IDTADC1212D105HN-C18 - Dual 12-bit 105 MSPS ADC | IDT/Renesas
Référence : IDTADC1212D105HN-C18 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $38.5 | $38,50 |
| 10 | $34.2 | $342,00 |
| 100 | $29.75 | $2 975,00 |
| 500 | $26.1 | $13 050,00 |
| 1 000 | $23.4 | $23 400,00 |
IDTADC1212D105HN-C18 Présentation
A pipelined ADC is a multi-stage converter architecture that distributes the conversion task across cascaded low-resolution stages, each of which samples-and-hold the residue for the next stage. The pipelined approach allows high sampling rates (here 105 MSPS per channel, 210 MSPS interleaved) while consuming low power per conversion, making this architecture the workhorse of communications, medical imaging, instrumentation and digital oscilloscope front-ends. By placing two ADCs in one die, the device also offers simultaneous-sampling operation for I/Q demodulation and beam-forming radar where the relative phase of two channels must be preserved.
Key features include dual 12-bit core ADCs at 105 MSPS per channel, single 1.8 V supply operation, LVDS digital outputs, programmable full-scale input range, internal voltage reference, and a separate output supply (DRVDD) for LVDS common-mode interfacing. The 64-pin VFQFPN 9x9 mm footprint integrates exposed thermal pad for low-junction-temperature operation in dense multi-channel boards.
In the system hierarchy, this part belongs to the analog-to-digital converter family -> data converter -> signal-chain IC -> mixed-signal semiconductor. Renesas acquired IDT in 2019 and continues to manufacture and support the ADC1212D105HN family. The C18 designator in the part number typically identifies the die revision and the 105MSPS speed grade.
Typical applications include dual-channel digital oscilloscopes, communications receiver IF sampling, medical ultrasound beam-formers, multi-antenna Wi-Fi/5G base-station observation receivers, and multi-axis industrial vibration monitoring. The dual-core simultaneous sampling is ideal where channel-to-channel phase coherence must be preserved.
When designing with the dual ADC, place the 1.8 V AVCC decoupling capacitors within 2 mm of the analog supply pins and provide an unbroken analog ground plane tied to the exposed pad. Match trace lengths for LVDS differential pairs to maintain lane-to-lane skew below 50 ps.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the IDT/ADC1212 family, and PCB layout notes beyond the manufacturer datasheet, helping engineers shorten sourcing and design-in time.
Alternatives de remplacement direct pour IDTADC1212D105HN-C18 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec IDTADC1212D105HN-C18 (même facteur de forme et même empreinte) — différant par Number of Channels, Package, Resolution, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
IDTADC1212D125HN-C18
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
IDTADC1213S125HN-C1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
IDTADC1112D125HN-C18
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
IDTADC1210S065HN-C18
✅ Remplacement direct✓ En stock
$10.05 / unité
Voir la fiche technique →IDTADC1610S125HN-C1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
IDTADC1212D105HN-C18 Valeurs maximales et caractéristiques électriques
| Résolution | 12 bits per channel |
| Number of Channels | 2 (dual, simultaneous sampling) |
| Sampling Rate (per channel) | 105 MSPS |
| Sampling Rate (interleaved) | 210 MSPS |
| Architecture | Pipelined |
| Analog Input Range | Bipolar, programmable full-scale |
| Analog Supply Voltage (AVDD) | 1.8 V |
| Digital Outputs | LVDS |
| Internal Reference | Yes (internal voltage reference) |
| Boîtier | 64-VFQFPN (9x9 mm) with exposed pad |
| Type de montage | Surface Mount |
| Plage de température de fonctionnement | -40C to +85C (industrial) |
| Manufacturer | Renesas Electronics (formerly IDT) |
| Die / Speed Grade | C18 (105 MSPS speed grade) |
| Statut RoHS | Compliant |
Guide de configuration des broches du IDTADC1212D105HN-C18 64-vfqfpn (9x9 mm) with exposed pad
Configuration des broches du IDTADC1212D105HN-C18 (boîtier 64-vfqfpn (9x9 mm) with exposed pad). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour IDTADC1212D105HN-C18.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
IDTADC1212D105HN-C18 convient pour 7 applications: Dual-Channel Digital Oscilloscope Digitizer, Communications IF-Sampling Receiver, Medical Ultrasound Beam-Former Receiver, Multi-Axis Industrial Vibration Monitoring, 5G Base-Station Observation Receiver, Radar / Lidar Front-End Capture, Test & Measurement Instrumentation.
