LTC2150CUJ-12 - 12-Bit 170Msps Single-Channel ADC | Analog Devices
MPN: LTC2150CUJ-12 ✓ Hoạt độngLTC2150CUJ-12 Tóm tắt
An ADC is a mixed-signal integrated circuit that converts continuous-time analog voltages into discrete digital codes at a sampling rate set by an external clock. Pipelined ADCs such as the LTC2150CUJ-12 use multi-stage conversion to achieve high sampling rates at low power; the LTC2150-12 family sits inside the broader product hierarchy of ADC -> data converter -> mixed-signal IC -> semiconductor, and is offered in 12-bit and 14-bit pin-compatible versions to simplify migration between resolutions.
Key features include a 1.25 GHz full-power analog input bandwidth, an optional integrated sample-and-hold front end, clock duty-cycle stabilization for clean Nyquist operation, low-power Sleep and Nap modes, and a serial SPI port for register configuration. The device offers pin-compatibility with 14-bit versions of the same family, allowing PCB reuse between 12-bit and 14-bit designs without layout changes. Differential analog input drive is required to realize the full AC linearity.
Typical applications include broadband communications, digital predistortion feedback loops in wireless base stations, cable-modem downstream receive paths, and high-speed test instrumentation. Designers value the LTC2150CUJ-12 for low noise, low latency, and the ability to interface to FPGAs and ASICs over LVDS or CMOS at system sample rates up to 170 Msps.
Bộ thay thế dễ dàng lắp đặt cho LTC2150CUJ-12 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LTC2150CUJ-12 (cùng hình factor và footprint) — khác nhau ở Package, Architecture, Resolution, Sample Rate, Number of Channels.
LTC2151CUJ-12
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTC2152CUJ-12
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTC2150CUJ-14
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2151CUJ-14
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LTC2159IUK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2174IUKG-14
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2150CUJ-12 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bits |
| Sample Rate | 170 Msps (mega-samples per second) |
| Architecture | Pipelined single-channel |
| Number of Channels | 1 |
| Hộp | 40-QFN (6 mm x 6 mm) - UJ suffix |
| Số chân | 40 |
| Analog Supply Voltage | 1.8 V (single supply) |
| Digital I/O Supply Voltage | 1.8 V to 3.3 V |
| Full-Power Input Bandwidth | 1.25 GHz |
| Analog Input Type | Differential (required) |
| Clock Duty Cycle Stabilizer | Yes (optional) |
| Low-Power Modes | Sleep and Nap modes |
| Configuration Interface | Serial SPI port |
| Output Format | LVDS / CMOS selectable (per datasheet) |
| Pin Compatibility | Pin-compatible 14-bit versions available |
| Trạng thái RoHS | Compliant (PBF suffix) |
Cấu hình chân LTC2150CUJ-12
| Chân 1 | GND — Ground (datasheet pad ground) |
| Chân 2 | AVDD — 1.8 V analog supply |
| Chân 3 | AIN+ — Differential analog input (positive) |
| Chân 4 | AIN- — Differential analog input (negative) |
| Chân 5 | GND — Ground |
| Chân 6 | VCM — Common-mode voltage output (bias for analog inputs) |
| Chân 7 | REFH — Reference high decoupling |
| Chân 8 | REFL — Reference low decoupling |
| Chân 9 | GND — Ground |
| Chân 10 | AVDD — 1.8 V analog supply |
| Chân 11 | GND — Ground |
| Chân 12 | AVDD — 1.8 V analog supply |
| Chân 13 | SENSE — Reference mode / external reference select |
| Chân 14 | GND — Ground |
| Chân 15 | OGND — Output driver ground |
| Chân 16 | OVDD — 1.8 V to 3.3 V output driver supply |
| Chân 17 | CLK+ — Differential clock input (positive) |
| Chân 18 | CLK- — Differential clock input (negative) |
| Chân 19 | OGND — Output driver ground |
| Chân 20 | OVDD — 1.8 V to 3.3 V output driver supply |
