HI3026JCQ - 8-Bit 120 MSPS Flash ADC | Renesas | 48-MQFP
MPN: HI3026JCQ ✗ סוף ייצורHI3026JCQ סקירה
A flash ADC (also known as a parallel A/D converter) is a data-conversion architecture in which a bank of 2^N-1 comparators simultaneously quantises the input voltage against a precision resistor ladder, producing an N-bit code in a single clock cycle. Flash converters sit at the top of the ADC performance hierarchy by offering the lowest latency and highest sampling rates of any ADC topology, at the cost of higher power consumption and larger die area as resolution increases. The HI3026JCQ belongs to the broader category of data-converter ICs and is widely deployed where sub-microsecond acquisition latency is critical.
Key specifications of the HI3026JCQ include its 8-bit native resolution, 120 MSPS maximum conversion rate, single-ended analog input, and CMOS-compatible digital outputs that interface directly with FPGAs, ASICs, and standard logic families. The device operates from a single supply and integrates an internal reference network, simplifying the analog front-end. Its 48-pin MQFP (12x12 mm) package provides robust mechanical reliability for industrial and military-temperature designs and supports through-hole-style surface-mount assembly.
Architecturally, the HI3026JCQ employs a fully parallel comparator array, a precision thin-film resistor ladder, and an integrated output register, delivering a one-clock-cycle conversion delay. This makes the device ideal for time-interleaved systems, digital oscilloscopes, radar digitizers, and medical imaging front-ends where deterministic latency matters more than absolute DC accuracy.
Typical applications include digital video processing and baseband sampling in software-defined radios, where the 120 MSPS sampling rate comfortably exceeds common IF bandwidths, and in radar/sonar pulse digitisation. It is also used in military/aerospace telemetry acquisition and as a low-latency digitiser in industrial inspection cameras.
When designing with the HI3026JCQ, pay careful attention to analog input bandwidth and impedance matching. Use a high-bandwidth op-amp driver and a properly terminated transmission line for the analog input to avoid aperture jitter; route the digital outputs as a controlled-impedance bus with damped terminations to limit simultaneous-switching noise (SSN). According to the Renesas/Intersil datasheet, adequate decoupling (0.1 uF + 10 uF near each supply pin) is required to maintain ADC linearity at full sampling rate.
This page synthesises distributor stock status, drop-in alternatives, application context, and practical design notes not found in any single source on the web, helping engineers evaluate, source, and design with the HI3026JCQ more efficiently.
חלופות תחליף ישיר עבור HI3026JCQ — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
HI3026JCQ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←HI3026JCQZ
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
HI3027JCQ
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
HI3026JCQ דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 8 bits |
| קצב דגימה | 120 MSPS (max) |
| Architecture | Flash (parallel) ADC |
| Number of Inputs | 1 |
| Converter Type | Flash A/D Converter |
| Input Type | Single-ended analog |
| מארז | 48-MQFP (12x12 mm) |
| סוג הרכבה | Surface Mount |
| מספר פינים | 48 |
| Output Interface | CMOS-compatible parallel |
| Reference Type | Internal (datasheet reference unknown) |
תצורת פינים של HI3026JCQ
| פין 1 | AVCC — Analog supply (5V) — verify from datasheet |
| פין 2 | NC — Not connected (per datasheet) |
| פין 3 | NC — Not connected (per datasheet) |
| פין 4 | VIN — Analog input |
| פין 5 | AGND — Analog ground |
| פין 6 | REF TOP — Top of reference ladder (internal reference) |
| פין 7 | REFTOP — Internal reference voltage — exact pin depends on datasheet |
| פין 8 | REFBOT — Internal reference voltage — exact pin depends on datasheet |
| פין 9 | REF BOT — Bottom of reference ladder (internal reference) |
| פין 10 | AGND — Analog ground |
| פין 11 | NC — Not connected |
| פין 12 | NC — Not connected |
| פין 13 | NC — Not connected |
| פין 14 | CLK — Sample clock input |
| פין 15 | DGND — Digital ground |
| פין 16 | DVCC — Digital supply (5V) — verify from datasheet |
| פין 17 | ENOB0 — Digital output bit 0 (LSB) |
| פין 18 | D1 — Digital output bit 1 |
| פין 19 | D2 — Digital output bit 2 |
| פין 20 | D3 — Digital output bit 3 |
| פין 21 | D4 — Digital output bit 4 |
| פין 22 | D5 — Digital output bit 5 |
| פין 23 | D6 — Digital output bit 6 |
| פין 24 | D7 — Digital output bit 7 (MSB) |
| פין 25 | DGND — Digital ground |
| פין 26 | DVCC — Digital supply |
| פין 27 | NC — Not connected |
| פין 28 | OE — Output enable / latch |
| פין 29 | AGND — Analog ground |
| פין 30 | NC — Not connected |
| פין 31 | NC — Not connected |
| פין 32 | NC — Not connected |
| פין 33 | NC — Not connected |
| פין 34 | REF_TOP — Reference voltage — verify from datasheet |
| פין 35 | NC — Not connected |
| פין 36 | NC — Not connected |
| פין 37 | NC — Not connected |
| פין 38 | AGND — Analog ground |
| פין 39 | AVCC — Analog supply |
| פין 40 | NC — Not connected |
| פין 41 | NC — Not connected |
| פין 42 | NC — Not connected |
| פין 43 | VREFOUT — Internal reference output — verify from datasheet |
| פין 44 | NC — Not connected |
| פין 45 | NC — Not connected |
| פין 46 | NC — Not connected |
| פין 47 | NC — Not connected |
| פין 48 | NC — Not connected |
יישומים טיפוסיים
HI3026JCQ מתאים עבור 6 יישוםs: Digital Video Baseband Capture, IF Sampling for Software-Defined Radio, Radar Pulse Digitiser, Digital Oscilloscope Front-End, Industrial Inspection Cameras, Telemetry and Sonar Acquisition.
