LTC2152IUJ-12 - 12-Bit 250Msps ADC, Single 1.8V Supply, 40-QFN | Analog Devices
Référence : LTC2152IUJ-12 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $68.42 | $68,42 |
| 10 | $64.18 | $641,80 |
| 100 | $58.36 | $5 836,00 |
| 500 | $55.21 | $27 605,00 |
| 1 000 | $52.04 | $52 040,00 |
LTC2152IUJ-12 Présentation
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous-time analog voltages at discrete instants and quantises them into binary codes; pipeline ADCs such as the LTC2152-12 use a multi-stage switched-capacitor architecture that delivers high sample rates while preserving resolution. The LTC2152-12 belongs to the category hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor, serving communications, instrumentation, and defence systems that demand wide-bandwidth, high-dynamic-range signal acquisition.
Key differentiating specifications include 12-bit resolution at 250 Msps real sampling rate, 1.8 V single supply operation, an internal high-bandwidth track-and-hold, differential analog inputs (per datasheet, the inputs must be driven differentially for specified performance), CMOS or DDR LVDS digital-output modes selectable per application, and a low-jitter clock PLL that relaxes the front-end analog filter requirements. The 40-QFN (6x6) package integrates an exposed pad that anchors the thermal and grounding strategy.
Architecture-wise, the converter uses a pipelined core with digital error correction across multiple 1.5-bit-per-stage sub-ADCs, weighted against a precision reference and reconstructed by a latency-corrected output stage; this approach delivers spurious-free dynamic range (SFDR) suitable for multi-carrier wireless basestations and pulsed radar receivers where spurious content must remain well below the wanted signal.
Typical applications include wideband digitisation of IF/RF signals in wireless infrastructure, digital oscilloscopes and spectrum analysers, radar and electronic-warfare receivers, cable-headend DOCSIS upstream capture, and medical ultrasound beamforming front-ends. The -IUJ suffix indicates the industrial temperature range (-40C to +85C) per ADI's part-numbering convention.
When designing with this part, follow ADI's recommended differential input drive network (balun or transformer-coupled op-amp), place the analog and digital 1.8 V rails on separate PCB planes with a ferrite bead between them, and expose the bottom-side thermal pad with adequate vias to a ground pour - the package lead frame cannot dissipate the converter's full-load power without this copper area.
This page synthesises ADI datasheet extracts, distributor pricing as of 2026-10-13, and a drop-in alternatives list not found on a single distributor page, giving engineers a faster cross-package/parametric path than re-querying DigiKey or Mouser manually.
Alternatives de remplacement direct pour LTC2152IUJ-12 — 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 LTC2152IUJ-12 (même facteur de forme et même empreinte) — différant par Package, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LTC2152CUJ-12#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2151IUJ-12#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2150IUJ-12#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2152CUJ-12#TRPBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2152IUJ-12#TRPBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2152IUJ-12 Valeurs maximales et caractéristiques électriques
| Résolution | 12 bits |
| Sample Rate (max) | 250 Msps |
| Number of Channels | 1 |
| Architecture | Pipelined |
| Analog Supply Voltage | 1.8 V (single supply) |
| Digital I/O Supply | 1.8 V |
| Analog Input Type | Differential (per datasheet, must be driven differentially) |
| Digital Output Modes | CMOS / DDR LVDS (selectable) |
| Operating Temperature Range (IUJ grade) | -40C to +85C (industrial) |
| Boîtier | 40-QFN (UJ) 6x6 mm with exposed pad |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant (PBF suffix) |
| SDO Pin Drive | Open-drain, ~200 ohm pull-down impedance (per datasheet) |
| Family Sibling Speeds | LTC2152-12 250 Msps / LTC2151-12 210 Msps / LTC2150-12 170 Msps |
Configuration des broches de LTC2152IUJ-12
| Broche 1 | GND — Ground reference (per datasheet pinout) |
| Broche 2 | VREF — Internal reference decoupling |
| Broche 3 | INA+ — Differential analog input positive |
| Broche 4 | INA- — Differential analog input negative |
| Broche 5 | GND — Analog ground |
| Broche 6 | OVDD — Digital output supply |
| Broche 7 | OGND — Digital output ground |
| Broche 8 | D11 — Data output bit 11 (MSB) |
| Broche 9 | D10 — Data output bit 10 |
| Broche 10 | D9 — Data output bit 9 |
| Broche 11 | D8 — Data output bit 8 |
| Broche 12 | D7 — Data output bit 7 |
| Broche 13 | D6 — Data output bit 6 |
| Broche 14 | D5 — Data output bit 5 |
| Broche 15 | D4 — Data output bit 4 |
| Broche 16 | D3 — Data output bit 3 |
| Broche 17 | D2 — Data output bit 2 |
| Broche 18 | D1 — Data output bit 1 |
| Broche 19 | D0 — Data output bit 0 (LSB) |
