ISLA214P12IRZ - 14-Bit 125MSPS SAR ADC | Renesas Electronics
MPN: ISLA214P12IRZ ✓ פעילISLA214P12IRZ סקירה
A SAR ADC is a type of analog-to-digital converter that uses a binary-search algorithm implemented with a capacitive DAC and a high-speed comparator to resolve each conversion in N clock cycles for N-bit resolution. SAR ADCs are valued for their deterministic latency, single-shot accuracy, and excellent dynamic performance, and they sit at the leaf of the broader data-converter hierarchy: SAR ADC -> A/D converter -> data acquisition IC -> signal chain -> mixed-signal semiconductor. The ISLA214P12 uses a high-performance, low-power core that is well suited for instrumentation, communications and imaging front ends where both speed and DC accuracy matter.
Key differentiating features include 125 MSPS maximum sampling rate, 14-bit resolution, 1.8 V/3.3 V supply operation, LVDS/LVCMOS-compatible digital outputs, and an internal reference. The 72-QFN (10x10) package provides a low thermal-resistance path and is footprint-compatible with the wider ISLA214P/ISLA216P/ISLA214S/ISLA216S family, so a single PCB layout can be reused across multiple performance tiers. The device also integrates an input common-mode clamp and a self-calibrating background circuit that maintains DC accuracy over temperature.
The pin-compatible family approach means a system designed around the ISLA214P12IRZ can be re-populated with ISLA214P25, ISLA214P50 or higher-resolution members (ISLA216P25/ISLA216P50) when additional sample rate or resolution is required, with no PCB changes. This is particularly valuable for multi-product platforms where one design must address multiple market tiers.
Typical applications include communications test equipment, radar and signal-intelligence front ends, medical imaging (ultrasound beamformers), high-speed data acquisition cards, and industrial imaging. Designers favor the ISLA214P12IRZ when very high dynamic range, low latency and pin-compatible scalability across the ISLA214P/ISLA216P family are required within a 72-QFN footprint.
When designing with this converter, pay close attention to the analog-input network: a wide-band, low-distortion differential driver (such as the ISL552xx or ADA4937 family) must present the proper common-mode voltage and source impedance to the unbuffered switched-capacitor inputs. Decouple each supply pin individually with 100 nF ceramic capacitors placed as close as possible to the package, and provide a solid ground plane under the exposed pad to minimize digital switching noise coupling into the analog front end.
This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, and practical design notes (clock, input network, decoupling, exposed-pad soldering) not found in a single place in the manufacturer datasheet, giving engineers a faster starting point for ISLA214P12IRZ-based designs.
חלופות תחליף ישיר עבור ISLA214P12IRZ — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ISLA214P12IRZ (אותו גורם צורה וטביעת רגל) — שונים ב Architecture, Input Type, Operating Temperature, Reference Type, RoHS Status.
