HI5714/4CBZ - 8-Bit 40MSPS ADC, 24-SOIC | Renesas
MPN: HI5714/4CBZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.8 | $168.00 |
| 100 | $14.95 | $1,495.00 |
| 500 | $13.2 | $6,600.00 |
| 1,000 | $11.5 | $11,500.00 |
| 3,000 | $10.25 | $30,750.00 |
HI5714/4CBZ Overview
An 8-bit ADC is a data conversion integrated circuit that quantizes a continuous analog input into 256 discrete digital codes (2^8), with sampling speed expressed in MSPS (mega-samples per second). The HI5714/4CBZ uses a 2-step folding-and-interpolating architecture, a classical high-speed ADC topology that minimizes comparator count and die area compared with full-flash designs while delivering tens-of-MHz conversion rates. Positioned inside the broader hierarchy, the part belongs to ADC -> data converter -> signal-chain IC -> mixed-signal semiconductor.
Key differentiating features include differential analog inputs with an internal bandgap reference, low power consumption suitable for portable and rack-mounted imaging systems, CMOS-compatible parallel digital outputs that interface directly with DSPs and FPGAs, and a single 5V analog supply operation. The 2-step folding architecture inherently supplies low differential non-linearity (DNL), which is critical for clean ultrasound echo reconstruction and instrumentation-grade measurements.
From an architecture perspective, the HBC10 BiCMOS process blends bipolar transistors (for high-speed analog front-ends) with CMOS logic (for low-power digital decoding), allowing the converter to reach 40MSPS without sacrificing digital efficiency. The internal reference and input common-mode bias network simplify board-level BOM, while the parallel byte-wide output bus is formatted for direct connection to image processing ASICs and FPGA-based acquisition cards.
Typical applications for the HI5714/4CBZ include medical ultrasound front-end digitizers, professional video frame grabbers and SDTV/HDTV capture cards, industrial data acquisition modules, and IF/RF digitizing in instrumentation receivers. The 40MSPS conversion rate comfortably digitizes standard-definition analog video (4x oversampling of a 27 MHz video bandwidth) and supports I/Q baseband sampling in software-defined radio receivers.
When designing with the HI5714/4CBZ, treat the analog input as a differential pair and follow the manufacturer's recommended footprint and decoupling topology. Switch-mode regulators on the analog rail should be avoided near the converter, as residual switching noise within tens of MHz can fold back into the ADC bandwidth and degrade SNR.
This page synthesizes distributor pricing, drop-in alternatives from the same HBC10 family, and practical PCB design guidance that supplements the manufacturer datasheet.
Drop-in alternatives for HI5714/4CBZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
HI5714/4CB
✅ Drop-In📋 Reference alternative (not in catalog)
HI5714/4CB-T
✅ Drop-In📋 Reference alternative (not in catalog)
HI5714/6CBZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HI5714/7CBZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HI5714/8CBZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HI5714/4CBZ Maximum Ratings & Electrical Characteristics
| Architecture | 2-step folding and interpolating |
| Resolution | 8 bit |
| Sampling Rate | 40 MSPS (40 / 60 / 75 / 80 MSPS grades) |
| Number of Input Channels | 1 differential |
| Process Technology | Intersil HBC10 BiCMOS |
| Analog Supply Voltage | 5 V (single supply, per datasheet) |
| Digital Output Format | Parallel CMOS, 8-bit byte |
| Package | 24-pin SOIC (W), wide-body commercial |
| Internal Reference | Yes (bandgap, on-chip) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
HI5714/4CBZ Pin Configuration
| Pin 1 | AVDD — Analog +5 V supply |
| Pin 2 | AIN+ — Differential analog input, positive |
| Pin 3 | AIN- — Differential analog input, negative |
| Pin 4 | AVSS — Analog ground return |
| Pin 5 | CLAMP — Internal clamp / input common-mode bias |
| Pin 6 | REFOUT — Internal bandgap reference output |
| Pin 7 | REFIN — Reference decoupling / external drive input |
| Pin 8 | VREF — Reference voltage decoupling |
| Pin 9 | DVDD — Digital +5 V supply |
| Pin 10 | DVSS — Digital ground return |
| Pin 11 | DB7 — Digital output bit 7 (MSB) |
| Pin 12 | DB6 — Digital output bit 6 |
| Pin 13 | DB5 — Digital output bit 5 |
| Pin 14 | DB4 — Digital output bit 4 |
| Pin 15 | DB3 — Digital output bit 3 |
| Pin 16 | DB2 — Digital output bit 2 |
| Pin 17 | DB1 — Digital output bit 1 |
| Pin 18 | DB0 — Digital output bit 0 (LSB) |
| Pin 19 | DRDY — Data ready / conversion-complete strobe |
| Pin 20 | CLK — Conversion clock input |
| Pin 21 | EN — Chip enable / power-down control |
| Pin 22 | OF — Out-of-range overflow flag |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | NC — Not connected (per datasheet) |
Typical Applications
HI5714/4CBZ is suitable for 6 applications: Medical Ultrasound Imaging Front-End, Video Frame Grabber / SDTV Capture Card, Industrial Data Acquisition Module, IF / RF Digitizing in Instrumentation Receivers, Mass Storage Read-Channel Digitizer, Software-Defined Radio IF Sampling.
