ISLA214P25IRZ - 14-Bit 250MSPS ADC, 72-QFN | Renesas
MPN: ISLA214P25IRZ ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $38.5 | $38.50 |
| 10 | $35.2 | $352.00 |
| 100 | $30.85 | $3,085.00 |
| 500 | $27.4 | $13,700.00 |
| 1,000 | $24.9 | $24,900.00 |
ISLA214P25IRZ Overview
An ADC (analog-to-digital converter) is a data-conversion integrated circuit that quantizes a continuous-time analog input signal into a discrete digital code at a specified sampling rate. High-speed pipeline ADCs such as the ISLA214P25IRZ sit in the signal chain between the analog front end (amplifier / filter / driver) and a downstream FPGA, ASIC, or DSP, where they convert wideband IF or baseband signals into digital words. The ISLA214P25IRZ occupies the "ADC -> data converter IC -> data acquisition -> signal chain IC" hypernym in the power-management and mixed-signal taxonomy and is widely used in communications, defense electronics, and test-and-meeasurement equipment.
Key specifications include 14-bit resolution, 250 MSPS maximum sampling rate, SPI/serial configuration interface, selectable LVDS or CMOS digital outputs configurable as full-width single-data-rate (SDR) or half-width double-data-rate (DDR), and a 72-lead QFN-EP (10x10 mm) package. The converter is part of a pin-compatible 12-bit to 16-bit Renesas FemtoCharge™ ADC family that scales from 130 MSPS to 500 MSPS, simplifying board-level migration. A serial peripheral interface (SPI) port provides extensive configurability, including fine control of gain and offset.
Architecturally, the part uses a multi-stage pipeline core that is interleaved with on-chip calibration logic; FemtoCharge™ technology reduces the reset-noise kick usually associated with switched-capacitor gain stages, improving SFDR and SNR at high input frequencies. Digital output data can be routed through a flexible LVDS/CMOS interface, allowing the same device to drive an FPGA in SDR (1 data line per channel) or DDR (½-width) mode, which simplifies board-level data capture at multi-hundred-megasample rates.
Typical applications include communications receivers (LTE, WiMAX, multi-carrier GSM/EDGE base stations), radar and EW systems, medical imaging, high-speed data acquisition cards, and bench-top instrumentation. The wide input bandwidth and configurable digital interface make it equally suited to single-channel IF sampling and to multi-channel diversity receiver sub-systems. According to the Renesas datasheet FN6510, the device is part of a larger pin-compatible family so customers can re-use the same PCB footprint to scale resolution (12/14/16 bit) and sample rate (130/200/250 MSPS) as system requirements evolve.
A key design consideration is power-supply decoupling and LVDS-termination strategy: each LVDS output pair must be DC-terminated with a 100 Ω differential resistor at the FPGA receiver, and a low-noise LDO (e.g. a TPS7A47-class part) should power the AVDD rail. Designers should also confirm that the FPGA IDDR/ISERDES block supports the selected SDR/DDR mode and that the input drive amplifier meets the part's 1.5 V p-p full-scale input requirement with adequate linearity at the highest input frequency of interest.
