XRD87L75AIU - 8-Bit 10MSPS ADC, 3.3V, SSOP-20 | MaxLinear
MPN: XRD87L75AIU ✓ פעילXRD87L75AIU סקירה
What is an 8-bit ADC? An 8-bit analog-to-digital converter is a data-acquisition component that quantizes an analog input signal into 256 discrete digital codes (2^8). ADC components sit in the signal chain hierarchy: ADC -> data converter -> data acquisition IC -> mixed-signal semiconductor. They are the bridge between the analog sensor/transducer domain and the digital processing domain, enabling microcontrollers, FPGAs, and DSPs to interpret real-world signals.
The XRD87L75AIU uses a flash (parallel) conversion architecture, which delivers single-cycle conversion latency ideal for high-speed digital video, CCD imaging front-ends, and digital oscilloscope front-ends. The internal sample-and-hold stabilizes the input during the flash compare-network settling time, supporting full-scale inputs up to VDD. The low-power CMOS implementation (typical 25 mW) makes the part suitable for portable and power-constrained designs.
The 3.3 V single-supply operation simplifies interface to modern CMOS ASICs, FPGAs, and microcontrollers without level shifters. The 20-SSOP package occupies a small PCB footprint while providing 1 analog input, digital outputs, and reference/decoupling pins in a standard pinout shared with related XRD87000 family members.
Typical applications include digital video processing, CCD imaging front-ends, digital oscilloscopes, QAM demodulators in set-top boxes, and portable instrumentation. The single-cycle flash latency makes the converter well suited for digitizing high-bandwidth IF signals and video-rate analog inputs in cost-sensitive systems.
When designing with this part, place a 0.1 µF decoupling capacitor within 5 mm of the VDD pin and minimize the analog-input trace length to preserve sample-rate accuracy. The reference pin requires a low-impedance source (typical 1 V to VDD); avoid sharing this reference with high-current digital loads to prevent code-edge jitter.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
חלופות תחליף ישיר עבור XRD87L75AIU — 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 XRD87L75AIU (אותו גורם צורה וטביעת רגל) — שונים ב Package, Resolution, Mounting Type, Digital Interface, RoHS Status.
XRD87L75AIU-F
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
XRD87L85AID
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
XRD87L75AID
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
XRD87L75AIP-F
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MAX1156AEUP+
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MAX1156BEUP+
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←XRD87L75AIU דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 8 bits |
| קצב דגימה | 10 MSPS |
| Number of Input Channels | 1 |
| Architecture | Flash (with internal S/H) |
| Supply Voltage (Single) | 3.3 V |
| Analog Input Voltage Range | 0 V to VDD |
| Reference Voltage Range | 1 V to VDD |
| Power Dissipation (typ) | 25 mW (excluding reference) |
| Digital Interface | Parallel CMOS outputs |
| Technology | Low-voltage CMOS, latch-up free |
| מארז | 20-SSOP |
| סוג הרכבה | Surface Mount |
| Latch-Up | Latch-Up Free |
תצורת פינים של XRD87L75AIU
| פין 1 | VDD — 3.3V analog/digital supply |
| פין 2 | GND — Analog ground |
| פין 3 | VREF — Reference voltage input (1V to VDD) |
| פין 4 | AIN — Analog input (0V to VDD) |
| פין 5 | NC — Not connected (per datasheet) |
| פין 6 | D0 — Digital output bit 0 (LSB) |
| פין 7 | D1 — Digital output bit 1 |
| פין 8 | D2 — Digital output bit 2 |
| פין 9 | D3 — Digital output bit 3 |
| פין 10 | D4 — Digital output bit 4 |
| פין 11 | D5 — Digital output bit 5 |
| פין 12 | D6 — Digital output bit 6 |
| פין 13 | D7 — Digital output bit 7 (MSB) |
| פין 14 | OE — Output enable (active low) |
| פין 15 | CLK — Conversion clock input |
| פין 16 | GND — Digital ground |
| פין 17 | NC — Not connected (per datasheet) |
| פין 18 | NC — Not connected (per datasheet) |
| פין 19 | NC — Not connected (per datasheet) |
| פין 20 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
XRD87L75AIU מתאים עבור 6 יישוםs: Digital Video Processing, CCD Imaging Front-End, QAM Demodulator (Set-Top Box IF), Digital Oscilloscope Front-End, Portable Instrumentation, Industrial Sensor Digitizing.
Digital Video Processing
The XRD87L75AIU digitizes composite or component analog video streams in cost-sensitive digital video systems where 8-bit resolution is sufficient. Its 10 MSPS flash architecture captures full NTSC/PAL video bandwidth in a single conversion cycle, eliminating the latency of successive-approximation ADCs. The 3.3 V single-supply operation keeps power dissipation at a typical 25 mW while the 20-SSOP package fits in space-constrained set-top box and video processor PCBs.
מומלץ
CCD Imaging Front-End
In CCD camera front-ends, the XRD87L75AIU converts CCD analog output voltages to 8-bit digital codes at 10 MSPS. The flash converter's single-cycle latency preserves pixel timing and avoids motion artifacts at video frame rates. Internal sample-and-hold stabilizes the input during flash reference settling, while the 3.3 V supply aligns with modern CMOS image processor rails. This combination suits 1-3 megapixel camera modules where moderate resolution and low cost are priorities.