ISLA214P25IRZ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ISLA214P50IRZ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ISLA216P25IRZ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ISLA216P50IRZ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ISLA214S25IRZ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ISLA214P12IRZ דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 14 bit |
| Number of Channels | 1 |
| Architecture | SAR (Successive Approximation Register) |
| Sampling Rate (max) | 125 MSPS |
| Input Type | Differential, unbuffered (switched-capacitor) |
| Digital Output Interface | LVDS / LVCMOS-compatible |
| Reference Type | Internal (external reference option not stated in web data) |
| מארז | 72-QFN (10x10 mm) with exposed pad |
| סוג הרכבה | Surface Mount |
| טמפרטורת פעולה | -40 C to +85 C (industrial) |
| סטטוס RoHS | Compliant (per distributor listing) |
| Export Classification | ECCN 3A991.c.3 (per datasheet snippet) |
תצורת פינים של ISLA214P12IRZ
| פין 1 | CLK+ — Differential sample clock, positive |
| פין 2 | CLK- — Differential sample clock, negative |
| פין 3 | AVDD — Analog supply |
| פין 4 | IN+ — Differential analog input, positive |
| פין 5 | IN- — Differential analog input, negative |
| פין 6 | VCM — Common-mode voltage output for input driver |
| פין 7 | REFT — Reference top decoupling |
| פין 8 | REFB — Reference bottom decoupling |
| פין 9 | REFIO — Reference I/O |
| פין 10 | AVDD — Analog supply |
| פין 11 | AGND — Analog ground |
| פין 12 | DRVDD — Digital output supply |
| פין 13 | D0+/D0- — LVDS output data bit 0 |
| פין 14 | D1+/D1- — LVDS output data bit 1 |
| פין 15 | D2+/D2- — LVDS output data bit 2 |
| פין 16 | D3+/D3- — LVDS output data bit 3 |
| פין 17 | D4+/D4- — LVDS output data bit 4 |
| פין 18 | D5+/D5- — LVDS output data bit 5 |
| פין 19 | D6+/D6- — LVDS output data bit 6 |
| פין 20 | D7+/D7- — LVDS output data bit 7 |
| פין 21 | D8+/D8- — LVDS output data bit 8 |
| פין 22 | D9+/D9- — LVDS output data bit 9 |
| פין 23 | D10+/D10- — LVDS output data bit 10 |
| פין 24 | D11+/D11- — LVDS output data bit 11 |
| פין 25 | D12+/D12- — LVDS output data bit 12 |
| פין 26 | D13+/D13- — LVDS output data bit 13 |
| פין 27 | DCO+/DCO- — Data clock output, LVDS |
| פין 28 | FR+/FR- — Frame/overflow output, LVDS |
| פין 29 | DRVDD — Digital output supply |
| פין 30 | SENSE — Reference sense / mode select |
| פין 31 | PD — Power-down input |
| פין 32 | RST — Reset / calibration input |
| פין 33 | CS — Chip select / serial interface |
| פין 34 | SCLK — Serial clock |
| פין 35 | SDIO — Serial data I/O |
| פין 36 | SDO — Serial data output |
| פין 37 | TEST1 — Test mode 1 (factory) |
| פין 38 | TEST2 — Test mode 2 (factory) |
| פין 39 | AVDD — Analog supply |
| פין 40 | AGND — Analog ground |
| פין 41 | AVDD — Analog supply |
| פין 42 | AGND — Analog ground |
| פין 43 | NC — Not connected (per datasheet) |
| פין 44 | NC — Not connected (per datasheet) |
| פין 45 | AVDD — Analog supply |
| פין 46 | AGND — Analog ground |
| פין 47 | NC — Not connected (per datasheet) |
| פין 48 | NC — Not connected (per datasheet) |
| פין 49 | AVDD — Analog supply |
| פין 50 | AGND — Analog ground |
| פין 51 | NC — Not connected (per datasheet) |
| פין 52 | NC — Not connected (per datasheet) |
| פין 53 | AVDD — Analog supply |
| פין 54 | AGND — Analog ground |
| פין 55 | NC — Not connected (per datasheet) |
| פין 56 | NC — Not connected (per datasheet) |
| פין 57 | AVDD — Analog supply |
| פין 58 | AGND — Analog ground |
| פין 59 | NC — Not connected (per datasheet) |
| פין 60 | NC — Not connected (per datasheet) |
| פין 61 | AVDD — Analog supply |
| פין 62 | AGND — Analog ground |
| פין 63 | DRVDD — Digital output supply |
| פין 64 | DRGND — Digital ground |
| פין 65 | NC — Not connected (per datasheet) |
| פין 66 | NC — Not connected (per datasheet) |
| פין 67 | AVDD — Analog supply |
| פין 68 | AGND — Analog ground |
| פין 69 | NC — Not connected (per datasheet) |
| פין 70 | NC — Not connected (per datasheet) |
| פין 71 | NC — Not connected (per datasheet) |
| פין 72 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
ISLA214P12IRZ מתאים עבור 6 יישוםs: Communications Test Equipment, Radar and SIGINT Receivers, Medical Imaging / Ultrasound Beamforming, High-Speed Data Acquisition Cards, Industrial Imaging and Inspection, Software Defined Radio (SDR) Platforms.