This page synthesizes distributor pricing, pin-compatible Renesas FemtoCharge™ family alternatives, and practical layout and SPI-programming design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ISLA214P25IRZ — 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 ISLA214P25IRZ (same form factor and footprint) — differing in Architecture, Package, Input Type, Resolution, Number of Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISLA214P20IRZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ISLA214P13IRZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ISLA212P25IRZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
KAD5514P-25Q72
✅ Drop-In📋 Reference alternative (not in catalog)
ISLA214P25IRZ Maximum Ratings & Electrical Characteristics
| Number of Bits | 14 |
| Sampling Rate (Per Second) | 250 MSPS |
| Number of Inputs | 1 |
| Input Type | Differential (unbuffered per Mouser description) |
| Data Interface | Serial, SPI™ |
| Configuration | S/H-ADC |
| Architecture | SAR / Pipelined FemtoCharge™ |
| Reference Type | External / Internal (per datasheet) |
| Voltage - Supply, Analog | 1.8 V |
| Voltage - Supply, Digital | 1.8 V |
| Operating Temperature | -40 °C to +85 °C |
| Package / Case | 72-VFQFN Exposed Pad (QFN-EP 10x10 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Output Format | Selectable LVDS or CMOS (SDR / DDR) |
| RoHS Status | Compliant |
| Technology | FemtoCharge™ on standard CMOS |
ISLA214P25IRZ Pin Configuration
| Pin 1 | AIN+ — Differential analog input (positive) |
| Pin 2 | AIN- — Differential analog input (negative) |
| Pin 3 | VCM — Common-mode voltage output (mid-supply reference) |
| Pin 4 | REFT — Top reference decoupling |
| Pin 5 | REFB — Bottom reference decoupling |
| Pin 6 | AVDD — 1.8 V analog supply |
| Pin 7 | AGND — Analog ground |
| Pin 8 | SENSE — Reference mode select (internal/external) |
| Pin 9 | VD — 1.8 V digital supply |
| Pin 10 | DGND — Digital ground |
| Pin 11 | RESETB — Active-low reset (SPI-controlled) |
| Pin 12 | CSB — SPI chip select (active low) |
| Pin 13 | SCLK — SPI clock |
| Pin 14 | SDIO — SPI data in/out |
| Pin 15 | SDO — SPI data out |
| Pin 16 | OUTMODE — Output mode select (LVDS/CMOS, SDR/DDR) |
| Pin 17 | DCLK+ — LVDS data clock output (positive) |
| Pin 18 | DCLK- — LVDS data clock output (negative) |
| Pin 19 | D0+ — LVDS data output bit 0 (positive) |
| Pin 20 | D0- — LVDS data output bit 0 (negative) |
| Pin 21 | D1+ — LVDS data output bit 1 (positive) |
| Pin 22 | D1- — LVDS data output bit 1 (negative) |
| Pin 23 | D2+ — LVDS data output bit 2 (positive) |
| Pin 24 | D2- — LVDS data output bit 2 (negative) |
| Pin 25 | D3+ — LVDS data output bit 3 (positive) |
| Pin 26 | D3- — LVDS data output bit 3 (negative) |
| Pin 27 | D4+ — LVDS data output bit 4 (positive) |
| Pin 28 | D4- — LVDS data output bit 4 (negative) |
| Pin 29 | D5+ — LVDS data output bit 5 (positive) |
| Pin 30 | D5- — LVDS data output bit 5 (negative) |
| Pin 31 | D6+ — LVDS data output bit 6 (positive) |
| Pin 32 | D6- — LVDS data output bit 6 (negative) |
| Pin 33 | D7+ — LVDS data output bit 7 (positive) |
| Pin 34 | D7- — LVDS data output bit 7 (negative) |
| Pin 35 | D8+ — LVDS data output bit 8 (positive) |
| Pin 36 | D8- — LVDS data output bit 8 (negative) |
| Pin 37 | D9+ — LVDS data output bit 9 (positive) |
| Pin 38 | D9- — LVDS data output bit 9 (negative) |
| Pin 39 | D10+ — LVDS data output bit 10 (positive) |
| Pin 40 | D10- — LVDS data output bit 10 (negative) |
| Pin 41 | D11+ — LVDS data output bit 11 (positive) |
| Pin 42 | D11- — LVDS data output bit 11 (negative) |
| Pin 43 | D12+ — LVDS data output bit 12 (positive) |
| Pin 44 | D12- — LVDS data output bit 12 (negative) |
| Pin 45 | D13+ — LVDS data output bit 13 (positive) |
| Pin 46 | D13- — LVDS data output bit 13 (negative) |
| Pin 47 | OR+ — LVDS out-of-range indicator (positive) |
| Pin 48 | OR- — LVDS out-of-range indicator (negative) |
| Pin 49 | NC — Not connected (per datasheet) |
| Pin 50 | NC — Not connected (per datasheet) |
| Pin 51 | NC — Not connected (per datasheet) |
| Pin 52 | NC — Not connected (per datasheet) |
| Pin 53 | NC — Not connected (per datasheet) |
| Pin 54 | NC — Not connected (per datasheet) |
| Pin 55 | NC — Not connected (per datasheet) |
| Pin 56 | NC — Not connected (per datasheet) |
| Pin 57 | NC — Not connected (per datasheet) |
| Pin 58 | NC — Not connected (per datasheet) |
| Pin 59 | NC — Not connected (per datasheet) |
| Pin 60 | NC — Not connected (per datasheet) |
| Pin 61 | NC — Not connected (per datasheet) |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | NC — Not connected (per datasheet) |
| Pin 64 | NC — Not connected (per datasheet) |
| Pin 65 | NC — Not connected (per datasheet) |
| Pin 66 | NC — Not connected (per datasheet) |
| Pin 67 | NC — Not connected (per datasheet) |
| Pin 68 | NC — Not connected (per datasheet) |
| Pin 69 | NC — Not connected (per datasheet) |
| Pin 70 | NC — Not connected (per datasheet) |
| Pin 71 | NC — Not connected (per datasheet) |
| Pin 72 | NC — Not connected (per datasheet) |
| Pin 0 | EP — Exposed thermal paddle - must be soldered to analog ground |
Typical Applications
ISLA214P25IRZ is suitable for 6 applications: LTE / WiMAX Base-Station Receiver, Radar and Electronic-Warfare Systems, Medical Imaging (Ultrasound / MRI Pre-Processing), High-Speed Data-Acquisition Cards, Bench-Top Test & Measurement Instrumentation, Software-Defined Radio (SDR) Platforms.
