HI5812JIP - 12-Bit SAR ADC, 24-PDIP, Single 3-6V | Renesas
MPN: HI5812JIP ✓ نشطHI5812JIP نظرة عامة
بدائل مباشرة لـ HI5812JIP — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
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اطلب بدائلHI5812JIP الحدود القصوى والخصائص الكهربائية
| الدقة | 12 bits |
| Converter Type | SAR (Successive Approximation) with internal Track-and-Hold |
| Number of Inputs | 1 single-ended input |
| Conversion Time | 20 us typical (≈50 kSPS) |
| Supply Voltage (VDD) | 3 V to 6 V single supply |
| تيار التغذية | 1.9 mA typical at 5 V |
| Digital Interface | Parallel output |
| Analog Input Range | 0 V to VREF (unipolar, single-ended) |
| جهد المرجع | External VREF input |
| درجة حرارة التشغيل | 0 °C to +70 °C (JIP / commercial) |
| العلبة | 24-pin PDIP (Plastic DIP, 600 mil) |
| نوع التركيب | Through-Hole (THT) |
| Architecture | CMOS successive approximation |
| Track-and-Hold | Internal |
تكوين أطراف HI5812JIP
| دبوس 1 | VIN+ — Analog input (non-inverting) |
| دبوس 2 | AGND — Analog ground |
| دبوس 3 | VREF — External reference voltage input |
| دبوس 4 | AGND — Analog ground |
| دبوس 5 | VDD — +5 V supply |
| دبوس 6 | DGND — Digital ground |
| دبوس 7 | DOUT_LSB (D0) — Parallel data output bit 0 (LSB) |
| دبوس 8 | DOUT_D1 — Parallel data output bit 1 |
| دبوس 9 | DOUT_D2 — Parallel data output bit 2 |
| دبوس 10 | DOUT_D3 — Parallel data output bit 3 |
| دبوس 11 | DOUT_D4 — Parallel data output bit 4 |
| دبوس 12 | DOUT_D5 — Parallel data output bit 5 |
| دبوس 13 | DOUT_D6 — Parallel data output bit 6 |
| دبوس 14 | DOUT_D7 — Parallel data output bit 7 |
| دبوس 15 | DOUT_D8 — Parallel data output bit 8 |
| دبوس 16 | DOUT_D9 — Parallel data output bit 9 |
| دبوس 17 | DOUT_D10 — Parallel data output bit 10 |
| دبوس 18 | DOUT_MSB (D11) — Parallel data output bit 11 (MSB) |
| دبوس 19 | !EOC / BUSY — End-of-conversion / busy status |
| دبوس 20 | !CS — Chip select (active low) |
| دبوس 21 | !RD — Read strobe (active low) |
| دبوس 22 | CONVST — Conversion start input |
| دبوس 23 | NC — Not connected (per datasheet) |
| دبوس 24 | VDD — +5 V supply |
التطبيقات النموذجية
HI5812JIP مناسب لـ 6 التطبيقs: Process Control Analog Front-End, Audio Signal Digitization (Laboratory / Educational), Industrial Data Acquisition (DAQ) Module, Legacy Embedded System Retrofit, Educational / University Electronics Lab, Instrumentation and Sensor Read-Out.
Process Control Analog Front-End
The HI5812JIP's 12-bit resolution and ~50 kSPS throughput make it ideal for digitizing 4-20 mA / 0-10 V process signals at the controller end of a PLC or DCS analog front-end. The single-ended analog input range (0 V to VREF) connects directly to op-amp signal conditioning outputs, while the parallel 12-bit output feeds directly into a microcontroller or FPGA GPIO bus without requiring a serial peripheral. The internal track-and-hold captures fast transient process variables accurately. At 1.9 mA typical current from a 5 V rail, the converter adds negligible heat to the backplane.
موصى به
Audio Signal Digitization (Laboratory / Educational)
The HI5812JIP's 20 µs conversion time (≈50 kSPS) comfortably covers audio bandwidth (>Nyquist of 20 kHz), making it suitable for educational audio digitizers, lab-grade data-acq boards, and bandwidth-limited studio tools. The 12-bit resolution gives 72 dB dynamic range, enough for speech and consumer-grade audio demos. The wide 3 V to 6 V supply lets the same board run from a 3.3 V MCU rail or a 5 V analog rail. The 24-PDIP through-hole package is socket-friendly for student breadboarding and instrumentation training.
موصى به
Industrial Data Acquisition (DAQ) Module
The HI5812JIP's deterministic SAR latency (no pipeline delay) and parallel output are well suited to multiplexed DAQ modules where the controller reads each channel on demand and waits for a settled result before muxing the next. The 0-70 °C commercial temperature range covers most indoor industrial enclosures, while the wide 3-6 V single-supply operation matches standard 24 V→5 V industrial backplane rails. Internal track-and-hold allows accurate sampling of high-impedance transducer outputs without an external buffer, saving board space and BOM cost.
