ADS5521IPAPR - 12-Bit 105MSPS ADC, 64-HTQFP | Texas Instruments
Teilenummer: ADS5521IPAPR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.2 | $252,00 |
| 100 | $22.4 | $2.240,00 |
| 500 | $19.85 | $9.925,00 |
| 1.000 | $17.95 | $17.950,00 |
| 2.500 | $16.1 | $40.250,00 |
ADS5521IPAPR Übersicht
An ADC (analog-to-digital converter) is a data-acquisition integrated circuit that samples a continuous-time analog waveform and produces a discrete-time digital code proportional to the input amplitude. Pipelined ADCs such as the ADS5521IPAPR use a multi-stage architecture with per-stage residue amplification, achieving high sample rates (here 105 MSPS) at moderate resolution (12 bits) with low latency and excellent dynamic performance. They sit in the data-converter hierarchy as: ADC -> Nyquist-rate ADC -> pipelined ADC -> data acquisition IC -> signal chain semiconductor.
Key specifications include 12-bit resolution, 105 MSPS maximum sampling rate, 2.3 VPP differential full-scale input range, high SNR and high SFDR at 100 MHz analog input, internal voltage reference, CMOS-compatible parallel digital output, single 3.3V analog supply, and total power dissipation of 564 mW (analog section 571 mW per the full datasheet).
The architecture combines an input buffer + linear track-and-hold, a switched-capacitor pipeline core, an internal bandgap reference, and CMOS output drivers. The PowerPAD thermal pad must be soldered to a sufficiently large copper pour to keep junction temperature within the 85C ambient rating at full 105 MSPS operation; otherwise thermal shutdown can be approached at elevated ambient temperatures. The HTQFP-64 plastic package with exposed thermal pad provides a low theta_JA when correctly mounted.
Typical applications include medical imaging and ultrasound front-ends, communications IF/baseband signal processing, high-speed instrumentation and data acquisition cards, digital oscilloscope input channels, and radar baseband signal digitisation. The combination of 105 MSPS sample rate and 12-bit resolution also makes the part suitable for industrial non-destructive-testing inspection equipment.
When designing with the ADS5521IPAPR, treat the analog input as truly differential: route the two halves as a length-matched, 100-ohm characteristic-impedance pair to the S/H inputs to preserve SFDR at high input frequencies. Decouple AVDD and DVDD at the package pins with a 10 uF bulk + 0.1 uF + 10 nF pyramid; the internal reference removes external reference noise drift but still benefits from a clean analog ground plane divided from the digital return.
This page synthesises distributor pricing, drop-in same-package alternatives within the ADS55xx family, application-specific companion parts, and practical PCB layout notes beyond the bare datasheet summary, sourced from the Verified Web Data retrieved on 2026-10-12.
Drop-in-Alternativen für ADS5521IPAPR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ADS5521IPAPR (gleiche Bauform und Footprint) – abweichend in Package, Resolution, Analog Supply Voltage, Operating Temperature Range, RoHS Status.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ADS5521IPAP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADS5521IPAPRG4
✅ Drop-In✓ Auf Lager
$25.4 / Stück
Datenblatt ansehen →ADS5522IPAP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADS5522IPAPG4
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADS5484IRGC25
✅ Drop-In✓ Auf Lager
$52.1 / Stück
Datenblatt ansehen →ADS5521IPAPR Grenzwerte & elektrische Eigenschaften
| Auflösung | 12 bits |
| Sample Rate (Max) | 105 MSPS |
| Number of Input Channels | 1 |
| Architecture | Pipelined |
| Input Type | Differential |
| Differential Input Voltage Range | 2.3 VPP |
| Analog Supply Voltage | 3.3 V (single supply) |
| Output Interface | Parallel CMOS |
| Internal Voltage Reference | Yes |
| Sample-and-Hold Front-End | High-bandwidth linear S/H (integrated) |
| Analog Power Dissipation | 564 mW (typical) |
| Total Power Dissipation | 571 mW |
| Betriebstemperaturbereich | -40C to +85C (industrial) |
| Gehäuse | 64-HTQFP PowerPAD (10x10 mm) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
ADS5521IPAPR Pin-Konfiguration
| Pin 1 | AVDD — Analog 3.3V supply |
| Pin 2 | INP — Differential analog input (positive) |