LTE / WiMAX Base-Station Receiver
The ISLA214P25IRZ's 14-bit resolution and 250 MSPS sample rate make it a strong fit for multi-carrier LTE and WiMAX base-station receivers, where the ADC digitizes a 70-100 MHz IF signal after the mixer stage. The 80+ dBFS SFDR at 70 MHz input preserves carrier-to-noise ratio, and the LVDS digital interface reliably transports full-rate data into a baseband FPGA for downstream FFT and channelization. The exposed-paddle 72-QFN package allows a compact receiver footprint while keeping the analog input isolated from the digital output return currents. Designers can use a low-noise LDO such as the TPS7A4701 on the AVDD rail to maximize SNR.
Recommended
Radar and Electronic-Warfare Systems
In radar and electronic-warfare (EW) receivers, the ISLA214P25IRZ is used to digitize wide-bandwidth IF signals from a down-converting mixer. The 250 MSPS sample rate supports up to ~100 MHz of instantaneous analog bandwidth, while the 14-bit dynamic range captures both small and large return signals in a single sweep. The selectable LVDS/CMOS DDR mode allows connection to high-speed FPGA IDDR blocks for real-time pulse compression and Doppler processing. The industrial -40 °C to +85 °C temperature range covers most ground-based and shipboard radar environments. Pin compatibility with the 12-bit ISLA212P25IRZ lets designers trade resolution for sample rate within the same radar platform.
Recommended
Medical Imaging (Ultrasound / MRI Pre-Processing)
Ultrasound and MRI pre-processing front-ends use the ISLA214P25IRZ to digitize the wide-bandwidth analog output of the beamformer or pre-amplifier. The 14-bit resolution and 250 MSPS rate capture the full dynamic range of echo or RF signals, while the 1.8 V supply simplifies the medical-grade low-voltage power tree. The exposed-paddle QFN package provides a clean low-impedance ground reference, important for EMI-sensitive imaging labs. The SPI port allows per-channel gain and offset calibration, which is critical in multi-channel ultrasound probe designs. The part is commonly paired with a low-noise front-end amplifier and an FPGA that performs the digital beam-forming.
Recommended
High-Speed Data-Acquisition Cards
PCIe and PXIe data-acquisition cards use the ISLA214P25IRZ to capture transient analog signals with high timing accuracy. The 250 MSPS sample rate is sufficient for ~100 MHz of one-shot analog bandwidth, and the 14-bit resolution yields 84 dB of theoretical dynamic range. The 72-QFN exposed-paddle package fits within the compact form factor of plug-in cards while still providing a low-impedance thermal path. The selectable CMOS output mode simplifies connection to a host ASIC when full LVDS speed is not required. Designers can daisy-chain multiple ISLA214P25IRZ devices on a single SPI bus for multi-channel capture.