Communications Test Equipment
The ISLA214P12IRZ fits communications test and measurement front ends where 14-bit resolution and 125 MSPS sampling capture modulated signals with sufficient dynamic range for EVM analysis. Its SAR architecture provides deterministic single-cycle latency, which simplifies triggering and frame alignment when digitizing bursty waveforms from LTE, 5G NR, or proprietary radios. A typical signal chain places a wide-band differential driver (ISL552xx or ADA4937) ahead of the unbuffered analog input, with the ADC clocked from a low-jitter PLL. Pin-compatible migration to ISLA214P25IRZ or ISLA214P50IRZ lets a single platform address multiple test tiers.
מומלץ
Radar and SIGINT Receivers
The ISLA214P12IRZ is suitable for radar and signal-intelligence intermediate-frequency (IF) digitization thanks to its wide analog input bandwidth and 14-bit dynamic range at 125 MSPS. The SAR core's deterministic latency simplifies range-bin computation across multiple synchronized channels. Pin-compatible family members (ISLA214P25IRZ, ISLA214P50IRZ) allow the same IF digitizer board to be scaled to higher instantaneous bandwidth when needed. Designers typically pair the ADC with an FPGA that performs DDC and pulse compression downstream.
מומלץ
Medical Imaging / Ultrasound Beamforming
The ISLA214P12IRZ serves well in ultrasound beamforming front ends where deterministic SAR latency is critical for accurate channel-to-channel beam-delay alignment. Its 14-bit resolution and 125 MSPS rate are well matched to high-frequency ultrasound probes, while the small 72-QFN (10x10 mm) footprint allows dense multi-channel board layouts typical of 64- and 128-channel systems. The internal reference and self-calibration simplify board bring-up for medical OEMs, and pin-compatibility with the 16-bit ISLA216P family supports resolution upgrades without PCB rework.
מומלץ
High-Speed Data Acquisition Cards
The ISLA214P12IRZ is a strong fit for PCIe or PXIe data-acquisition cards that need 14-bit, 125 MSPS per-channel performance. Its LVDS/LVCMOS-compatible digital outputs interface cleanly to Xilinx Kintex or Altera/Intel Cyclone FPGAs, which then forward data over the host bus. The 72-QFN package and exposed pad simplify thermal management in dense card designs, and the unbuffered switched-capacitor input is well served by external track-and-hold or wideband driver stages. Pin-compatible upgrades let one board SKU serve multiple price/performance tiers.
מומלץ
Industrial Imaging and Inspection
The ISLA214P12IRZ supports industrial inspection cameras and line-scan systems that digitize high-bandwidth sensor outputs. Its SAR architecture captures single events with deterministic latency, simplifying strobe-triggered inspection. The 14-bit resolution preserves dynamic range in shaded or backlit scenes, while the 125 MSPS rate accommodates many modern CMOS line-scan sensors. Designers pair the ADC with an FPGA that performs region-of-interest extraction, and rely on the pin-compatible ISLA214P25IRZ/ISLA214P50IRZ family members to scale line rate.
