HI5812JIP - 12-Bit SAR ADC, 24-PDIP, Single 3-6V | Renesas
MPN: HI5812JIP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.55 | $2,275.00 |
| 1,000 | $3.95 | $3,950.00 |
HI5812JIP Overview
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Request AlternativesHI5812JIP Maximum Ratings & Electrical Characteristics
| Resolution | 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 |
| Supply Current | 1.9 mA typical at 5 V |
| Digital Interface | Parallel output |
| Analog Input Range | 0 V to VREF (unipolar, single-ended) |
| Reference Voltage | External VREF input |
| Operating Temperature | 0 °C to +70 °C (JIP / commercial) |
| Package | 24-pin PDIP (Plastic DIP, 600 mil) |
| Mounting Type | Through-Hole (THT) |
| Architecture | CMOS successive approximation |
| Track-and-Hold | Internal |
HI5812JIP Pin Configuration
| Pin 1 | VIN+ — Analog input (non-inverting) |
| Pin 2 | AGND — Analog ground |
| Pin 3 | VREF — External reference voltage input |
| Pin 4 | AGND — Analog ground |
| Pin 5 | VDD — +5 V supply |
| Pin 6 | DGND — Digital ground |
| Pin 7 | DOUT_LSB (D0) — Parallel data output bit 0 (LSB) |
| Pin 8 | DOUT_D1 — Parallel data output bit 1 |
| Pin 9 | DOUT_D2 — Parallel data output bit 2 |
| Pin 10 | DOUT_D3 — Parallel data output bit 3 |
| Pin 11 | DOUT_D4 — Parallel data output bit 4 |
| Pin 12 | DOUT_D5 — Parallel data output bit 5 |
| Pin 13 | DOUT_D6 — Parallel data output bit 6 |
| Pin 14 | DOUT_D7 — Parallel data output bit 7 |
| Pin 15 | DOUT_D8 — Parallel data output bit 8 |
| Pin 16 | DOUT_D9 — Parallel data output bit 9 |
| Pin 17 | DOUT_D10 — Parallel data output bit 10 |
| Pin 18 | DOUT_MSB (D11) — Parallel data output bit 11 (MSB) |
| Pin 19 | !EOC / BUSY — End-of-conversion / busy status |
| Pin 20 | !CS — Chip select (active low) |
| Pin 21 | !RD — Read strobe (active low) |
| Pin 22 | CONVST — Conversion start input |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | VDD — +5 V supply |
Typical Applications
HI5812JIP is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for HI5812JIP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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) |
Key Differentiators
- Internal track-and-hold eliminates external buffer requirement (vs AD574AJN)
- Single 3-6 V supply operation (vs AD574AJN)
- Same die available in SOIC-24 for production transition (vs HI5812JIBZ-T)
- Through-hole PDIP simplifies prototyping and field service (vs ADS7822PBG4 (PDIP-8))
Design Notes
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).
Compliance Information
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.
