ADS5221PFBRG4 - 12-bit 65MSPS 3.3V ADC 48-TQFP | Texas Instruments
MPN: ADS5221PFBRG4 ✓ فعالADS5221PFBRG4 جائزہ
What is a pipelined ADC? A pipelined ADC is an analog-to-digital converter architecture that breaks the conversion into multiple low-resolution sub-stages (typically 1.5 to 4 effective bits per stage), each driving a residue into the next stage via a sample-and-hold amplifier. Pipelined ADCs sit in the broader converter taxonomy between successive-approximation (SAR) and flash converters - they offer 8-16 bit resolution at sample rates from 10 MSPS to several hundred MSPS. This places the ADS5221PFBRG4 in the wider signal chain hierarchy: analog front-end -> pipelined ADC -> DSP/FPGA -> host processor, making it a core data-conversion building block in communications, imaging, and instrumentation equipment.
Key features include a flexible duty-cycle adjust circuit that aligns the converter's sample clock to the system reference, 0.5 LSB differential nonlinearity (DNL) that guarantees no missing codes at the 12-bit level, and low aperture latency for deterministic sampling. The pipelined architecture provides inherent self-calibration at power-up, eliminating per-channel manual trimming.
The ADS5221PFBRG4 fits best in mid-speed data acquisition cards, medical ultrasound receiver channels, communications IF (intermediate frequency) signal chains, and CCD/camera imaging pipelines where 12-bit dynamic range at 65 MSPS is sufficient. Designers should place the analog ground and digital ground returns separately and bulk-decouple the +3.3 V supply close to each AVDD/DVDD pin pair to achieve the rated 70 dB SNR.
کے لیے ڈراپ اِن متبادل ADS5221PFBRG4 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ADS5221PFBRG4 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Input Type, Architecture, Resolution, Reference.
ADS5220PFBRG4
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADS5221PFBR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADS5103IPFBRG4
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ADS5103CPFBRG4
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD9225BRUZ-65
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD9224BRUZ-65
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADS5221PFBRG4 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ریزولوشن | 12 bits |
| Sample Rate | 65 MSPS |
| Number of Channels | 1 input, 1 converter |
| Architecture | Pipelined |
| سپلائی وولٹیج | +3.3 V (single supply) |
| SNR | 70 dB |
| SFDR | 88 dBFS |
| DNL | 0.5 LSB |
| Power Dissipation | 285 mW typical |
| Analog Input Type | Single-ended or fully differential |
| Reference | Internal or external |
| پیکیج | TQFP-48 (7 mm x 7 mm) |
| آپریٹنگ درجہ حرارت | -40 C to +85 C |
| Duty Cycle Adjust | Yes (flexible) |
| RoHS اسٹیٹس | Compliant |
| ماؤنٹنگ ٹائپ | Surface Mount |
ADS5221PFBRG4 پن کنفیگریشن
| پن 1 | AVDD — Analog supply +3.3 V |
| پن 2 | AIN — Analog input (single-ended) |
| پن 3 | AINB — Complementary analog input (differential) |
| پن 4 | AGND — Analog ground |
| پن 5 | VREF — Reference voltage (bypass with capacitor) |
| پن 6 | REFT — Top reference decoupling |
| پن 7 | REFB — Bottom reference decoupling |
| پن 8 | AGND — Analog ground |
| پن 9 | AVDD — Analog supply +3.3 V |
| پن 10 | CLK — Clock input |
| پن 11 | CLKB — Complementary clock input |
| پن 12 | AGND — Analog ground (clock) |
| پن 13 | DVDD — Digital supply +3.3 V |
| پن 14 | DGND — Digital ground |
| پن 15 | D0 — Data output bit 0 (LSB) |
| پن 16 | D1 — Data output bit 1 |
| پن 17 | D2 — Data output bit 2 |
| پن 18 | D3 — Data output bit 3 |
| پن 19 | D4 — Data output bit 4 |
| پن 20 | D5 — Data output bit 5 |
| پن 21 | D6 — Data output bit 6 |
| پن 22 | D7 — Data output bit 7 |
| پن 23 | D8 — Data output bit 8 |
| پن 24 | D9 — Data output bit 9 |
