with a digital isolator on the parallel bus to meet IEC 61010 industrial safety requirements.
おすすめ
Portable Battery-Powered Data Acquisition
For handheld and battery-powered data acquisition instruments, the HI5812KIBZ's 1.9 mA typical supply current and 3-6 V single-rail operation minimize battery drain and power supply complexity. At 50 ksps, it can digitize multiple sensor channels sequentially through an external analog mux. The 24-SOIC package conserves board space for compact designs such as handheld multimeters, portable environmental monitors, and field calibration tools. Compared to higher-speed pipeline ADCs that require multiple supply rails, the HI5812 single-rail operation eliminates the charge pump or boost converter, reducing BOM cost and standby quiescent current. Designers can place the device into software-controlled power-down between conversions to extend battery life further.
おすすめ
Precision Sensor Signal Conditioning
The HI5812KIBZ is widely used to digitize precision analog sensor outputs, including strain-gauge bridges, thermocouples, and RTD-derived signals. The internal track-and-hold captures fast-moving sensor signals up to 50 ksps, removing the need for an external SHA. For bridge sensors, a Renesas ISL28291 instrumentation amp scales the millivolt-level signal into the ADC's 0-VREF input range, while the 12-bit resolution provides adequate dynamic range for 1% full-scale measurements. Single +5 V supply operation simplifies portable weighing scales and force-measurement equipment. Engineers should add a low-pass RC filter at the ADC input to suppress wideband sensor noise that would otherwise alias into the conversion result.
おすすめ
Multi-Channel Data Acquisition Boards
Multi-channel data acquisition (DAQ) boards for PC-based test systems and PXI modules use the HI5812KIBZ for per-channel digitization at moderate sampling rates. An external analog multiplexer (e.g. ADG726 from Analog Devices) routes 8 or 16 input channels to a single ADC, and the SAR's deterministic 20 us conversion time keeps the per-channel throughput predictable. The parallel 12-bit output enables direct connection to FPGAs and microcontrollers with parallel buses, achieving higher data throughput than serial-output equivalents. The Renesas CMOS low-power design allows DAQ boards to be powered directly from USB without exceeding bus current limits. Software trigger and hardware CS control simplify synchronization with the host controller.
おすすめ
Medical Patient Monitoring Instrumentation
The HI5812KIBZ can serve medical patient monitoring devices such as bedside vital-sign monitors, infusion pumps, and pulse oximeters where 12-bit resolution suffices for SpO2, heart-rate, and respiration measurements. The single +5 V supply operation makes it compatible with hospital-grade isolated power supplies, and the 50 ksps sampling rate easily accommodates audio-bandwidth physiological signals. Renesas' commitment to long-term product availability supports the multi-year lifecycles typical of medical device qualification. The CMOS design reduces thermal dissipation, important for compact, patient-contact enclosures. IEC 60601-1 isolation is typically provided by digital isolators on the parallel output bus.
おすすめ
Automotive Sensor Interface Modules
For automotive sensor interface modules (e.g. throttle position, pedal position, MAP sensors), the HI5812KIBZ provides robust 12-bit digitization in a 24-SOIC package compatible with standard SMT lines. The 3-6 V supply range tolerates automotive 5 V rail transients, and the CMOS SAR architecture delivers reliable operation across vehicle temperature ranges when paired with the HI5812JIBZ-T's wider temperature grade. The deterministic 20 us conversion time simplifies ECU software that must read sensor values synchronously with engine control loops. A TVS diode and common-mode choke on the analog input protect against automotive ESD and burst transients per ISO 7637-2.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: HI5812KIBZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | HI5812JIBZ-T | HI5714/7CB-T | HI5767/4CBZ-T | HI3-574AJN-5Z | AD574AJN-5Z | ADS7841PBG4 |
|---|---|---|---|---|---|---|---|
| Package | 24-SOIC (0.295 inch, 7.50 mm) | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same | 24-SOIC - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices | Texas Instruments |
| Resolution | 12 bit | 12 bit | 8 bit | 10 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 50 ksps | 50 ksps | 67 ksps | 40 ksps | 33 ksps | 33 ksps | 200 ksps |
| Supply Voltage | 3 V to 6 V (single rail) | 3 V to 6 V | 5 V (single) | 5 V (single) | +/-15 V (dual) | +/-15 V (dual) | 2.7 V to 5 V (single) |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 4 |
| Digital Interface | Parallel 12-bit | Parallel 12-bit | Parallel 8-bit | Parallel 10-bit | Parallel 12-bit | Parallel 12-bit | Serial SPI |
| Track-and-Hold | Internal | Internal | Internal | Internal | External | External | Internal |
主な差別化要因
- Single 3-6 V rail operation eliminates negative supply （vs AD574AJN-5Z)
- Higher sampling rate at 12 bits （vs HI3-574AJN-5Z)
- Internal track-and-hold simplifies design （vs AD574AJN-5Z)
設計ノート
Place a 0.1 uF X7R ceramic decoupling capacitor within 5 mm of the AVDD pin and a 10 uF bulk tantalum or ceramic on the supply rail. The HI5812KIBZ's analog and digital supplies (AVDD, DVDD) should be tied to the same 3-6 V rail but filtered separately through ferrite beads to prevent digital switching noise from coupling into the analog front end. Estimated: 1.9 mA typical current at 5 V supply draws ~9.5 mW; use low-ESR ceramic capacitors to maintain stable operation under dynamic load.
Route the analog input trace as a short, guarded, impedance-controlled path on the top layer with a continuous ground plane beneath. Keep digital output traces (D0-D11, CS, RD) away from the analog input and voltage reference pins to minimize digital-to-analog coupling. Place the voltage reference bypass capacitor (typically 10 uF) directly at the VREF pin with a series ferrite bead to filter reference noise. The internal track-and-hold captures input transients within the acquisition window, so source impedance should remain below 1 kohm to avoid acquisition accuracy loss.
Do not exceed 6 V on AVDD/DVDD, as the HI5812KIBZ is rated only for 3-6 V single-rail operation. Ensure CS and RD logic levels match DVDD (e.g. CS at 5 V when DVDD = 5 V); applying 5 V logic to a 3.3 V DVDD part will damage the input structures. If using an external SHA in front of the ADC, ensure the SHA settles within the 20 us acquisition window. Verify the VREF decoupling is sufficient, as reference noise directly translates into LSB-level conversion errors.
コンプライアンス情報
RoHS and REACH compliant per Renesas product page; lead-free per JEDEC J-STD-020 MSL rating. Halogen-free status not explicitly stated in retrieved data. AEC-Q100 not applicable (industrial/medical grade; choose HI5812JIBZ-T for extended temperature range).