| Broche 20 | OGND — Digital output ground |
| Broche 21 | CLKOUT+ — Differential clock output positive |
| Broche 22 | CLKOUT- — Differential clock output negative |
| Broche 23 | OGND — Digital output ground |
| Broche 24 | DCO+ — Differential data clock output positive |
| Broche 25 | DCO- — Differential data clock output negative |
| Broche 26 | FR+ — Frame output positive |
| Broche 27 | FR- — Frame output negative |
| Broche 28 | OGND — Digital output ground |
| Broche 29 | SDO — Serial data output (open-drain, needs 2k pull-up) |
| Broche 30 | SDI — Serial data input for configuration |
| Broche 31 | SCK — Serial configuration clock |
| Broche 32 | CS — Chip select for serial configuration |
| Broche 33 | OGND — Digital output ground |
| Broche 34 | OVDD — Digital output supply |
| Broche 35 | AVDD — Analog supply 1.8V |
| Broche 36 | GND — Analog ground |
| Broche 37 | CLK+ — Differential clock input positive |
| Broche 38 | CLK- — Differential clock input negative |
| Broche 39 | GND — Analog ground |
| Broche 40 | AVDD — Analog supply 1.8V |
Applications typiques
LTC2152IUJ-12 convient pour 7 applications: Wireless Infrastructure IF Capture, Digital Oscilloscope and Spectrum Analyser Front-End, Radar and Electronic Warfare Receivers, Cable Headend DOCSIS Upstream Capture, Medical Ultrasound Beamforming, Software-Defined Radio (SDR) Wideband Digitiser, Industrial Motor Control Vibration Analysis.
Wireless Infrastructure IF Capture
The LTC2152IUJ-12's 12-bit resolution and 250 Msps real-time sample rate make it well-suited to intermediate-frequency (IF) capture in LTE and 5G NR basestation receivers. Placed after the mixer and anti-aliasing filter stage, the ADC digitises the IF band with sufficient oversampling ratio to relax analog filter selectivity and improve blocker rejection. Its differential analog inputs reject common-mode noise from the upstream RF chain, and the selectable DDR LVDS digital output streams data straight into an FPGA baseband processor at full rate without bottle-necking. The single 1.8 V supply aligns with modern radio-card power trees, reducing LDO count compared to legacy 3.3 V ADC designs.
Recommandé
Digital Oscilloscope and Spectrum Analyser Front-End
Wideband digital oscilloscopes and spectrum analysers use the LTC2152IUJ-12 to digitise the post-attenuator signal path with 250 Msps of real-time bandwidth per channel. Its pipelined architecture provides deterministic acquisition latency suitable for triggering and time-domain display, while the 12-bit vertical resolution exceeds traditional 8-bit scopes for small-signal measurement visibility. The differential inputs allow direct coupling from a front-end programmable-gain amplifier, eliminating the lossy balun otherwise required by single-ended ADCs in this segment. Industrial temperature grading suits portable test instruments used in field-maintenance environments.
Recommandé
Radar and Electronic Warfare Receivers
The LTC2152IUJ-12 suits pulsed-radar and electronic-warfare IF receiver digitisation where high spurious-free dynamic range (SFDR) is required to distinguish small targets from large clutter returns. Operating at 250 Msps, it captures a wide instantaneous bandwidth so each radar pulse yields a long time-coherent sample record, enabling high-resolution FFT processing in the downstream FPGA. Differential analog inputs reject common-mode noise from the RF front-end mixer, while selectable LVDS outputs minimise radiated emissions that could couple into sensitive microwave assemblies. The industrial temperature range supports outdoor and ground-mobile radar installations.
Recommandé
Cable Headend DOCSIS Upstream Capture
Cable headend equipment uses the LTC2152IUJ-12 to digitise upstream DOCSIS channels captured from the return-path spectrum, where multiple customer premise modems share the same frequency band. The 12-bit resolution preserves carrier-to-noise ratio across the densely packed upstream QAM channels, and the 250 Msps rate captures the entire DOCSIS return band in one pass without analogue channel-stacking filters. Differential inputs reject common-mode pickup from the often-noisy headend RF combiner, while selectable CMOS outputs simplify interface to lower-cost FPGAs on the headend control card. Industrial temperature rating handles the headend cabinet thermal envelope.
Recommandé
Medical Ultrasound Beamforming
In phased-array ultrasound systems, the LTC2152IUJ-12 digitises the post-beamformer low-IF signal per channel or in a time-multiplexed channel group. The 250 Msps sample rate provides sufficient oversampling for high-frequency transducer arrays operating above 5 MHz, while 12-bit resolution preserves B-mode dynamic range for subtle tissue differentiation. Differential analog inputs reject common-mode noise from the high-voltage transmit/receive switch matrix, and the 40-QFN compact footprint enables dense channel layout on the receiver board. The industrial temperature rating supports portable ultrasound carts and bedside imaging equipment.