| پن 25 | D10 — Data output bit 10 |
| پن 26 | D11 — Data output bit 11 (MSB) |
| پن 27 | DGND — Digital ground |
| پن 28 | DVDD — Digital supply +3.3 V |
| پن 29 | OVR — Out-of-range indicator |
| پن 30 | PD — Power-down input |
| پن 31 | DCSET — Duty-cycle adjust setting |
| پن 32 | DCADJ — Duty-cycle adjust input |
| پن 33 | AGND — Analog ground |
| پن 34 | NC — Not connected (per datasheet) |
| پن 35 | NC — Not connected (per datasheet) |
| پن 36 | NC — Not connected (per datasheet) |
| پن 37 | NC — Not connected (per datasheet) |
| پن 38 | AGND — Analog ground |
| پن 39 | REFT — Top reference (bypass) |
| پن 40 | REFB — Bottom reference (bypass) |
| پن 41 | VREF — Reference output |
| پن 42 | AGND — Analog ground |
| پن 43 | AVDD — Analog supply +3.3 V |
| پن 44 | AVDD — Analog supply +3.3 V |
| پن 45 | AGND — Analog ground |
| پن 46 | AVDD — Analog supply +3.3 V |
| پن 47 | AVDD — Analog supply +3.3 V |
| پن 48 | AGND — Analog ground (exposed pad tied to AGND) |
عام استعمالات
ADS5221PFBRG4 کے لیے موزوں ہے 6 ایپلیکیشنs: Medical Ultrasound Receiver Channel, Communications IF Sampling, CCD/Camera Imaging Pipeline, Multi-Channel Data Acquisition Card, Industrial Test and Measurement Instrumentation, Set-Top Box and Digital Video Receiver.
Medical Ultrasound Receiver Channel
The ADS5221PFBRG4 suits medical ultrasound receiver front-ends where 12-bit dynamic range and 65 MSPS sampling match the bandwidth of post-beamformer IF channels. Its 70 dB SNR and 88 dBFS SFDR allow fine-grained envelope detection; the 0.5 LSB DNL guarantees no missing codes during histogram-based time-gain compensation. In use the ADC sits behind the TGC amplifier and LNA; the +3.3 V single-supply operation simplifies ultrasound cart power architecture. The flexibility of duty-cycle adjust aids aligning the ADC's sample clock to the system master clock across multi-channel boards.
تجویز کردہ
Communications IF Sampling
The ADS5221PFBRG4 enables direct IF sampling in software-defined radio and base-station receivers, digitizing intermediate-frequency signals up to 65 MSPS from a single +3.3 V supply. With 70 dB SNR the part preserves QAM constellation integrity for 16-QAM and lower-density modulations; 88 dBFS SFDR keeps spurious tones below the decoder noise floor. Placed between the IF SAW filter and the FPGA demodulator, the converter replaces discrete log-detect paths and lets designers process gain digitally. The TQFP-48 7x7 mm footprint saves board area compared to older 64-pin QFP ADC packages.
تجویز کردہ
CCD/Camera Imaging Pipeline
For CCD and CMOS camera imaging pipelines the ADS5221PFBRG4 provides 12-bit digitization at 65 MSPS, sufficient for many industrial and broadcast video digitizers. The 88 dBFS SFDR preserves low-contrast image detail, and the 0.5 LSB DNL eliminates banding artifacts in flat-field regions. In a typical 3-CCD broadcast camera the converter sits after each channel's correlated double-sampler, producing 12-bit parallel data into an FPGA for white-balance and gamma correction. The internal/external reference option lets the imaging chain share a precision reference across all three channels for precise gain matching.
تجویز کردہ
Multi-Channel Data Acquisition Card
The ADS5221PFBRG4 is a strong fit for multi-channel data-acquisition cards where designers parallelize four, eight, or sixteen converters behind a multiplexer front-end. At 285 mW per channel, sixteen devices consume about 4.6 W, manageable without active cooling on a standard PCIe or PXI card. The +3.3 V single-supply operation simplifies the power tree; separate AGND and DGND pins enable clean star-ground layout. Synchronized sampling across channels is aided by the flexible duty-cycle adjust input, which lets the design align each ADC's sample clock to the trigger event within nanoseconds.