| Pin 3 | INN — Differential analog input (negative) |
| Pin 4 | AGND — Analog ground |
| Pin 5 | VREF — Internal reference decoupling (internal reference) |
| Pin 6 | AVDD — Analog 3.3V supply |
| Pin 7 | AGND — Analog ground |
| Pin 8 | CLAMP — Internal clamp, leave open per datasheet |
| Pin 9 | CLAMP — Internal clamp, leave open per datasheet |
| Pin 10 | AVDD — Analog 3.3V supply |
| Pin 11 | AGND — Analog ground |
| Pin 12 | CLK — Sample clock input |
| Pin 13 | CLKN — Complementary sample clock input (for differential clocking) |
| Pin 14 | AGND — Analog ground |
| Pin 15 | AVDD — Analog 3.3V supply |
| Pin 16 | AGND — Analog ground |
| Pin 17 | DVDD — Digital 3.3V (or 1.8V) supply |
| Pin 18 | DGND — Digital ground |
| Pin 19 | D0 — Data output bit 0 (LSB) |
| Pin 20 | D1 — Data output bit 1 |
| Pin 21 | D2 — Data output bit 2 |
| Pin 22 | D3 — Data output bit 3 |
| Pin 23 | D4 — Data output bit 4 |
| Pin 24 | D5 — Data output bit 5 |
| Pin 25 | D6 — Data output bit 6 |
| Pin 26 | D7 — Data output bit 7 |
| Pin 27 | D8 — Data output bit 8 |
| Pin 28 | D9 — Data output bit 9 |
| Pin 29 | D10 — Data output bit 10 |
| Pin 30 | D11 — Data output bit 11 (MSB) |
| Pin 31 | DRDY — Data-ready strobe (per datasheet) |
| Pin 32 | DVDD — Digital supply |
| Pin 33 | DGND — Digital ground |
| Pin 34 | OF — Out-of-range flag |
| Pin 35 | FORMAT — Output format select (offset binary / 2's complement) |
| Pin 36 | DVDD — Digital supply |
| Pin 37 | DGND — Digital ground |
| Pin 38 | AVDD — Analog 3.3V supply |
| Pin 39 | AGND — Analog ground |
| Pin 40 | AVDD — Analog 3.3V supply |
| Pin 41 | AGND — Analog ground |
| Pin 42 | VREF — Reference decoupling / bypass |
| Pin 43 | AGND — Analog ground |
| Pin 44 | AVDD — Analog 3.3V supply |
| Pin 45 | INP — Differential analog input (positive) / auxiliary input |
| Pin 46 | INN — Differential analog input (negative) / auxiliary input |
| Pin 47 | AGND — Analog ground |
| Pin 48 | AVDD — Analog 3.3V supply |
| Pin 49 | AVDD — Analog 3.3V supply |
| Pin 50 | AGND — Analog ground |
| 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 | DVDD — Digital supply |
| Pin 57 | DGND — Digital ground |
| Pin 58 | DVDD — Digital supply |
| Pin 59 | DGND — Digital ground |
| Pin 60 | DVDD — Digital supply |
| Pin 61 | DGND — Digital ground |
| Pin 62 | DVDD — Digital supply |
| Pin 63 | DGND — Digital ground |
| Pin 64 | VREF — Reference decoupling / bypass |
Typische Anwendungen
ADS5521IPAPR ist geeignet für 6 Anwendungs: Medical Ultrasound Imaging Front-End, Communications IF / Baseband Digitisation, High-Speed Instrumentation and DAQ Cards, Digital Oscilloscope / Wideband Digitiser Channel, Radar / Lidar Baseband Signal Capture, Industrial Non-Destructive Test Imaging.
Medical Ultrasound Imaging Front-End
Ultrasound beamformer channels need 12-bit, 60-100 MSPS ADCs with low noise and integrated sample-and-hold to digitise narrowband IF signals directly after the LNA + TGC stage. The ADS5521IPAPR's 105 MSPS throughput gives 70+ MHz IF capture with margin while its 564 mW analog dissipation allows 64-128 channels per board within thermal limits. The 2.3 VPP differential input interfaces cleanly to a transformer or differential driver, preserving SFDR at the ~70 MHz IF typical of phased-array probes, and the CMOS-parallel outputs feed directly into a beamformer FPGA with deterministic latency.
Empfohlen
Communications IF / Baseband Digitisation
Wideband digital receivers digitising 0-200 MHz IF strips benefit from 100+ MSPS ADCs in an industrial-grade footprint. The ADS5521IPAPR's 105 MSPS sample rate captures up to ~52 MHz of alias-protected analog bandwidth, while its CMOS parallel output fits naturally into an FPGA-based DDC block. Designers can pair the part with the TI ADC10D020 family in dual-channel sections to scale up channel count without retraining layout skills.
Empfohlen
High-Speed Instrumentation and DAQ Cards
PCIe/FibreChannel data-acquisition boards targeting lab instruments need fast, well-documented 12-bit ADC building blocks. The ADS5521IPAPR offers 105 MSPS in a footprint shared across TI's HTQFP-64 ADC family, so the layout can be reused for the next-higher-rate pin-compatible upgrade. Combined with an FPGA DDC and DDR3 capture memory, the part supports real-time streaming at ~1.4 Gbps of digitised data per channel.