Dual-Channel Digital Oscilloscope Digitizer
The IDTADC1212D105HN-C18 fits dual-channel oscilloscope front-ends because each of its two 12-bit cores samples at 105 MSPS in lockstep, preserving channel-to-channel phase coherence for triggering and time-interleaved acquisition. The 1.8 V AVDD supply and LVDS outputs minimize switching noise on the analog ground plane, which is critical for capturing sub-millivolt signals with 12-bit accuracy. With <500 mW total power consumption per part, several parts can be stacked for 4- or 8-channel deep-memory oscilloscopes without overheating the enclosure.
Recommandé
Communications IF-Sampling Receiver
IF-sampling software-defined radios benefit from the IDTADC1212D105HN-C18's 105 MSPS per-channel rate, enabling direct digitization of intermediate frequencies up to 70 MHz while oversampling the baseband. The two ADCs can capture I and Q quadrature paths simultaneously without a skew-matching network. The LVDS digital interface keeps common-mode EMI low in the RF enclosure, critical when the ADC is colocated with sensitive mixers and LNAs.
Recommandé
Medical Ultrasound Beam-Former Receiver
Medical ultrasound beam-forming arrays require many channels of simultaneous-sampling ADCs to capture return echoes with precise phase alignment; the IDTADC1212D105HN-C18's dual-core, lockstep sampling at 105 MSPS keeps I/Q or channel-to-channel timing within tens of picoseconds. The 12-bit resolution captures the 40-60 dB dynamic range typical of echo signals, while the small 9x9 mm VFQFPN footprint enables 64-channel probe boards. LVDS outputs keep switching noise far from the low-noise front-end preamplifiers.
Recommandé
Multi-Axis Industrial Vibration Monitoring
Industrial vibration monitoring for rotating machinery (motors, pumps, turbines) needs several simultaneously sampled vibration channels. The IDTADC1212D105HN-C18 digitizes two axes per chip at 105 MSPS, giving more than 100 kHz of usable analysis bandwidth per channel when FFT-windowed. Its industrial -40C to +85C operating temperature range covers factory floor conditions. Differential bipolar inputs interface directly to IEPE accelerometers through a single-ended-to-differential driver.
Recommandé
5G Base-Station Observation Receiver
5G base stations need observation receivers to monitor the RF spectrum and detect interference across wide bandwidths; the IDTADC1212D105HN-C18 captures two sub-6 GHz bands simultaneously when its ADCs are clocked at 105 MSPS with appropriate input downconverters. The 12-bit resolution captures the >40 dB dynamic range of 5G reference signals, while LVDS outputs simplify direct interface to FPGAs running 4G/5G PHY stacks. Each channel's programmable full-scale input range adapts to varying input levels.
Recommandé
Radar / Lidar Front-End Capture
Automotive and industrial radar as well as LIDAR front-ends rely on multi-channel simultaneous-sampling ADCs to preserve the time-of-flight timing across transmit/receive paths. The IDTADC1212D105HN-C18's lockstep dual-channel 105 MSPS sampling is well matched to phase-modulated radar IFs up to 35 MHz. The 64-VFQFPN footprint with exposed pad keeps the part compact while the LVDS outputs reduce EMI in mixed-signal radar enclosures.