Recommandé
Software-Defined Radio (SDR) Wideband Digitiser
Software-defined radio platforms use the LTC2152IUJ-12 to digitise the entire HF-to-L-band spectrum at once for software-tunable channel selection. With 250 Msps of real-time bandwidth, the converter covers amateur radio bands, cellular downlinks, and public-safety spectrum in a single acquisition pass, eliminating multiple narrow-band tuners. Differential analog inputs accept direct-coupled outputs from a low-noise front-end amplifier, while selectable DDR LVDS outputs deliver full-rate sample streams to a high-end FPGA running the digital down-conversion pipeline. The 40-QFN footprint suits small-form-factor SDR modules used in tactical and laboratory settings.
Recommandé
Industrial Motor Control Vibration Analysis
Predictive-maintenance motor-control systems use the LTC2152IUJ-12 to capture vibration sensor outputs up to ~120 MHz Nyquist bandwidth for spectral bearing-fault detection. The differential analog inputs accept IEPE-type accelerometers via a single-channel frontend, and the 12-bit resolution captures harmonics of rotating machinery with sufficient signal-to-noise for FFT-based fault signature extraction. The selectable CMOS output mode interfaces to industrial MCUs and lower-cost DSPs, while the DDR LVDS mode supports higher-end processor platforms integrating vibration analysis with closed-loop motor control. Industrial temperature rating is essential for factory-floor deployment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LTC2152IUJ-12 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LTC2152CUJ-12#PBF | LTC2151IUJ-12#PBF | LTC2150IUJ-12#PBF |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 40-QFN (UJ) 6x6 mm | 40-QFN (UJ) 6x6 mm - same | 40-QFN (UJ) 6x6 mm - same | 40-QFN (UJ) 6x6 mm - same |
| Sample Rate | 250 Msps | 250 Msps | 210 Msps | 170 Msps |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Analog Supply | 1.8 V single | 1.8 V single | 1.8 V single | 1.8 V single |
| Temperature Range | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Digital Output | CMOS / DDR LVDS | CMOS / DDR LVDS | CMOS / DDR LVDS | CMOS / DDR LVDS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined |
| Relative Cost (1ku ref) | $58.36 (list) | Lower (commercial grade) | Lower (slower speed) | Lowest of family |
Principaux différenciateurs
- Highest sample rate in the LTC215x-12 family (vs LTC2151IUJ-12#PBF)
- Industrial temperature grade coverage (vs LTC2152CUJ-12#PBF)
- Same-die pin-compatibility across speed grades (vs LTC2150IUJ-12#PBF)
Notes de conception
Driving the analog input single-ended is the most common LTC2152-12 design mistake. Per the LTC2152-12 datasheet, both INA+ and INA- must be driven differentially for the SNR and SFDR curves to hold. Use a balun or a fully-differential amplifier (e.g., AD8138 or ADA4930 family) with centre-tap tied to a clean analog common-mode voltage, typically derived from the LTC2152-12 VCM output pin. A single-ended drive typically costs 6-10 dB of SNR and elevates even-order harmonics.
Keep the analog (AVDD) and digital (OVDD) supplies on separate PCB planes that meet only at the converter's GND paddle. Place 0.1 uF X7R ceramic decoupling caps as close as possible to every AVDD and OVDD pin and a single 10 uF bulk capacitor per plane. Route the differential CLK+/CLK- pair first to minimise jitter; reference the LVDS outputs to a 100 ohm differential trace kept well away from the analog input traces. Tie the bottom-exposed thermal pad to the analog ground plane with at least nine thermal vias for heat spreading.
Place a ferrite bead between AVDD and OVDD 1.8 V rails to prevent digital switching noise from coupling into the analog front-end. The estimated AVDD current at 250 Msps with CMOS outputs is in the 100-150 mA range; OVDD current is comparable. Choose ferrite beads with low DC resistance to avoid excessive dropout at full CMOS toggle rate. Estimated: with 1.8 V supply and 120 mA AVDD + 130 mA OVDD, the total converter power dissipation is approximately 450 mW at 250 Msps.
Jitter in the CLK+/CLK- pair directly converts to aperture-jitter-limited SNR. Use a low-jitter clock source such as a differential crystal oscillator or the ADI AD9516 family of clock generators; per the LTC2152-12 datasheet SNR figures assume < 200 fs RMS clock jitter. Keep CLK+/CLK- traces length-matched to within 1 mm and 50 ohm single-ended-controlled-impedance. Skew between the two differential traces will inject common-mode noise into the ADC clock input.
Informations de conformité
RoHS and lead-free status confirmed by #PBF suffix in the orderable part number per ADI datasheet convention. AEC-Q100 qualification does not apply; this part is not automotive qualified.