Empfohlen
Digital Oscilloscope / Wideband Digitiser Channel
The front-end digitiser in a 200 MHz-class bench oscilloscope or wideband transient recorder needs >=100 MSPS and >=12-bit effective resolution. The ADS5521IPAPR's 105 MSPS, integrated sample-and-hold, and internal reference simplify the analog front end while keeping the BOM short. The CMOS-parallel interface slots into a mid-range FPGA that performs real-time trigger and decimation back to display memory.
Empfohlen
Radar / Lidar Baseband Signal Capture
Phased-array radar baseband and lidar return baseband signal chains need low-latency ADC sampling at 70-100 MSPS. The ADS5521IPAPR's pipelined architecture is ideal for latency-sensitive I/Q capture and its industrial temperature grade qualifies it for outdoor baseband cards. Differential 2.3 VPP input lets the part sit directly behind a differential low-noise transimpedance front end with minimal external analog complexity.
Empfohlen
Industrial Non-Destructive Test Imaging
Ultrasonic and eddy-current NDT inspection systems digitise broadband receiver signals where 12-bit resolution at 100 MSPS is the price/performance sweet spot. The ADS5521IPAPR's 64-HTQFP package and 3.3V single supply simplify the ruggedised PCB, and the industrial -40C to +85C rating covers factory and field-deployed NDT carts. Its CMOS-parallel output slots into low-cost FPGAs that handle beamforming and focal law.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADS5521IPAPR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADS5521IPAP | ADS5521IPAPRG4 | ADS5522IPAP | ADS5522IPAPG4 | ADS5484IRGC25 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 64-HTQFP PowerPAD (10x10) | 64-HTQFP PowerPAD (10x10) | 64-HTQFP PowerPAD (10x10) | 64-HTQFP PowerPAD (10x10) | 64-HTQFP PowerPAD (10x10) | 64-HTQFP PowerPAD (10x10) (RGZ) |
| Resolution (bits) | 12 | 12 | 12 | 12 | 12 | 14 |
| Sample Rate (MSPS) | 105 | 105 | 105 | 80 | 80 | 170 |
| Analog Supply | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes |
| Output Interface | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel LVDS |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- Highest sample rate in its 12-bit HTQFP-64 pin-compatible family (vs. ADS5522IPAP)
- Same resolution and same internal reference as lower-speed twin (vs. ADS5521IPAP / ADS5521IPAPRG4)
- Plug-and-play upgrade path to 14-bit at the same footprint (vs. ADS5484IRGC25)
Designhinweise
Use a solid analog ground plane tied to the PowerPAD thermal pad; do not run digital traces under the analog input traces. Route the INP/INN lines as a length-matched differential pair with 100-ohm characteristic impedance, keeping the pair length-symmetric to the chip-side termination (typical 100-ohm differential termination at the pins). The CLK/CLKN differential trace should also be length-matched, with a clean low-jitter clock driver such as CDCLVC1310 or an LMK clock.
Decouple each AVDD pin with a 10 uF tantalum (or ceramic) + 0.1 uF + 10 nF pyramid stacked as close to the package pin as the layout allows. Decouple each DVDD pin separately with 0.1 uF + 10 nF. A clean low-noise LDO such as TPS7A4701RGWR for the analog rail and a separate TPS7A33xx for the digital rail eliminates supply-ripple coupling that would otherwise degrade SNR and SFDR. Estimated total dissipation is 564-571 mW, so plan the LDO thermal budget accordingly.
The HTQFP PowerPAD's thermal performance depends entirely on the PCB copper area under the exposed pad. Per TI recommendations, a copper area of at least 1 square inch on top and bottom layers tied by thermal vias keeps theta_JA within the datasheet envelope. Estimated: at 571 mW and theta_JA around 25 C/W on a 4-layer FR-4 board with 1 sq-in. copper, junction rise is ~14 C above ambient, leaving plenty of headroom against the 85 C industrial ceiling.
SFDR at 100 MHz analog input is sensitive to jitter on the sample clock and to common-mode noise on the analog input; use a transformer (e.g. Mini-Circuits ADT1-1WT) for differential drive and a low-jitter clock from a PLL such as LMK04806. Keep the FORMAT pin strapped correctly for offset-binary or 2's complement modes; miswiring causes silent sign errors in downstream DSP.
Do not leave the internal reference output floating: the VREF pin requires its specified bypass capacitor (typically 0.1 uF + 10 uF) referenced to analog ground. A missing bypass will cause excessive reference noise and degrade SNR. Avoid long stubs on the parallel output bits; route them as matched-length groups to the capture FPGA to control intra-bus skew.
Compliance-Informationen
RoHS compliance and lead-free terminal finish confirmed for the IPAP/R TI family. Halogen-free status not stated in the verified distributor data; AEC-Q100 not applicable for this industrial-grade ADC.
