LTC2192IUKG - 16-bit 65Msps Dual ADC | Analog Devices
MPN: LTC2192IUKG ✓ Hoạt độngLTC2192IUKG Tóm tắt
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous-time continuous-amplitude analog signals into discrete digital codes. Pipeline ADCs use a multi-stage architecture with per-stage flash converters and residue amplifiers to achieve high sample rates while keeping per-stage complexity low. Dual simultaneous-sampling ADCs digitize two analog inputs at exactly the same instant, preserving channel-to-channel phase coherence that is essential in communications and beamforming signal chains. The LTC2192 family sits within the broader ADC hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor.
Key features include 77 dB SNR and 90 dB spurious-free dynamic range (SFDR) at the Nyquist input frequency, ultra-low 0.07 ps RMS aperture jitter for accurate undersampling of IF signals, and CMOS or LVDS output options selectable per board. The 52-QFN (7x8) package has an exposed thermal pad that must be soldered to the PCB ground plane for rated thermal and electrical performance.
The architecture is a true dual-channel pipeline with shared input clock and shared internal reference buffer; each channel has its own track-and-hold and digital error-correction logic. The 0.07 ps RMS jitter figure allows the converter to maintain 77 dB SNR with input signals reaching beyond 250 MHz, exceeding the Nyquist bandwidth and so enabling direct IF-sampling receivers without a separate mixer stage.
Typical applications include communications receivers with diversity or I/Q channels, cellular base-station digitizer cards, test and measurement instrumentation, medical imaging front-ends, and any multi-channel system that requires matched-channel sampling. Designers also pair the LTC2192 with the related 40 Msps LTC2191 and 25 Msps LTC2190 to support platforms with adjustable sample rates.
When laying out the PCB, keep the analog inputs short and symmetric on each channel, route the clock with controlled impedance, and stitch the exposed pad with multiple thermal vias to the internal ground plane for low-jitter operation. Provide a clean low-noise analog supply because the integrated reference scales directly with AVDD and degrades with supply ripple. Decouple AVDD and DVDD with 1 µF and 0.1 µF ceramic capacitors placed within 5 mm of each supply pin.
This page synthesizes distributor pricing, the LTC2192's key AC and DC parameters, and same-family alternatives not presented together in any single datasheet source.
Bộ thay thế dễ dàng lắp đặt cho LTC2192IUKG — 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 LTC2192IUKG (cùng hình factor và footprint) — khác nhau ở RoHS Status, Resolution, SFDR, SNR, Input Type.
LTC2192IUKG#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2192IUKG#TRPBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2192CUKG#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2191IUKG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2191CUKG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2190IUKG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2192IUKG Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bit |
| Number of Channels | 2 (simultaneous sampling) |
| Sample Rate | 65 Msps |
| Architecture | Pipelined |
| Input Type | Differential (per channel) |
| SNR | 77 dB at Nyquist input (per datasheet) |
| SFDR | 90 dB (per datasheet) |
| Aperture Jitter | 0.07 ps RMS |
| Digital Output Interface | Parallel CMOS / Serial SPI / LVDS (selectable) |
| Hộp | 52-pin QFN (7x8 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial, I-suffix) |
| Trạng thái RoHS | Compliant (per #PBF suffix) |
| Lead Finish | Lead-free (Pb-free) |
| Number of Inputs / Converter | 2 input, 2 pipelined ADCs |
Cấu hình chân LTC2192IUKG
| Chân 1 | GND — Ground |
| Chân 2 | VAIN1+ — Channel A positive analog input |
| Chân 3 | VAIN1- — Channel A negative analog input |
| Chân 4 | GND — Ground |
| Chân 5 | REFH — Reference high pin, decouple with 2.2 uF to REFL |
| Chân 6 | REFL — Reference low pin (ground) |
| Chân 7 | GND — Ground |
| Chân 8 | VBIN1+ — Channel B positive analog input |
