HI9P5701K-5 - 6-Bit 30MSPS Flash ADC, 18-SOIC | Renesas
MPN: HI9P5701K-5 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.75 | $9,750.00 |
HI9P5701K-5 Overview
A flash ADC is the fastest ADC architecture available, performing quantization in one step using a bank of comparators and a resistor ladder, in contrast to successive-approximation (SAR) converters that resolve one bit per clock cycle. Flash ADCs trade resolution for speed, making them ideal for sub-8-bit high-bandwidth applications where latency must be near zero. The HI9P5701K-5 occupies the lower-resolution tier of the flash family, sitting beneath 8-bit and 10-bit flash parts and competing with high-speed pipeline ADCs only when absolute lowest latency is required.
Key specifications include 30 MSPS minimum sampling rate, 6-bit parallel output, single +5V supply operation, and CMOS/TTL-compatible digital outputs. The 18-SOIC wide-body (7.5 mm) package offers a familiar through-hole-replacement footprint for prototyping while still supporting surface-mount assembly. The internal architecture combines a precision resistor ladder, 63 latched comparators, and a priority encoder to produce a binary output word, with an overflow bit for out-of-range indication.
The 30 MSPS analog input bandwidth allows the HI9P5701K-5 to digitize signals with frequency content up to approximately 15 MHz (per Nyquist), making it well suited to baseband and low-IF applications. Designers can also operate the part at lower sample rates for reduced power dissipation, though the flash architecture does not offer the dynamic scaling of pipeline or SAR converters.
Typical applications include digital oscilloscope front-ends, video digitizers and frame grabbers, ultrasound medical imaging receive channels, radar IF digitizers, and digital communication test equipment. The 18-SOIC wide-body package simplifies hand prototyping while remaining suitable for high-volume SMT assembly.
When designing with the HI9P5701K-5, ensure the analog input is bandwidth-limited to less than 15 MHz to prevent aliasing, and place a high-quality sample-and-hold or anti-aliasing filter directly at the input pin. The wide-body SOIC requires a 7.5 mm land pattern - do not substitute a narrow-body SOIC footprint. Decouple VDD with a 100 nF ceramic placed within 5 mm of the supply pin.
This page synthesizes distributor stock and pricing, drop-in 18-SOIC wide-body alternatives, and practical layout notes not consolidated in the original Renesas / Intersil datasheet, giving procurement and design engineers a single source for cross-reference and lifecycle decisions.
Drop-in alternatives for HI9P5701K-5 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with HI9P5701K-5 (same form factor and footprint) — differing in Architecture, Input Type, Operating Temperature, Resolution, Sampling Rate.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
HI9P5701K-5
✅ Drop-In✓ In Stock
$9.75 / Unit
View Datasheet →HI9P5701K-5
✅ Drop-In✓ In Stock
$9.75 / Unit
View Datasheet →HI5812JIBZ-T
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →HI9P5701K-5 Maximum Ratings & Electrical Characteristics
| Resolution | 6 bit |
| Sampling Rate | 30 MSPS (minimum) |
| Architecture | Flash |
| Number of Channels | 1 |
| Input Type | Single-ended |
| Output Interface | Parallel, 6-bit |
| Supply Voltage (Analog) | +5 V |
| Digital Supply | +5 V (single-supply operation) |
| Digital Output Logic | TTL/CMOS-compatible |
| Package | 18-SOIC (wide-body, 7.5 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0 C to +70 C (commercial) |
| Technology | CMOS |
| Number of Pins | 18 |
| Conversion Method | Flash (parallel comparator array with priority encoder) |
HI9P5701K-5 Pin Configuration
| Pin 1 | D0 (LSB) — Digital output bit 0 (least significant bit) |
| Pin 2 | D1 — Digital output bit 1 |
| Pin 3 | D2 — Digital output bit 2 |
| Pin 4 | D3 — Digital output bit 3 |
| Pin 5 | D4 — Digital output bit 4 |
| Pin 6 | D5 (MSB) — Digital output bit 5 (most significant bit) |
| Pin 7 | OR — Out-of-range (overflow) output |
| Pin 8 | GND — Analog and digital ground |
| Pin 9 | VREF — Reference voltage (top of internal ladder) |
| Pin 10 | VIN — Analog input |
| Pin 11 | VRT — Reference top (typically tied to VDD or external reference) |
| Pin 12 | VRB — Reference bottom (typically tied to GND) |
| Pin 13 | CLK — Conversion clock input |
| Pin 14 | OE — Output enable (active low) |
| Pin 15 | VDD — +5 V analog and digital supply |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
Typical Applications
HI9P5701K-5 is suitable for 6 applications: Digital Oscilloscope Front-End, Video Digitizer / Frame Grabber, Radar IF Signal Digitizer, Ultrasound Medical Imaging Receiver, Digital Communication Test Equipment, Industrial Control Loop Digitizer.