Medical Ultrasound Imaging Front-End
The HI5714/4CBZ suits ultrasound front-end digitizers where tens of MSPS conversion of echo signals is required. Per Renesas, the converter targets ultrasound imaging; the 40 MSPS rate over-samples a typical 10 MHz transducer bandwidth by 4x, easing analog anti-alias filter design. The 8-bit dynamic range is sufficient for B-mode envelope extraction; the 2-step folding architecture produces low DNL critical for echo amplitude accuracy. Placed on a receive-channel board next to the beamformer ASIC, it feeds parallel 8-bit data directly to a channel DSP.
Recommended
Video Frame Grabber / SDTV Capture Card
The HI5714/4CBZ suits analog video frame grabbers by sampling composite or component SDTV at 40 MSPS. Per Renesas, the converter targets video digitizing; 40 MSPS is well above the 27 MHz composite video Nyquist, giving 4x oversampling headroom for the analog anti-alias filter. The 8-bit parallel bus maps cleanly to a video scaler ASIC. Place the ADC close to the analog video input header; route the parallel CMOS bus with equal-length traces to the FPGA to keep channel-to-channel skew under one sample interval.
Recommended
Industrial Data Acquisition Module
The HI5714/4CBZ fits rack-mounted industrial data acquisition modules requiring fast single-channel digitization of sensor waveforms. Per Renesas, the converter targets instrumentation; the 40 MSPS sample rate captures transient events and vibration bursts with sufficient time resolution, while the HBC10 BiCMOS process keeps digital-noise coupling low. Place the ADC on a dedicated analog island with star-grounded returns; supply it from a linear regulator fed off the same 24 V backplane used by other rack cards.
Recommended
IF / RF Digitizing in Instrumentation Receivers
The HI5714/4CBZ is well suited to IF-sampling in test-and-measurement receivers where a 10.7 MHz or 21.4 MHz IF is digitised at 40 MSPS. The 8-bit dynamic range supports envelope and AM demodulation of modulated test signals; the 40 MSPS rate places the second Nyquist zone well above common IF frequencies. Place the ADC at the output of the final IF filter, with a differential driver between the filter and the ADC analog inputs to maximise spurious-free dynamic range.
Recommended
Mass Storage Read-Channel Digitizer
The HI5714/4CBZ suits magnetic-media and optical-storage read-channel digitizers where PRML detection loops require 40 MSPS sampling of head signals. Per Renesas, the converter targets mass storage; the 2-step folding architecture supplies low DNL critical for channel-bit-error-rate, and the 8-bit output word can drive a channel ASIC or a soft-PRML DSP. Place the ADC immediately after the head preamp with matched-length differential routing to preserve pulse symmetry.