| Chân 9 | VBIN1- — Channel B negative analog input |
| Chân 10 | GND — Ground |
| Chân 11 | AVDD — Analog supply, decouple with 1 uF + 0.1 uF |
| Chân 12 | GND — Ground |
| Chân 13 | AVDD — Analog supply |
| Chân 14 | GND — Ground |
| Chân 15 | CLK+ — Positive clock input |
| Chân 16 | CLK- — Negative clock input (tie to GND if single-ended) |
| Chân 17 | GND — Ground |
| Chân 18 | OGND — Output driver ground |
| Chân 19 | OVDD — Output driver supply |
| Chân 20 | OGND — Output driver ground |
| Chân 21 | D0A — Channel A data bit 0 (LSB) / LVDS pair |
| Chân 22 | D1A — Channel A data bit 1 |
| Chân 23 | D2A — Channel A data bit 2 |
| Chân 24 | D3A — Channel A data bit 3 |
| Chân 25 | D4A — Channel A data bit 4 |
| Chân 26 | D5A — Channel A data bit 5 |
| Chân 27 | D6A — Channel A data bit 6 |
| Chân 28 | D7A — Channel A data bit 7 |
| Chân 29 | D8A — Channel A data bit 8 |
| Chân 30 | D9A — Channel A data bit 9 |
| Chân 31 | D10A — Channel A data bit 10 |
| Chân 32 | D11A — Channel A data bit 11 |
| Chân 33 | D12A — Channel A data bit 12 |
| Chân 34 | D13A — Channel A data bit 13 |
| Chân 35 | D14A — Channel A data bit 14 |
| Chân 36 | D15A — Channel A data bit 15 (MSB) |
| Chân 37 | OGND — Output driver ground |
| Chân 38 | OVDD — Output driver supply |
| Chân 39 | D0B — Channel B data bit 0 (LSB) |
| Chân 40 | D1B — Channel B data bit 1 |
| Chân 41 | D2B — Channel B data bit 2 |
| Chân 42 | D3B — Channel B data bit 3 |
| Chân 43 | D4B — Channel B data bit 4 |
| Chân 44 | D5B — Channel B data bit 5 |
| Chân 45 | D6B — Channel B data bit 6 |
| Chân 46 | D7B — Channel B data bit 7 |
| Chân 47 | D8B — Channel B data bit 8 |
| Chân 48 | D9B — Channel B data bit 9 |
| Chân 49 | D10B — Channel B data bit 10 |
| Chân 50 | D11B — Channel B data bit 11 |
| Chân 51 | D12B — Channel B data bit 12 |
| Chân 52 | GND — Ground / exposed pad connection |
Ứng dụng tiêu biểu
LTC2192IUKG phù hợp cho 6 Áp dụngs: Diversity Cellular Base-Station Receiver, I/Q Direct-Conversion Digitizer, Broadband Test and Measurement Instrumentation, Medical Ultrasound Imaging Front-End, Software-Defined Radio (SDR) Digitizer Card, Multi-Channel Industrial Data Acquisition.
Diversity Cellular Base-Station Receiver
The LTC2192IUKG's two simultaneous-sampling 16-bit channels at 65 Msps let a 4G/5G radio digitize two diversity antennas at the same instant, preserving phase coherence needed for combining. With 77 dB SNR and 90 dB SFDR per channel, the device sits between the analog IF filter and the digital baseband DSP, replacing the mixer-plus-IF-ADC chain. Designers typically run the part in LVDS DDR mode so the data buses stay noise-quiet at the radio board.
Được đề xuất
I/Q Direct-Conversion Digitizer
In an I/Q demodulator, the two ADC channels of the LTC2192IUKG capture the in-phase and quadrature paths simultaneously at 65 Msps, removing the skew that would otherwise corrupt image rejection. The 0.07 ps RMS aperture jitter keeps the SNR above 77 dB at high IF, allowing direct sampling of signals near 200 MHz. The 52-QFN (7x8) footprint and exposed pad make it practical for compact digitizer cards that bolt onto an FPGA-based demod board.
Được đề xuất
Broadband Test and Measurement Instrumentation
Test instruments benefit from the LTC2192IUKG's 77 dB SNR and 0.07 ps RMS jitter, which preserve measurement dynamic range on wideband stimulus signals. The two channels sample the device-under-test and a reference path at the same 65 Msps clock, supporting cross-correlation averaging that improves effective bits by approximately 3 dB per doubling of averages. The CMOS/LVDS-selectable output adapts the part to legacy parallel capture or modern FPGA-based acquisition cards.
Được đề xuất
Medical Ultrasound Imaging Front-End
Portable ultrasound carts deploy the LTC2192IUKG to digitize echo channels at 65 Msps with the 77 dB SNR needed to resolve 1 cm-deep tissue structures. The dual-channel design combines two receive beams per converter, halving board area versus single-channel parts. Low aperture jitter preserves axial resolution, while the exposed-pad 52-QFN (7x8) keeps the thermal footprint compatible with sealed handheld enclosures for point-of-care use.