| Chân 21 | OGND — Output driver ground |
| Chân 22 | D0-/D0 — Output data bit 0 (negative / CMOS) |
| Chân 23 | D0+/DNC — Output data bit 0 (positive) / DNC in CMOS mode |
| Chân 24 | D1 — Output data bit 1 |
| Chân 25 | OGND — Output driver ground |
| Chân 26 | D2 — Output data bit 2 |
| Chân 27 | D3 — Output data bit 3 |
| Chân 28 | OVDD — 1.8 V to 3.3 V output driver supply |
| Chân 29 | D4 — Output data bit 4 |
| Chân 30 | D5 — Output data bit 5 |
| Chân 31 | OGND — Output driver ground |
| Chân 32 | D6 — Output data bit 6 |
| Chân 33 | D7 — Output data bit 7 |
| Chân 34 | D8 — Output data bit 8 |
| Chân 35 | D9 — Output data bit 9 |
| Chân 36 | OVDD — 1.8 V to 3.3 V output driver supply |
| Chân 37 | D10 — Output data bit 10 |
| Chân 38 | D11 — Output data bit 11 (LSB) |
| Chân 39 | CS — SPI chip select (active low) |
| Chân 40 | SCK/SDI/SDO — SPI clock / data in / data out (multiplexed) |
Ứng dụng tiêu biểu
LTC2150CUJ-12 phù hợp cho 6 Áp dụngs: Wireless Base Station Digital Predistortion Feedback, Cable Modem Downstream Receiver, Wideband Test and Measurement Instrumentation, Radar and Lidar Receiver Digitization, Medical Imaging Ultrasound Front End, Industrial High-Speed Data Acquisition.
Wireless Base Station Digital Predistortion Feedback
The LTC2150CUJ-12 fits wireless base-station digital predistortion (DPD) feedback loops where a wideband observation receiver samples the PA output to compute PA linearization coefficients. Its 170 Msps sample rate comfortably covers multi-carrier LTE and 5G NR signals up to ~80 MHz instantaneous bandwidth, while 12-bit resolution and 1.25 GHz full-power input bandwidth let designers place the ADC close to the RF mixer output without an extra downconversion stage. SPI programmability of gain and offset simplifies calibration across PA gain states, and the LVDS output banks interface directly to FPGAs in the same chassis with minimal jitter penalty.
Được đề xuất
Cable Modem Downstream Receiver
In DOCSIS 3.x downstream paths, the LTC2150CUJ-12 digitizes a portion of the IF spectrum at sufficient sample rate and dynamic range for downstream QAM demodulation. The 1.8 V analog supply keeps power-per-channel within the tight thermal budget of outdoor plant hardware, and the differential analog input handles the IF signal chain driving the ADC. Combined with a low-jitter clock from an adjacent AD9516 and an LVDS-link FPGA, the LTC2150CUJ-12 enables sub-65 Msps output rates per channel at competitive BOM cost.
Được đề xuất
Wideband Test and Measurement Instrumentation
Instrumentation platforms such as modular digitizers and high-end oscilloscope front-ends benefit from the LTC2150CUJ-12's 12-bit resolution at 170 Msps, capturing fast transient signals in lab automation, ATE, or spectrum-analyzer plug-in cards. The 1.25 GHz analog input bandwidth extends usable analysis range well above Nyquist into the second-Nyquist region for IF-under-test measurements, while integrated LVDS/CMOS flexibility lets the same ADC interface to legacy 5V-tolerant backplanes or modern low-voltage FPGAs. Nap and Sleep modes let the design idle unused acquisition channels to reduce chassis heat.
Được đề xuất
Radar and Lidar Receiver Digitization
Radar and lidar receivers need 100+ Msps ADCs to capture wideband IF returns from chirped or pulsed RF front-ends, and the LTC2150CUJ-12 is well matched to phased-array and SAR subsystems operating at L-, S-, or C-band. Differential analog input lets it drive directly from a low-noise IF strip without large signal transformers, and the LVDS output mode reduces radiated noise into adjacent RF channels on dense digital boards. SPI-controlled gain and offset trim allow per-channel calibration in multi-element arrays, while Nap and Sleep modes support duty-cycled receive windows.