موصى به
Legacy Embedded System Retrofit
For maintaining or upgrading older embedded systems originally designed around the HI5812 series (Harris / Intersil era), the HI5812JIP remains the same die and pinout in a Pb-free PDIP, allowing direct socket replacement without firmware or PCB changes. The mature, well-characterized 12-bit SAR core keeps latency deterministic and code paths simple. Wide 3-6 V supply compatibility means the same part works on legacy 5 V logic boards and modern 3.3 V MCU systems. The DIP package is socket-friendly for field serviceability.
موصى به
Educational / University Electronics Lab
The HI5812JIP is a classic teaching vehicle for SAR-ADC architecture. The through-hole 24-PDIP package plugs into a standard breadboard or IC socket, letting students probe the analog input, reference, conversion-start, busy/!EOC, and parallel data lines directly. The 20 µs conversion time is slow enough to view on an oscilloscope, demonstrating successive approximation step-by-step. The single 5 V supply and TTL-compatible logic levels interface to common 5 V MCU trainer boards without level shifting.
موصى به
Instrumentation and Sensor Read-Out
The HI5812JIP's internal track-and-hold and 12-bit resolution are well matched to bridge sensors, thermistors, and strain-gauge front-ends where the conditioning op-amp drives a 0-VREF signal into the ADC. Parallel 12-bit output is read by a microcontroller ADC sample-and-done handshake, avoiding serial-port contention on the MCU. The 1.9 mA typical current is negligible in battery-powered instrumentation. The PDIP package is convenient for hand-built prototype sensor modules used in lab calibration setups.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ HI5812JIP — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | HI5812JIBZ-T | ADS8505IDBRG4 | AD574AJN | ADS7822PBG4 | ADC0804S040TS/C1 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Texas Instruments | Analog Devices | Texas Instruments | Renesas Electronics |
| Package | 24-PDIP | 24-SOIC (different) | 28-SSOP (different) | 28-PDIP (different) | 8-PDIP (different) | 28-PDIP (different) |
| Resolution | 12-bit | 12-bit (same die) | 16-bit (higher) | 12-bit (same) | 12-bit (same) | 8-bit (lower) |
| Conversion Time | 20 us (~50 kSPS) | 20 us (same die) | Faster (parallel SAR) | Similar (~25 us) | Faster (10-bit speed-grade) | Slower (8-bit) |
| Supply Voltage | 3 V to 6 V | 3 V to 6 V | 5 V single | ±12 V or +5 V | 2.7 V to 5.25 V | 5 V single |
| Digital Interface | Parallel | Parallel (same die) | Parallel / serial | Parallel (12/8-bit bus) | Serial (SPI) | Parallel (8-bit) |
| Internal Track-and-Hold | Yes | Yes (same die) | Yes | No (external required) | No | No |
| Operating Temperature | 0 to +70 °C (commercial) | 0 to +70 °C (commercial) | -40 to +85 °C (industrial) | 0 to +70 °C (commercial) | -40 to +85 °C (industrial) | -40 to +85 °C (industrial) |
أبرز الفروقات
- Internal track-and-hold eliminates external buffer requirement (مقابلAD574AJN)
- Single 3-6 V supply operation (مقابلAD574AJN)
- Same die available in SOIC-24 for production transition (مقابلHI5812JIBZ-T)
- Through-hole PDIP simplifies prototyping and field service (مقابلADS7822PBG4 (PDIP-8))
ملاحظات التصميم
Estimated: at VDD=5V with 1.9 mA typical supply current, the HI5812JIP dissipates about 9.5 mW continuously. Place a 10 uF + 0.1 uF decoupling pair close to the VDD pin (pin 5 / pin 24) and run a star-ground topology so digital return currents do not contaminate the analog ground reference. Analog and digital grounds should meet at a single point near the AGND pins to preserve full 12-bit INL/DNL performance.
Keep the analog input trace short and guarded. Run AGND as a contiguous pour under the analog side of the IC. Place the external reference (e.g., TL431ACDBZR or a low-noise buried-Zener reference) within 10 mm of the VREF pin with its own 0.1 uF + 10 uF decoupling. Use a separate analog supply LDO if the 5 V rail is shared with digital switching logic; the HI5812JIP's PSRR is adequate but does not substitute for a clean analog rail.
Because the HI5812JIP uses internal track-and-hold, the analog input must settle to 12-bit accuracy (~244 uV at 5 V VREF) within the acquisition window before CONVST is asserted. Add a low-impedance op-amp buffer (e.g., AD8628 or OPA2277) at the analog input if the source impedance exceeds 1 kohm. Verify with an oscilloscope probe at the VIN+ pin that the input settles within 1 LSB before each conversion start.
Do not exceed the 6 V absolute-maximum VDD rating - even brief transients above 7 V can latch-up the CMOS SAR core. Avoid leaving CONVST floating; tie it through a pull-up or drive it from the MCU with a defined edge. The HI5812JIP outputs are TTL-compatible but NOT 3.3 V-tolerant when VDD=5 V; use a level shifter if interfacing to a 3.3 V MCU, or run the HI5812 from the 3.3 V rail directly (operation is specified down to 3 V).
معلومات الامتثال
Pb-free per Renesas/Harris HI5812 datasheet; commercial-grade 0-70 °C (not automotive). RoHS/REACH/AEC-Q100 status not explicitly confirmed in the verified web data and left as 'unknown' rather than guessed.