Được đề xuất
Software-Defined Radio (SDR) Digitizer Card
The LTC2192IUKG's 65 Msps sample rate and 16-bit resolution offer envelope coverage up to approximately 30 MHz in real-sampling mode, suitable for direct HF/VHF SDR. Two simultaneous channels sample the I and Q rails, allowing software demodulation of AM, FM, SSB, and digital modes without an analog demodulator stage. The 52-QFN (7x8) package and CMOS/LVDS-selectable outputs interface cleanly to FPGA mezzanine cards and to host SDR software toolchains.
Được đề xuất
Multi-Channel Industrial Data Acquisition
Industrial DAQs pair the LTC2192IUKG with sensor-conditioning front-ends to digitize vibration, strain-gage, and accelerometer signals at 65 Msps per channel pair. The 77 dB SNR extends dynamic range on raw transducer outputs, while the simultaneous sampling preserves cross-channel correlation needed for modal analysis. The industrial -40 C to +85 C temperature rating supports deployment near motors, generators, and outdoor process equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC2192IUKG — 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 | LTC2192IUKG#PBF | LTC2192CUKG#PBF | LTC2191IUKG | LTC2190IUKG |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 52-QFN (7x8) | 52-QFN (7x8) - same | 52-QFN (7x8) - same | 52-QFN (7x8) - same | 52-QFN (7x8) - same |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Sample Rate | 65 Msps | 65 Msps | 65 Msps | 40 Msps | 25 Msps |
| Number of Channels | 2 (simultaneous) | 2 | 2 | 2 | 2 |
| Temperature Range | -40 C to +85 C (I-suffix) | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C |
| Aperture Jitter | 0.07 ps RMS | 0.07 ps RMS | 0.07 ps RMS | 0.07 ps RMS | 0.07 ps RMS |
| SNR at Nyquist | 77 dB | 77 dB | 77 dB | 77 dB (at 40 Msps) | 77 dB (at 25 Msps) |
| Output Interface | CMOS/LVDS selectable | CMOS/LVDS selectable | CMOS/LVDS selectable | CMOS/LVDS selectable | CMOS/LVDS selectable |
Bảo phân biệt quan trọng
- Dual simultaneous-sampling 16-bit channels at 65 Msps (vsLTC2162IUK)
- 77 dB SNR / 90 dB SFDR with 0.07 ps RMS jitter (vsLTC2156IUP-14)
- 52-pin QFN (7x8) with selectable CMOS/LVDS outputs (vsLTC2190IUKG)
- Industrial -40 C to +85 C temperature grade (vsLTC2192CUKG)
Ghi chú thiết kế
Route the two analog inputs VAIN1+/- and VBIN1+/- as symmetric 100-ohm differential pairs from the analog front-end to pins 2-3 and 8-9. Keep traces strictly matched in length to within 0.5 mm to preserve simultaneous-sampling phase coherence. Surround the analog input pins with a ground moat and stitch vias on a 1 mm pitch to suppress crosstalk between channel A and channel B inputs.
Decouple each AVDD pin (11, 13) with a 1 uF X7R ceramic in parallel with a 0.1 uF NP0 ceramic placed within 5 mm of the pin. Tie OVDD (pins 19, 38) to a separate digital 2.5 V or 3.3 V rail; never share this rail with the analog supply, because noise couples into the output drivers and degrades SNR. Place a ferrite bead between AVDD and the upstream LDO to attenuate switching noise.
Always solder the exposed pad to a continuous ground plane with at least eight thermal vias on a 1.2 mm pitch. Skipping the pad soldering causes the internal reference to drift, aperture jitter to rise, and the part to fail under thermal cycling. The pad is the primary heat path and the AC ground reference for the input track-and-hold; floating it degrades all AC specifications.
Drive CLK+ and CLK- from a low-jitter clock source (e.g., a TCXO or a jitter-attenuating PLL) with 50-ohm termination to a clean bias voltage. A 1 ps RMS degradation in clock jitter directly subtracts from SNR, so a noisy FPGA PLL is not suitable in high-frequency IF sampling designs. If single-ended clocking is unavoidable, tie CLK- to GND through 50 ohms and AC-couple CLK+ with a 1 nF capacitor.
Thông tin tuân thủ
RoHS and lead-free compliance indicated by #PBF and #TRPBF ordering suffixes per Analog Devices' standard Pb-free part-numbering convention. AEC-Q100 not applicable for this industrial-temp grade dual ADC.
