LTC2152IUJ-14 - 14-Bit 250Msps ADC, 40-QFN | Analog Devices
MPN: LTC2152IUJ-14 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $114.37 | $114.37 |
| 10 | $102.93 | $1,029.30 |
| 100 | $86.78 | $8,678.00 |
| 500 | $74.34 | $37,170.00 |
| 1,000 | $65.01 | $65,010.00 |
LTC2152IUJ-14 Overview
Drop-in alternatives for LTC2152IUJ-14 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LTC2152IUJ-14 (same form factor and footprint) — differing in Package, Sample Rate, Architecture, Resolution, Transition Noise.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTC2151IUJ-14
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTC2150IUJ-14
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTC2151CUJ-14
✅ Drop-In✓ In Stock
$29.1 / Unit
View Datasheet →LTC2150CUJ-14
✅ Drop-In✓ In Stock
$41.58 / Unit
View Datasheet →LTC2152CUJ-14
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2152IUJ-14 Maximum Ratings & Electrical Characteristics
| Resolution | 14 bits |
| Sample Rate | 250 Msps |
| Number of Input Channels | 1 |
| Architecture | Pipelined |
| INL (Typical) | ±0.85 LSB |
| DNL (Typical) | ±0.25 LSB |
| Transition Noise | 1.82 LSBRMS |
| Missing Codes | None over temperature |
| Conversion Latency | 6 clock cycles |
| Digital Output Interface | DDR LVDS |
| Clock Input | Differential ENC+/ENC-, sine/PECL/LVDS/TTL/CMOS compatible |
| Clock Duty Cycle Stabilizer | Optional (selectable) |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 40-QFN (6 mm x 6 mm) with exposed pad |
| Lead Finish | Lead-free (PBF) |
| Temperature Grade | Industrial |
LTC2152IUJ-14 Pin Configuration
| Pin 1 | AIN+ — Differential analog input (positive) |
| Pin 2 | AIN- — Differential analog input (negative) |
| Pin 3 | VREF — Internal reference bypass |
| Pin 4 | GND — Ground reference |
| Pin 5 | VDD — Analog 1.8V supply |
| Pin 6 | OGND — Output ground for LVDS |
| Pin 7 | OVDD — LVDS output supply |
| Pin 8 | OF[0]+ — LVDS output frame bit 0 (positive) |
| Pin 9 | OF[0]- — LVDS output frame bit 0 (negative) |
| Pin 10 | D0+ — LVDS output data bit 0 (positive) |
| Pin 11 | D0- — LVDS output data bit 0 (negative) |
| Pin 12 | D1+ — LVDS output data bit 1 (positive) |
| Pin 13 | D1- — LVDS output data bit 1 (negative) |
| Pin 14 | D2+ — LVDS output data bit 2 (positive) |
| Pin 15 | D2- — LVDS output data bit 2 (negative) |
| Pin 16 | GND — Ground reference |
| Pin 17 | D3+ — LVDS output data bit 3 (positive) |
| Pin 18 | D3- — LVDS output data bit 3 (negative) |
| Pin 19 | D4+ — LVDS output data bit 4 (positive) |
| Pin 20 | D4- — LVDS output data bit 4 (negative) |
| Pin 21 | D5+ — LVDS output data bit 5 (positive) |
| Pin 22 | D5- — LVDS output data bit 5 (negative) |
| Pin 23 | D6+ — LVDS output data bit 6 (positive) |
| Pin 24 | D6- — LVDS output data bit 6 (negative) |
| Pin 25 | D7+ — LVDS output data bit 7 (positive) |
| Pin 26 | D7- — LVDS output data bit 7 (negative) |
| Pin 27 | D8+ — LVDS output data bit 8 (positive) |
| Pin 28 | D8- — LVDS output data bit 8 (negative) |
| Pin 29 | D9+ — LVDS output data bit 9 (positive) |
| Pin 30 | D9- — LVDS output data bit 9 (negative) |
| Pin 31 | D10+ — LVDS output data bit 10 (positive) |
| Pin 32 | D10- — LVDS output data bit 10 (negative) |
| Pin 33 | D11+ — LVDS output data bit 11 (positive) |
| Pin 34 | D11- — LVDS output data bit 11 (negative) |
| Pin 35 | D12+ — LVDS output data bit 12 (positive) |
| Pin 36 | D12- — LVDS output data bit 12 (negative) |
| Pin 37 | D13+ — LVDS output data bit 13 (positive, MSB) |
| Pin 38 | D13- — LVDS output data bit 13 (negative, MSB) |
| Pin 39 | ENC+ — Sample clock input (positive) |
| Pin 40 | ENC- — Sample clock input (negative) |
Typical Applications
LTC2152IUJ-14 is suitable for 6 applications: Wireless Communications Base Station (IF Sampling), Software-Defined Radio (SDR) and Multi-Carrier Receivers, Medical Imaging (Ultrasound / PET Front-End Digitization), Radar / LIDAR Digitizer Front-Ends, High-End Test & Measurement (Digital Oscilloscope / Spectrum Analyzer), Industrial Data-Acquisition and Process Control.