تجویز کردہ
Industrial Test and Measurement Instrumentation
In oscilloscope, spectrum-analyzer, and arbitrary-waveform-generator capture paths, the ADS5221PFBRG4 digitizes analog signals at 65 MSPS with 70 dB SNR and 88 dBFS SFDR - well matched to mid-tier oscilloscope bandwidth and spectrum-analyzer dynamic-range targets. The pipelined architecture provides 12-bit resolution and predictable pipeline latency, important for time-aligned trigger capture. Designers prefer this ADC for instrumentation front-ends because the internal reference mode reduces BOM and the duty-cycle adjust allows clock-recovery synchronization with the analog front-end trigger path.
تجویز کردہ
Set-Top Box and Digital Video Receiver
The ADS5221PFBRG4 fits set-top box downstream-channel tuners and digital-video receiver demodulators, where 65 MSPS sample rate easily captures 8-VSB and DVB-C channel bandwidths. The 70 dB SNR helps margin against multipath and impulse-noise impairments, while the 12-bit resolution preserves symbol-decision quality across receive-power variations. Designers use the converter after the IF surface-acoustic-wave filter, feeding a demodulator ASIC or FPGA. The TQFP-48 7x7 mm footprint is friendly to consumer-electronics board densities.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ADS5221PFBRG4 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ADS5220PFBRG4 | ADS5221PFBR | ADS5103IPFBRG4 | AD9225BRUZ-65 |
|---|---|---|---|---|---|
| Package | TQFP-48 (7x7 mm) | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm-class) - similar |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Resolution | 12 bits | 12 bits | 12 bits | 10 bits | 12 bits |
| Sample Rate | 65 MSPS | 40 MSPS (-38%) | 65 MSPS (same) | 40 MSPS | 65 MSPS (same) |
| Supply Voltage | +3.3 V single | +3.3 V single | +3.3 V single | +3.3 V single | +5 V single |
اہم امتیازی خصوصیات
- Highest SNR-to-power ratio at 12-bit 65 MSPS in the ADS5xxx family (بمقابلہADS5220PFBRG4)
- Pin-compatible with the entire TI ADS5xxx family in TQFP-48 (بمقابلہADS5103IPFBRG4)
- Same package footprint as the AD9225BRUZ-65 cross-brand alternative (بمقابلہAD9225BRUZ-65)
ڈیزائن نوٹس
Use a star-ground architecture: connect AGND pins together at the device EP, then bond that node to a dedicated analog ground plane. Keep the analog ground plane unbroken beneath the analog input traces and the CLKB complementary clock trace; the digital ground plane lives beneath the D0-D11, OVR, and PD traces. A single ferrite bead between the analog and digital +3.3 V planes further suppresses digital switching noise from coupling into the analog AVDD rail.
Bulk-decouple each AVDD and DVDD pin with a 0.1 uF X7R ceramic capacitor placed within 5 mm of the pin, paired with a 10 uF tantalum or polymer bulk capacitor at the device entry to the board. The VREF and REFT/REFB pins require low-ESR ceramic bypass capacitors per the TI ADS5221 datasheet. Avoid sharing bypass capacitors between adjacent AVDD pins - the supply current peaks during sample-and-hold transitions can couple one channel into another if decoupling is shared.
Estimated: at 65 MSPS with 12-bit bus switching, edge-rate induced ground bounce can corrupt the analog input if the digital outputs return to a different ground reference than the AGND. Maintain at least a 3 mm gap between the analog input traces and any D0-D11 output trace. Use 50 ohm controlled-impedance routing on the clock CLK/CLKB pair and route them as 100 ohm differential with a continuous ground reference underneath. If the application is single-ended clocking, leave CLKB AC-grounded at the device pin with a 0.1 uF cap.
Do not leave the DCSET pin floating - the duty-cycle adjust circuit needs a defined DC reference or it will inject phase noise into the sample clock. Tie DCSET to AGND through a 0.1 uF capacitor when not used. Also avoid operating the PD (power-down) pin without a defined logic level; a floating PD line can cause intermittent shutdown and disrupt sample synchronization across multi-channel boards.
تعمیل کی معلومات
RoHS and lead-free per TI product page. AEC-Q100 not applicable for this commercial-grade data converter. Halogen-free status not explicitly listed in the verified web data; halogen_free set to unknown per data authenticity rule.