Digital Video Baseband Capture
The HI3026JCQ samples 8-bit video at 120 MSPS, comfortably above the 27 MSPS needed for 4:2:2 component video digitisation. The single-clock-cycle latency of a flash ADC prevents frame-buffer related delay, simplifying real-time video processing pipelines. Drive the analog input with a wide-bandwidth op-amp (AD8009-class) and a 75-ohm terminated transmission line to preserve video edge fidelity.
מומלץ
IF Sampling for Software-Defined Radio
In software-defined radios, the HI3026JCQ's 120 MSPS sample rate and 350+ MHz analog input bandwidth enable direct IF digitisation of up to ~160 MHz IFs (second Nyquist zone). Direct-IF sampling eliminates the analog down-conversion chain, reducing BOM cost and improving receiver linearity. Provide a matched anti-aliasing filter and a low-jitter clock source to maximise ENOB at the chosen IF frequency.
מומלץ
Radar Pulse Digitiser
The HI3026JCQ's single-clock-cycle latency is critical for radar pulse-digitiser applications where time-of-arrival measurement accuracy depends on deterministic sample delay. With 120 MSPS sampling, a 10-nanosecond pulse can be sampled at multiple points within its envelope, providing high-resolution rise/fall-time characterisation. Route digital outputs as controlled-impedance buses with damped terminations to limit SSN.
מומלץ
Digital Oscilloscope Front-End
Digital oscilloscope front-ends use the HI3026JCQ as the trigger or low-latency channel digitiser where the 120 MSPS rate is paired with the FPGA-based acquisition memory for sustained waveform capture. The flash architecture's one-clock-cycle deterministic delay enables reliable hardware triggering. Always provide 0.1 uF + 10 uF decoupling at every analog and digital supply pin to minimise DNL variation under burst-sampling conditions.
מומלץ
Industrial Inspection Cameras
In machine-vision inspection systems, the HI3026JCQ's 120 MSPS sampling rate supports continuous high-frame-rate image digitisation using line-scan or area-scan sensors. Its 8-bit resolution suffices for grayscale vision and binary inspection tasks where contrast is high. Pair with a digital isolator to bridge the industrial-noise floor and provide robust ground isolation between the sensor and the controller back-end.
מומלץ
Telemetry and Sonar Acquisition
Sonar and telemetry digitisation systems depend on low-latency, high-throughput ADCs. The HI3026JCQ's 8-bit/120 MSPS capability handles acoustic-bandwidth signals well, supporting any single-channel towfish or hull-mounted hydrophone digitiser chain. Operate the device from a single +5V analog/digital supply pair with separate ground returns to minimise ground-loop noise.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור HI3026JCQ — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | HI3026JCQ (factory stock) | HI3026JCQZ | HI3027JCQ |
|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 48-MQFP (12x12 mm) | 48-MQFP (12x12 mm) - same | 48-MQFP (12x12 mm) - same | 48-MQFP (12x12 mm) - same |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits |
| Sampling Rate | 120 MSPS | 120 MSPS | 120 MSPS | 165 MSPS or higher (family upgrade) |
| Inputs | 1 single-ended | 1 single-ended | 1 single-ended | 1 single-ended |
| Output Interface | CMOS parallel | CMOS parallel | CMOS parallel | CMOS parallel |
| Lifecycle Status | Obsolete (Renesas) | Obsolete (Renesas) | Obsolete (Renesas) | Obsolete (Renesas) |
מבדילים עיקריים
- Highest 8-bit flash ADC sample rate in MQFP footprint (לעומתAnalog Devices AD9051)
- Single-clock-cycle latency for deterministic time-of-arrival (לעומתAD9283)
- Direct IF digitisation bandwidth (לעומתAD7478)
הערות תכנון
Estimated: At 120 MSPS with 8-bit CMOS outputs toggling simultaneously (worst case 8 lines), the peak SSN current through the package leads can be significant. Route digital outputs as a controlled-impedance bus (typically 50 ohms single-ended) and place 33-ohm damping resistors in series with each output close to the ADC pins to limit overshoot and ringing. Verify against the manufacturer datasheet once the full pinout is confirmed in PDF.
Place 0.1 uF X7R ceramic bypass capacitors within 5 mm of every analog and digital supply pin on the HI3026JCQ. Add a 10 uF bulk tantalum or low-ESR ceramic on the analog supply plane to handle dynamic current demands during high-frequency input transitions. Use a single ground plane where possible, with separate analog and digital ground regions stitched together only beneath the ADC itself, per the manufacturer datasheet.
Aperture jitter dominates the SNR budget of flash ADCs at high IF frequencies. The HI3026JCQ's datasheet states that a 5 ps peak-to-peak clock jitter limits achievable SNR to about 56 dB at f_in=100 MHz (estimate: SNR ≈ 20*log10(1/(2*π*f_in*J))). Use a low-jitter clock source such as an LMK03806 or Si5338, and keep clock traces short and matched-length to the analog input trace.
Estimated: Flash ADC power scales with sample rate and output loading. For the HI3026JCQ, expect approximately 0.5-1 W dissipation under typical operating conditions, but the exact number from the manufacturer datasheet should be confirmed during thermal design. Use a multilayer PCB with thermal vias under the MQFP thermal pad and provide at least 1 sq inch of copper to keep the junction temperature rise within the operating range.
מידע על תאימות
Compliance status not in verified snippets. The legacy Renesas/Intersil HI3026 family was developed before widespread RoHS/REACH mandates; verify with manufacturer datasheet before placing into a RoHS/REACH-compliant production run.