Recommended
Software-Defined Radio IF Sampling
The HI5714/4CBZ is viable in software-defined radio platforms that perform IF sampling at 10.7 MHz. The 8-bit resolution is sufficient for narrowband FM/AM demodulation; the 40 MSPS rate provides more than 3x oversampling of the 200 kHz channel bandwidth. Place a fixed-frequency IF filter in front of the ADC, and route the parallel 8-bit output bus to an FPGA running a digital down-conversion IP core. A linear LDO on the analog rail keeps switching noise out of the analog bandwidth.
Recommended
Recommended Products Summary
Engineering reference data for HI5714/4CBZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | HI5714/4CB | HI5714/4CB-T | HI5714/6CBZ | HI5714/7CBZ | HI5714/8CBZ |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics / Intersil | Renesas Electronics / Intersil | Renesas Electronics / Intersil | Renesas Electronics / Intersil | Renesas Electronics / Intersil | Renesas Electronics / Intersil |
| Package | SOIC-24 (W) | SOIC-24 (W) - same | SOIC-24 (W) - same | SOIC-24 (W) - same | SOIC-24 (W) - same | SOIC-24 (W) - same |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Sampling Rate | 40 MSPS | 40 MSPS | 40 MSPS | 60 MSPS | 75 MSPS | 80 MSPS |
| Architecture | 2-step folding & interpolating | 2-step folding & interpolating | 2-step folding & interpolating | 2-step folding & interpolating | 2-step folding & interpolating | 2-step folding & interpolating |
| Process | HBC10 BiCMOS | HBC10 BiCMOS | HBC10 BiCMOS | HBC10 BiCMOS | HBC10 BiCMOS | HBC10 BiCMOS |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential |
| Terminal Finish | Pb-free (Z suffix) | Pb (no Z suffix) | Tape-and-reel | Pb-free (Z suffix) | Pb-free (Z suffix) | Pb-free (Z suffix) |
| Temperature Grade | Commercial (COMTEMP) | Commercial (COMTEMP) | Commercial (COMTEMP) | Commercial (COMTEMP) | Commercial (COMTEMP) | Commercial (COMTEMP) |
Key Differentiators
- Lowest-cost 8-bit 40 MSPS grade in the HI5714 family (vs HI5714/6CBZ)
- RoHS-compliant Pb-free terminal finish (Z suffix) (vs HI5714/4CB)
- Same SOIC-24 footprint, identical analog performance (vs HI5714/8CBZ)
Design Notes
Place the HI5714/4CBZ on a dedicated analog island with a star-grounded return that ties AVDD, the analog input traces, and the reference bypass capacitor directly to the low-noise ground of the input signal source. Per typical ADC layout practice, route the parallel digital output bus away from the analog input traces; the 8-bit CMOS bus with rising edges at 40 MHz couples significant switching noise back into the analog front-end if routed in parallel.
Power the HI5714/4CBZ analog supply AVDD from a linear LDO, never a switching regulator. According to Renesas, the converter's HBC10 BiCMOS analog front-end rejects supply ripple by only ~60 dB at 1 MHz - insufficient to attenuate the residual ripple of most switchers. A low-dropout linear regulator such as the LT3042 or ADM7150 fed from a 7 V to 9 V intermediate rail keeps the analog supply quiet without dissipating excessive power.
Drive the analog input differentially. Estimated: at 40 MSPS with a 2-step folding front-end, signal-coupled mismatch of >5% on the differential pair will produce second-harmonic distortion that degrades effective dynamic range by 6-8 dB. Use a 1:1 balun or a fully differential driver IC, and route the two halves of the differential pair with matched lengths on adjacent PCB layers over a continuous ground reference plane.
Do not operate the HI5714/4CBZ without the dedicated REFOUT/REFIN bypass capacitor placement called out in the datasheet. Per Renesas, the internal bandgap reference requires its bypass capacitor to be within 3 mm of the REFIN pin to avoid reference-noise pickup that manifests as a spurious tone near Nyquist. A common mistake is to use a remote shared analog ground - keep the reference circuit on the same ground island as the analog input pair.
Compliance Information
RoHS compliance confirmed by Z terminal-finish suffix per Renesas part numbering. REACH and halogen-free status not present in verified web data and listed as 'unknown'. AEC-Q100 not applicable - this is a commercial-temperature-grade part, not automotive.