מומלץ
QAM Demodulator (Set-Top Box IF)
The XRD87L75AIU samples the 44 MHz IF output of a QAM tuner in cable set-top boxes, digitizing the IF for downstream digital demodulation. Its 10 MSPS sampling rate captures multiple IF cycles per QAM symbol, and the 8-bit flash architecture provides the low-latency conversion required for symbol-rate synchronous sampling. The 25 mW power dissipation keeps tuner front-end thermal budgets modest in enclosed set-top enclosures.
מומלץ
Digital Oscilloscope Front-End
Low-cost digital oscilloscopes and PC-based scope front-ends use the XRD87L75AIU to digitize bandwidth-limited analog waveforms at 10 MSPS. The flash architecture delivers single-cycle update rates essential for accurate edge triggering and glitch capture at audio and video bandwidths. The 20-SSOP package supports compact handheld or USB-form-factor designs while delivering 8-bit vertical resolution adequate for general-purpose measurements.
מומלץ
Portable Instrumentation
Battery-powered measurement instruments use the XRD87L75AIU for signal acquisition because of its 25 mW typical power consumption and 3.3 V single-supply operation. The flash ADC enables single-shot burst capture for transient analysis on handheld field instruments. Reference flexibility (1 V to VDD) supports battery-stack voltage monitoring and transducer bridge digitizing where full-scale input scales vary by application.
מומלץ
Industrial Sensor Digitizing
The XRD87L75AIU converts analog sensor outputs (temperature, pressure, vibration transducers) to digital form for industrial monitoring. With 0-VDD input range, the part directly interfaces with sensor bridges powered from the same 3.3 V rail without signal conditioning. The flash architecture captures transient events at the 10 MSPS rate for vibration or motor-monitoring systems where single-cycle latency is required to preserve edge timing.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור XRD87L75AIU — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | XRD87L75AIU-F | XRD87L85AID | XRD87L75AID | XRD87L75AIP-F | MAX1156AEUP | MAX1156BEUP |
|---|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear | Analog Devices | Analog Devices |
| Resolution | 8 bits | 8 bits | 10 bits | 8 bits | 8 bits | 8 bits | 8 bits |
| Sampling Rate | 10 MSPS | 10 MSPS | 65 MSPS | 10 MSPS | 10 MSPS | 10 MSPS | 10 MSPS |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Power Dissipation (typ) | 25 mW | 25 mW | 60 mW | 25 mW | 25 mW | 35 mW | 35 mW |
| Architecture | Flash | Flash | Flash | Flash | Flash | Flash | Flash |
| Internal S/H | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Latch-Up Free | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| RoHS / Lead-Free | Non-RoHS (SnPb) | RoHS / Pb-free | RoHS / Pb-free | RoHS / Pb-free | RoHS / Pb-free | RoHS / Pb-free | RoHS / Pb-free |
מבדילים עיקריים
- Lower typical power dissipation than competing flash ADCs (לעומתMAX1156AEUP)
- Drop-in upgrade path to higher resolution and bandwidth (לעומתXRD87L85AID)
- RoHS-compliant lead-free finish available in same footprint (לעומתXRD87L75AIU-F)
הערות תכנון
Place a 0.1 µF low-ESR ceramic decoupling capacitor within 5 mm of the VDD pin (pin 1) and a bulk 10 µF tantalum or ceramic capacitor on the same supply node. The XRD87L75AIU draws ~25 mW typical under load, but transient current spikes during flash comparator switching require a stiff local supply to prevent reference droop that would otherwise create code-edge jitter.
Route the analog input (pin 4) with a guarded, impedance-controlled trace and minimize trace length to avoid capacitive loading above the datasheet's recommended maximum. Add a series ferrite bead or small resistor (10-50 Ω) on the AIN pin to dampen clock-feedthrough coupling from the internal flash comparators. This preserves sample-rate integrity at the 10 MSPS maximum.
Do not share the reference pin (VREF, pin 3) with high-current digital loads or route it near digital switching signals. Drive VREF from a low-impedance buffer op-amp or dedicated reference IC. Sharing VREF with digital outputs can cause code-edge jitter because digital switching current modulates the reference voltage seen by the flash compare network.
Use a continuous ground plane on layer 2 (or bottom layer for single-layer designs) and stitch analog and digital grounds at a single point near the IC's GND pins (2 and 16). This prevents digital switching return currents from flowing through the analog ground reference, which would manifest as conversion noise and ADC code instability at high sampling rates.
Estimated: at VDD=3.3 V and 25 mW typical dissipation, the SSOP-20 package's thermal resistance (theta_JA ~120 C/W on a 1 oz 1 sq-in copper pour) yields a junction temperature rise of ~3 C above ambient - well within operating limits. Even at maximum ratings, the part presents no thermal management challenge; design attention should focus on signal integrity and decoupling instead.
מידע על תאימות
RoHS, REACH, halogen-free and conflict-mineral compliance not stated in provided web data. Lead-free variant XRD87L75AIU-F is recommended for RoHS-compliant assemblies.