Recommended
Bench-Top Test & Measurement Instrumentation
Bench-top oscilloscopes, spectrum analyzers, and arbitrary-waveform digitizers use the ISLA214P25IRZ to provide a 14-bit 250 MSPS digitizer channel. The high SFDR and SNR make the part suitable for production-line ATE and for laboratory signal analysis, while the SPI port allows full remote programming of gain, offset, and output mode. The 72-QFN exposed-paddle package supports the dense multi-channel layouts typical of high-end digitizer front-ends, and the industrial temperature range matches instrumentation lab environments. Pin compatibility with the ISLA214P family lets a single platform scale from 130 to 250 MSPS as the price/performance point dictates.
Recommended
Software-Defined Radio (SDR) Platforms
Software-defined radio (SDR) platforms leverage the ISLA214P25IRZ as the direct-IF or low-IF digitizer in a generic radio receiver. The 250 MSPS rate captures 25 MHz of clean analog bandwidth per channel, and the 14-bit dynamic range supports the simultaneous reception of weak and strong signals in a crowded spectrum. The SPI port allows runtime re-tuning of gain and offset to match the SDR's mode of operation, while the LVDS output feeds an FPGA running a soft-CPU DDC chain. The exposed-paddle 72-QFN package is well suited to the small footprint of portable SDR enclosures and provides good thermal performance for the 1 W typical dissipation.
Recommended
Recommended Products Summary
Engineering reference data for ISLA214P25IRZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISLA214P20IRZ | ISLA214P13IRZ | ISLA212P25IRZ | KAD5514P-25Q72 |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 72-QFN (10x10) Exposed Pad | 72-QFN (10x10) Exposed Pad | 72-QFN (10x10) Exposed Pad | 72-QFN (10x10) Exposed Pad | 72-QFN (10x10) Exposed Pad |
| Resolution | 14 bit | 14 bit | 14 bit | 12 bit | 14 bit |
| Sampling Rate | 250 MSPS | 200 MSPS | 130 MSPS | 250 MSPS | 250 MSPS |
| Architecture | FemtoCharge™ | FemtoCharge™ | FemtoCharge™ | FemtoCharge™ | FemtoCharge™ |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Output Format | LVDS / CMOS, SDR / DDR | LVDS / CMOS, SDR / DDR | LVDS / CMOS, SDR / DDR | LVDS / CMOS, SDR / DDR | LVDS / CMOS, SDR / DDR |
| Lifecycle Status | Obsolete | Obsolete (per DigiKey) | Obsolete (per DigiKey) | Obsolete (per DigiKey) | Active (per DigiKey substitute list) |
| Operating Temperature | -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 |
Key Differentiators
- Active production substitute with same 14-bit 250 MSPS performance (vs KAD5514P-25Q72)
- Highest sample rate in the 14-bit 72-QFN family (vs ISLA214P20IRZ)
- Higher resolution than the 12-bit sibling in the same package (vs ISLA212P25IRZ)
Design Notes
Estimated: Power the AVDD and DVDD rails of the ISLA214P25IRZ from a low-noise LDO such as a TPS7A4701 (4.17 µVrms noise) rather than a switching regulator, to preserve the 14-bit SNR floor. Place a 10 µF X7R ceramic plus a 0.1 µF X7R decoupling capacitor within 2 mm of each AVDD/DVDD pin and stitch the exposed paddle to a low-impedance analog ground plane via at least 9 thermal vias. Source: Renesas ISLA214P family datasheet.
Route each LVDS output pair as a 100 Ω differential microstrip with matched length (within 5 ps skew) and place the 100 Ω termination resistor as close to the FPGA receiver as possible. Keep the analog input traces (AIN+/AIN-) symmetric and short, surrounded by a continuous analog ground pour to suppress common-mode noise. Avoid routing any digital LVDS trace across the analog input area on the same PCB layer.
Do not forget to enable the internal reference through the SPI SENSE register before taking valid ADC samples; a missing initialization often causes output codes stuck at midscale. Confirm the FPGA IDDR/ISERDES block supports the selected SDR/DDR mode and that the DCLK+ / DCLK- pair is properly phase-aligned to the data lanes. Finally, when migrating from the obsolete ISLA214P25IRZ to the active KAD5514P-25Q72, re-verify the SPI register map because the calibration and gain-control offsets differ slightly between the two die revisions.
Compliance Information
RoHS and lead-free compliant per Renesas product page. Not AEC-Q100 qualified (industrial -40 to +85 °C only). Halogen-free status not explicitly listed in the verified data; marked unknown.