Được đề xuất
Medical Imaging Ultrasound Front End
Ultrasound imaging front-ends stack 16-64 receive channels, each digitizing a baseband or IF signal at 40-80 Msps before beamforming. The LTC2150CUJ-12's 12-bit resolution and 170 Msps ceiling match higher-end channels, and its differential input is compatible with the LNA outputs commonly used in ultrasound probes. Low-power Sleep and Nap modes help meet the thermal budget of handheld probes, while the small 6 x 6 mm QFN footprint keeps channel density high on the receive board.
Được đề xuất
Industrial High-Speed Data Acquisition
Factory-automation applications such as vibration analysis, motor-control feedback, and inline non-destructive testing sample multi-axis sensors at tens of megasamples per second per channel. The LTC2150CUJ-12's single 1.8 V supply aligns with industrial 1.8 V power rails already needed for host FPGAs, and its differential input tolerates the noisy industrial ground environment when paired with an ADC driver. Nap and Sleep modes let unused ADC channels power down between acquisition bursts, reducing system power in a long-running factory installation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC2150CUJ-12 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LTC2151CUJ-12 | LTC2152CUJ-12 | LTC2150CUJ-14 | LTC2159IUK |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bits | 12 bits | 12 bits | 14 bits | 16 bits |
| Sample Rate | 170 Msps | 210 Msps | 250 Msps | 170 Msps | 250 Msps |
| Package | 40-QFN (6x6, UJ) | 40-QFN (6x6, UJ) - same | 40-QFN (6x6, UJ) - same | 40-QFN (6x6, UJ) - same | 40-QFN (6x6 family) - same family |
| Analog Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Pin-Compatible Family Upgrade | Yes (14-bit version) | Yes (14-bit version) | Yes (14-bit version) | Yes (16-bit version) | Cross-family (16-bit) |
| SPI Configuration | Yes | Yes (same register map) | Yes (same register map) | Yes (same register map) | Yes (different register map) |
| Nap / Sleep Modes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Pin-compatible 14-bit upgrade option on the same 40-QFN footprint (vsLTC2150CUJ-14)
- Higher sample rate in the same UJ family (vsLTC2151CUJ-12)
- 1.25 GHz full-power input bandwidth for IF-sampling architectures (vsLTC2174IUKG-14)
Ghi chú thiết kế
Place AVDD and OVDD bypass capacitors as close as possible to the LTC2150CUJ-12 supply pins (within ~2 mm trace length). Use a 0.1 uF X7R plus a 10 uF ceramic or tantalum bulk cap on each supply pair; the QFN package's central exposed pad should be soldered to a low-impedance ground plane, with multiple thermal vias stitching the top and bottom ground layers for low ground-bounce return paths. Estimated: a fully-stitched 4-layer board with 8+ thermal vias under the E-pad keeps the supply decoupling loop area under ~50 mm^2.
Route the differential analog inputs (AIN+, AIN-) and differential clock (CLK+, CLK-) as tightly-coupled 100 ohm differential pairs from the LTC2150CUJ-12 to the driver / clock chip, with no split-plane crossings. Per the datasheet, the analog inputs should be AC-coupled with 0.1 uF capacitors and biased at the VCM voltage using either the internal VCM reference or external op-amp divider. For LVDS data outputs to a high-density FPGA, match trace lengths within ~10 ps (about 2 mm) to keep timing margin.
Do not apply CMOS logic-level clocks directly to CLK+ / CLK-; the LTC2150CUJ-12 expects a low-jitter differential clock (typically sine or PECL/LVDS). Also avoid leaving the analog inputs floating even when the ADC is in Sleep mode - leave AIN+ / AIN- terminated per the datasheet's recommended application circuit to prevent spurious wake-up or excess supply current.
Estimated: at 170 Msps the analog AVDD 1.8 V rail draws approximately 200-250 mA per the LTC2152-12/LTC2150-12 datasheet typical values - design upstream LDOs for at least 600 mA to leave headroom for start-up transients. Using Nap or Sleep modes reduces power by an order of magnitude when sample-rate duty-cycled, which is recommended for probe-based ultrasound and pulsed-radar acquisitions.
Thông tin tuân thủ
Lead-free (#PBF suffix) per Analog Devices ordering information. RoHS and REACH status confirmed compliant on distributor listings. AEC-Q100 not applicable - this is a commercial / industrial ADC, not automotive qualified.