Wireless Communications Base Station (IF Sampling)
The LTC2152IUJ-14's 14-bit resolution and 250 Msps sample rate, combined with a wide ~1.4 GHz analog input bandwidth, allow direct IF sampling of LTE/WiMAX/W-CDMA signals without an additional downconversion stage. Per the LTC2152-14 datasheet, the optional clock duty-cycle stabilizer keeps SFDR high across non-50% duty clocks, which is essential when the ADC clock is derived from a fractional-N PLL. Designers typically place the part behind a wideband balun and use the exposed thermal pad for heat spreading at full 250 Msps sampling - a four-layer PCB with continuous ground beneath the QFN pad keeps junction temperatures well within the industrial -40 C to +85 C limit.
Recommended
Software-Defined Radio (SDR) and Multi-Carrier Receivers
Software-defined radios that capture wide swaths of spectrum benefit from the LTC2152IUJ-14's combination of 250 Msps sample rate, 1.82 LSBRMS transition noise, and 14-bit dynamic range. According to the family datasheet, the pipelined architecture introduces only six clock cycles of latency, so the part is usable in low-latency demodulation paths as well as wideband spectral capture. The DDR LVDS output directly feeds FPGA transceivers with no external level shifters, reducing BOM cost. Engineers designing multi-carrier receivers often evaluate LTC2151IUJ-14 (210 Msps) in the same footprint to balance sample rate, power, and dynamic range for the target band plan.
Recommended
Medical Imaging (Ultrasound / PET Front-End Digitization)
The LTC2152IUJ-14's low transition noise (1.82 LSBRMS) and ±0.85 LSB INL (typical) allow it to resolve the small analog signals produced by ultrasound transducer arrays and PET detector channels with high linearity. The 250 Msps sample rate comfortably covers up to ~100 MHz of post-beamformer IF signal while preserving harmonic information for tissue-imaging algorithms. The industrial temperature range handles the thermal environment of cart-based and bedside ultrasound consoles. Pairing the ADC with a low-noise LDO and a careful 4-layer stack-up with split analog/digital grounds keeps spurious content out of the digitized image.
Recommended
Radar / LIDAR Digitizer Front-Ends
Pulsed radar and LIDAR receivers need wide instantaneous bandwidth to capture fast rise/fall times; the LTC2152IUJ-14's wide analog input bandwidth above 1 GHz and 250 Msps sample rate support IF digitization of sub-microsecond pulses. According to the LTC2152-14 family datasheet, DDR LVDS outputs feed FPGA SERDES blocks at sample rates that exceed the serializer-deserializer capability of most parallel-output ADCs. The pipelined latency of six clocks is acceptable for range-gated and FMCW processing. Designers evaluating cost trade-offs often slot LTC2150IUJ-14 (170 Msps) or LTC2151IUJ-14 (210 Msps) into the same 40-QFN layout for lower-band radar.
Recommended
High-End Test & Measurement (Digital Oscilloscope / Spectrum Analyzer)
The LTC2152IUJ-14 fits mid-bandwidth oscilloscope and spectrum-analyzer input channels where 250 Msps and 14 bits deliver ~70 dB of SFDR at high IF. Per the datasheet, ±0.25 LSB typical DNL eliminates missing codes over the full industrial range, which is mandatory for clean code-density histograms in production ATE. DDR LVDS streams data directly to FPGA capture memory at sustained 250 Msps without bus bottlenecks. The exposed-pad 40-QFN allows direct soldering to a multi-layer PCB thermal spreader, supporting continuous real-time acquisition without thermal throttling in bench and rack-mounted instruments.