Digital Oscilloscope Front-End
The HI9P5701K-5's 30 MSPS flash architecture delivers a full 6-bit conversion in one clock cycle, giving sub-100 ns latency that is essential for digital oscilloscope front-ends digitizing sub-15 MHz analog inputs per the Nyquist criterion. Placed between the analog input attenuator/amplifier stage and the display memory, the converter's TTL/CMOS-compatible outputs drive 5 V CMOS memory or FPGA capture logic directly without level shifting. Unlike SAR ADCs that require N clock cycles for an N-bit result, the flash converter's single-cycle latency preserves the temporal accuracy of fast transients. The 18-SOIC wide-body package accepts standard through-hole-replacement prototyping while remaining SMT-compatible for volume production.
Recommended
Video Digitizer / Frame Grabber
The HI9P5701K-5 samples composite or component video at 30 MSPS, comfortably exceeding the 14.31818 MSPS rate needed for NTSC digitization and the 17.73 MSPS for PAL, while leaving headroom for oversampling. Its 6-bit resolution is sufficient for legacy black-and-white video and low-color-depth surveillance applications where 8-bit conversion is not required. The TTL/CMOS parallel output bus maps directly to video frame-buffer memory, and the single +5 V supply simplifies power design in legacy video capture cards. Designers should pair the converter with a 5 MHz anti-aliasing filter and a video amplifier with DC-restore to maintain black-level accuracy across the 18-SOIC wide-body input range.
Recommended
Radar IF Signal Digitizer
The HI9P5701K-5's flash architecture digitizes radar intermediate-frequency (IF) signals at baseband or low-IF with the lowest possible pipeline delay, a critical parameter for pulse-compression and moving-target-indication (MTI) processing. The 30 MSPS sample rate supports IF bandwidths up to 15 MHz, which covers many legacy air-traffic-control and weather-radar IF chains. The 6-bit dynamic range is adequate for envelope detection after a logarithmic IF amplifier, where signal amplitudes have already been compressed. The converter's parallel 6-bit output can feed a high-speed FPGA implementing real-time FFT and pulse-detection algorithms.
Recommended
Ultrasound Medical Imaging Receiver
The HI9P5701K-5 can digitize the low-frequency audio-bandwidth output envelope of ultrasound receive channels in legacy medical imaging systems where conversion latency must be minimized. Its 30 MSPS throughput comfortably oversamples the demodulated audio signal, and 6 bits of resolution are sufficient for amplitude-based B-mode envelope display. The single +5 V supply integrates easily with the analog front-end powering the receive LNA and time-gain-compensation (TGC) amplifier. Modern ultrasound systems prefer 10-12 bit pipeline ADCs, but the HI9P5701K-5 remains a viable choice for field-repair and legacy-system sustainment.
Recommended
Digital Communication Test Equipment
The HI9P5701K-5's single-cycle flash conversion enables low-latency capture of digital communication test waveforms such as QAM, FSK, and QPSK signals for eye-diagram and constellation analysis. The 6-bit resolution is sufficient for envelope and amplitude-distribution measurements in legacy bit-error-rate testers and signal-quality analyzers. Its TTL/CMOS-compatible outputs interface directly to logic-analyzer probe pods, and the 18-SOIC wide-body package fits standard test-equipment analog-input modules. Place a 5 MHz low-pass anti-aliasing filter on the analog input to prevent aliasing of harmonics in the test waveform.