Recommandé
Test & Measurement Instrumentation
Benchtop test and measurement instruments (spectrum analyzers, transient recorders, digitizers) often need multiple high-speed ADC channels with synchronized timing. The IDTADC1212D105HN-C18 fits 2-channel front-ends for memory recorders, wide-bandwidth vector signal analyzers, and digital phosphor oscilloscopes. The 12-bit resolution with >70 dBFS SNR and LVDS digital outputs are well matched to Xilinx/Altera FPGA-based data acquisiTIon cards used in modern instrumentation.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour IDTADC1212D105HN-C18 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | IDTADC1212D125HN-C18 | IDTADC1213S125HN-C1 | IDTADC1112D125HN-C18 | IDTADC1210S065HN-C18 |
|---|---|---|---|---|---|
| Brand | Renesas (formerly IDT) | Renesas (formerly IDT) | Renesas (formerly IDT) | Renesas (formerly IDT) | Renesas (formerly IDT) |
| Package | 64-VFQFPN (9x9 mm) | 64-VFQFPN (9x9 mm) | 64-VFQFPN (9x9 mm) | 64-VFQFPN (9x9 mm) | 64-VFQFPN (9x9 mm) |
| Resolution | 12 bit | 12 bit | 12 bit | 11 bit | 12 bit |
| Number of Channels | 2 (dual) | 2 (dual) | 1 (single) | 2 (dual) | 1 (single) |
| Sampling Rate per Channel | 105 MSPS | 125 MSPS | 125 MSPS | 125 MSPS | 65 MSPS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Analog Supply (AVDD) | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Digital Outputs | LVDS | LVDS | LVDS | LVDS | LVDS |
Principaux différenciateurs
- Dual-channel simultaneous 105 MSPS sampling (vs IDTADC1210S065HN-C18)
- 12-bit resolution vs the 11-bit IDTADC1112D125HN-C18 (vs IDTADC1112D125HN-C18)
- Smaller footprint than typical dual-ADCs in QFP packages (vs Generic 64-LQFP ADC competitors)
Notes de conception
Place 100 nF + 10 uF ceramic bypass capacitors as close as possible to each AVDD pin (within 2 mm trace length). Use a single uninterrupted analog ground plane tied directly to the exposed thermal pad with at least four 0.3 mm thermal vias. For multi-channel boards (4+ ADC parts) stitch the analog and digital grounds under the ADC with a single-point bridge to avoid ground-loop noise coupling. Differential LVDS lanes must be length-matched to within 0.5 mm per pair and across all pairs to within 5 mm to maintain lane-to-lane skew under 50 ps, per LVDS signal-integrity best practice.
Estimated: with dual channels active at 105 MSPS each, the IDTADC1212D105HN-C18 typically dissipates about 0.4 W total. With a 9x9 mm VFQFPN theta_JA of approximately 32 C/W, the junction temperature rise above ambient is about 13 C, well below the 150 C maximum. When multiple parts are packed onto one board (4+ devices), cumulative dissipation reaches 1.5-2 W per square inch and a 2 oz copper pour plus a low-cost stamped aluminum heat sink may be needed. Always verify thermal margins in real airflow conditions.
Route the LVDS pairs with 100 ohm differential impedance, tightly length-matched. Insert 0.1 uF AC-coupling capacitors in series when the FPGA bank voltage differs from the ADC's DRVDD, otherwise keep DC coupling. Place a 100 ohm differential termination resistor at the FPGA end of each LVDS pair (NOT at the ADC end unless required by datasheet). Maintain at least 3W spacing (3 times the trace width) between parallel LVDS pairs to reduce crosstalk. Use an isolated analog power island with a ferrite-bead bead bridge to suppress upstream LDO switching noise from coupling into the clock signal path.
Avoid these design pitfalls: (1) powering the ADC from a noisy switching regulator on the same rail as the FPGA, which couples switching noise into the ADC's clock and degrades SNR by 5-10 dB; (2) routing the analog input traces over split ground planes, which produces 1 LSB of missing codes near the truncation point; (3) using non-LVDS-rated connectors between the ADC and FPGA, causing intermittent bit errors; and (4) sharing a clock divider output between the two ADC cores unless verified by the datasheet, since the C18 die revision assumes independent clock inputs for true lockstep sampling. Always reference the most recent Renesas/IDT datasheet and silicon errata document before final layout.
Informations de conformité
RoHS and lead-free per Renesas/IDT packaging declaration. Not AEC-Q100 qualified - select from the automotive-graded Renesas ADC portfolio for vehicle applications. Conflict-mineral reporting compliant per Renesas policy.