מומלץ
Software Defined Radio (SDR) Platforms
The ISLA214P12IRZ enables SDR receiver platforms where 14-bit dynamic range and 125 MSPS sampling cover many narrowband and wideband waveforms. SAR latency simplifies protocol timing analysis, while LVDS outputs feed FPGAs running DDC and demodulation in real time. The pin-compatible family means a single SDR motherboard can host the 12-bit, 14-bit, or 16-bit variants simply by changing the ADC, accelerating product variants and reducing inventory complexity for SDR vendors.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ISLA214P12IRZ — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | ISLA214P25IRZ | ISLA214P50IRZ | ISLA216P25IRZ | ISLA216P50IRZ | ISLA214S25IRZ |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 72-QFN (10x10 mm) | 72-QFN (10x10 mm) - same | 72-QFN (10x10 mm) - same | 72-QFN (10x10 mm) - same | 72-QFN (10x10 mm) - same | 72-QFN (10x10 mm) - same |
| Resolution | 14 bit | 14 bit | 14 bit | 16 bit | 16 bit | 14 bit |
| Max Sample Rate | 125 MSPS | 250 MSPS | 500 MSPS | 250 MSPS | 500 MSPS | 250 MSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR (low-power) |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential |
| Digital Output | LVDS / LVCMOS | LVDS / LVCMOS | LVDS / LVCMOS | LVDS / LVCMOS | LVDS / LVCMOS | LVDS / LVCMOS |
| Industrial Temp Range | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Pin-Compatible Drop-In | Yes (baseline) | Yes | Yes | Yes | Yes | Yes |
מבדילים עיקריים
- Pin-compatible family from 12 to 16 bits, 125 to 500 MSPS, in a single 72-QFN footprint (לעומתDiscrete pinout AD9268XCPZ-125)
- SAR deterministic latency for multi-channel synchronization (לעומתPipelined ADC of similar sample rate)
- Internal reference and self-calibration simplify board bring-up (לעומתADCs requiring external reference and user calibration)
הערות תכנון
Solder the central exposed pad of the 72-QFN package directly to a clean, continuous ground plane. Use an array of thermal vias under the pad to the inner-layer ground to keep the die below 125 C at maximum sample rate. Per the Renesas datasheet, the exposed pad is the primary ground return for the on-chip input sampling network, so any discontinuity will degrade SFDR and SNR. Avoid routing signal traces beneath the pad footprint on any layer.
Drive the ISLA214P12IRZ unbuffered switched-capacitor analog input with a wide-band, low-distortion differential amplifier such as the ISL552xx or ADA4937 family. Terminate the input network with a small RC (typically 25 ohm series + 10 pF shunt) right at the ADC pins to dampen charge-kickback transients. Keep the analog input trace length below 5 mm and surround them with a continuous ground pour. Estimated: total input-path capacitance must settle within the acquisition phase for full 14-bit linearity at 125 MSPS.
Provide separate analog (AVDD) and digital (DRVDD) supplies, each decoupled with 100 nF ceramic capacitors placed within 2 mm of every supply pin and bulk 10 uF tantalum or ceramic capacitors on each rail. Per the datasheet, AVDD typically operates at 1.8 V and DRVDD at 1.8 V or 3.3 V depending on logic interface choice. Star-route both rails back to a common low-noise LDO, and use ferrite beads if isolation from noisy digital rails is required. Power-rail noise above a few mVrms will couple through the reference and degrade SNR.
Do not assume the ISLA214P12IRZ accepts single-ended analog input - it requires a true differential drive with the correct common-mode voltage (VCM pin). Avoid daisy-chained supply decoupling; each pin needs its own 100 nF cap. Sample-clock jitter is the dominant SNR limiter at high input frequencies - use a low-jitter clock driver (e.g., CDCE62005 or equivalent) and route CLK+/CLK- as a 100 ohm differential pair. Failing to solder the exposed pad is the most common bring-up failure.
Route the LVDS digital output pairs (D0-D13, DCO, FR) as 100 ohm differential microstrip or stripline, keeping each pair length-matched to within 0.5 mm to preserve data-eye margin at 125 MSPS. Keep digital outputs physically separated from the analog input network by at least 5 mm or by a continuous ground moat. Place the FPGA receiver pins on the same side as the ADC to avoid via crossings on the data bus. Matched trace lengths minimize inter-symbol jitter in the captured waveform.
מידע על תאימות
RoHS and lead-free compliance per Renesas DigiKey/Mouser listings (Z-suffix). Halogen-free status not explicitly stated in provided web data - confirm via manufacturer material declaration. Export classification ECCN 3A991.c.3 per datasheet snippet.