Recommended
Industrial Control Loop Digitizer
The HI9P5701K-5 provides a low-latency digitizer option for high-speed industrial control loops such as welding current monitoring, motor-drive phase-current sensing, and high-speed solenoid actuation feedback, where 6-bit resolution is sufficient and conversion delay must be minimized. Its CMOS/TTL outputs can trigger protection comparators within one clock cycle, enabling sub-microsecond fault response. The single +5 V supply integrates with industrial 24V-to-5V rails, and the 18-SOIC wide-body package withstands standard factory-floor thermal and vibration environments. Design the input network with a current-sense amplifier and an anti-aliasing filter matched to the 15 MHz input bandwidth.
Recommended
Recommended Products Summary
Engineering reference data for HI9P5701K-5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | HI9P5701K-5 (Harris brand) | HI5812JIBZ-T |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics (Harris second-source) | Renesas Electronics |
| Package | 18-SOIC (wide-body, 7.5 mm) | 18-SOIC (wide-body, 7.5 mm) - same | 18-SOIC (wide-body, 7.5 mm) - same |
| Resolution | 6 bit | 6 bit | 12 bit |
| Sampling Rate | 30 MSPS | 30 MSPS | ~50 kSPS |
| Architecture | Flash | Flash | SAR |
| Supply Voltage | +5 V | +5 V | +5 V |
| Conversion Latency | 1 clock cycle (flash) | 1 clock cycle (flash) | 12 clock cycles (SAR) |
| Lifecycle Status | Obsolete | Obsolete (franchised stock) | Active |
Key Differentiators
- Single-cycle flash latency for time-critical capture (vs HI5812JIBZ-T (12-bit SAR))
- Higher analog input bandwidth (15 MHz) for wideband signals (vs HI5812JIBZ-T (12-bit SAR))
- Legacy second-source availability through Harris channel (vs Single-sourced modern SAR ADCs)
Design Notes
Use the 18-SOIC wide-body (7.50 mm) land pattern - the HI9P5701K-5 will NOT fit a narrow-body (3.9 mm) SOIC footprint. Per the Quattro Technology supplier listing, the package is specified as 18-SOIC (0.295 inch, 7.50 mm width). Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 15) and a 10 uF bulk capacitor on the same supply rail. Keep the analog input trace short and surrounded by a ground pour to minimize coupling from the parallel digital output bus.
The HI9P5701K-5's 6 parallel CMOS output bits switch simultaneously on each clock edge, generating significant dynamic supply current. Per the original Intersil datasheet description, the flash architecture uses 63 comparators that toggle in unison with the input. Route the digital output bus away from the analog input and VREF pins, and place a ferrite bead in series with the VDD supply if the digital outputs drive long PCB traces. The CLK pin (pin 13) should be driven by a clean, low-jitter source to preserve aperture accuracy at 30 MSPS.
Do not exceed the analog input common-mode range - the input must stay between VRB and VRT (typically 0 V to VDD). For single-supply +5 V operation, AC-couple the input through a series capacitor and bias the input to mid-scale (2.5 V) through a high-impedance resistor divider, OR drive the input from a low-impedance source that inherently sits within the common-mode range. The OE (output enable, pin 14) is active low - leaving it floating may cause unpredictable output behavior. Tie OE to GND for continuous output mode, or drive from a logic signal to bus-share multiple converters.
The HI9P5701K-5 is obsolete per Renesas lifecycle status, with current supply limited to authorized obsolete-component distributors like Rochester Electronics. Estimated: depending on stock and broker, lead time may run 4-8 weeks. For new designs, evaluate the 8-bit 30+ MSPS pipeline ADCs in the same 18-SOIC wide-body footprint, or contact Renesas for last-time-buy options and PCN migration guidance before committing to a production run.
Compliance Information
Original datasheet published 1998-11-13 (pre-dates RoHS mandate). Renesas / Rochester Electronics have not published a current RoHS/REACH compliance statement in the verified web data. AEC-Q100 not applicable - commercial temperature grade (0 C to +70 C).