Recommended
Industrial Data-Acquisition and Process Control
The industrial -40 C to +85 C temperature grade of the LTC2152IUJ-14 suits factory-floor condition-monitoring systems, vibration analyzers, and high-speed control loops where analog signals must be digitized at high sample rates. The pinout shares footprint with the 210 Msps LTC2151IUJ-14 and 170 Msps LTC2150IUJ-14, letting designers pick the sample rate at prototype bring-up without re-spinning the PCB. The 1.4 GHz analog bandwidth captures harmonic content above 100 MHz, supporting predictive-maintenance algorithms that look for sub-Nyquist signatures. Lead-free (#PBF) and RoHS compliance simplify integration into industrial control panels and IEC-compliant subsystems.
Recommended
Recommended Products Summary
Engineering reference data for LTC2152IUJ-14 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC2151IUJ-14 | LTC2150IUJ-14 | LTC2151CUJ-14 | LTC2150CUJ-14 | LTC2152CUJ-14 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 40-QFN (6x6) | 40-QFN (6x6) - same | 40-QFN (6x6) - same | 40-QFN (6x6) - same | 40-QFN (6x6) - same | 40-QFN (6x6) - same |
| Resolution | 14 bits | 14 bits | 14 bits | 14 bits | 14 bits | 14 bits |
| Sample Rate | 250 Msps | 210 Msps (-16%) | 170 Msps (-32%) | 210 Msps (-16%) | 170 Msps (-32%) | 250 Msps (same) |
| Temperature Grade | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) | Commercial (0 C to +70 C) | Commercial (0 C to +70 C) | Commercial (0 C to +70 C) |
| Digital Output | DDR LVDS | DDR LVDS | DDR LVDS | DDR LVDS | DDR LVDS | DDR LVDS |
| Conversion Latency | 6 clock cycles | 6 clock cycles | 6 clock cycles | 6 clock cycles | 6 clock cycles | 6 clock cycles |
Key Differentiators
- Highest sample rate in the 14-bit QFN-40 ADC family (vs LTC2151IUJ-14)
- Industrial temperature grade as standard option (vs LTC2152CUJ-14)
- Wide analog input bandwidth for direct IF sampling (vs LTC2150IUJ-14)
Design Notes
The 40-QFN (6x6 mm) exposed thermal pad must be soldered to a continuous ground plane on the top PCB layer with at least nine thermal vias to a lower inner ground plane; this keeps junction rise under load. According to the LTC2152-14 family datasheet, the device draws most of its current from the analog VDD rail, so separate analog (AVDD) and digital (OVDD) supplies should be bypassed with 0.1 uF X7R ceramics placed within 100 mil of each pin. Split the ground planes under the analog and LVDS-return pins and stitch them together only beneath the ADC.
Route ENC+/ENC- as a 100 ohm differential pair with length matching better than 5 mil to preserve jitter margin. The DDR LVDS outputs each toggle at half the sample rate (125 MHz at 250 Msps), but their transition rate is double - route each pair on a 50 ohm characteristic-impedance microstrip on the top PCB layer with continuous ground reference. Use a 100 ohm differential termination at the FPGA receiver; do not place test points along the LVDS pair, as stubs severely degrade eye height at these edge rates.
Estimated: at full 250 Msps with the analog supply at 1.8 V, the LTC2152IUJ-14 typically draws roughly 130 mA from AVDD; that is 234 mW internal dissipation. With the 40-QFN pad soldered to a 1 oz copper pour (~50 C/W theta_JA on a 4-layer board), junction rise is approximately 12 C above ambient - well within the -40 C to +85 C industrial window. Use a 2 oz copper pour or 9-via 12 mil thermal grid to bring theta_JA below 35 C/W when ambient approaches +85 C.
Do not apply a continuous-wave clock to ENC+ without first enabling the analog supply - per the datasheet, sequencing is not required but the bias network will draw transient currents that couple into AIN+. Always AC-couple the analog input (the LTC2152-14 input is differential and the common-mode voltage is set by an internal network); applying a DC common-mode outside the datasheet range causes severe gain error. Verify the optional clock duty-cycle stabilizer is enabled when the source clock is non-50% duty; otherwise SFDR drops noticeably.
Compliance Information
RoHS compliance indicated by the #PBF suffix in the orderable part number per Analog Devices' part-numbering convention. AEC-Q100 not applicable - this is a commercial/industrial grade ADC, not an automotive-qualified part. Halogen-free status not explicitly stated in the provided data sources.
