ADC14DS105AISQ/NOPB - Dual 14-Bit 105 MSPS LVDS ADC
MPN: ADC14DS105AISQ/NOPB ✓ Hoạt độngADC14DS105AISQ/NOPB Tóm tắt
An ADC (analog-to-digital converter) translates continuous analog signals into discrete digital codes for processing by FPGAs, DSPs, or microcontrollers. Within the broader taxonomy, the ADC14DS105 sits in the high-speed pipelined ADC family (ADC -> data converter -> signal chain IC -> mixed-signal IC), chosen when both channels and high sample rates are required simultaneously. Pipelined ADCs use a multi-stage architecture with per-stage residue amplification to achieve high conversion rates at moderate resolution, making them well-suited for communications, imaging, and test-and-measurement signal chains.
Key features of the ADC14DS105AISQ/NOPB include dual 14-bit resolution, 105 MSPS per-channel sampling, serial LVDS outputs that minimize pin count and ease PCB routing at high data rates, and selectable internal or external voltage reference. The 60-WQFN package with exposed pad delivers low thermal resistance for sustained high-speed operation, while the serial LVDS interface reduces the FPGA I/O pin count compared to parallel CMOS ADC interfaces.
The device uses a proprietary CMOS pipeline architecture with input S/H (sample-and-hold), multi-bit per stage redundancy for linearity correction, and an on-chip reference. The serialized LVDS interface transmits data on a small number of differential pairs and supports self-test and synchronization features that simplify multi-device synchronization.
Typical applications include communications receivers, multi-channel IF digitizers, medical imaging front-ends, test-and-measurement digitizers, and phased-array radar or beamforming subsystems. The 105 MSPS rate combined with dual channels enables I/Q digitizers and wideband dual-channel acquisition in a single IC.
Designers should note that LVDS routing requires matched-length traces, controlled 100-ohm differential impedance, and AC coupling at the FPGA receiver. Provide adequate local decoupling on AVDD and use a solid ground plane under the exposed pad for stable operation.
This page consolidates manufacturer specifications, distributor pricing, drop-in alternatives and application context not aggregated on the original manufacturer datasheet, providing AEO-optimized information for engineers sourcing dual-channel high-speed ADCs.
Bộ thay thế dễ dàng lắp đặt cho ADC14DS105AISQ/NOPB — 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 ADC14DS105AISQ/NOPB (cùng hình factor và footprint) — khác nhau ở Package, Input Type, Number of Channels, Data Interface, Resolution.
ADC14DS105CISQ/NOPB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADC14DS105AISQE/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC14DS105CISQE/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADC14DS105AISQ/NOPB Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bits |
| Number of Channels | 2 (simultaneous sampling) |
| Sampling Rate (per channel) | 105 MSPS |
| Architecture | Pipelined CMOS |
| Input Type | Differential |
| Data Interface | Serial LVDS |
| Number of Inputs | 2 |
| Output Format | Serial LVDS, 2 lanes |
| Voltage Reference | Internal or external (selectable) |
| Sample-and-Hold Ratio | 1:1 |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 60-WQFN (9x9 mm) with exposed pad |
| Số chân | 60 |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Trạng thái RoHS | Compliant |
| Lead Free | Yes |
Cấu hình chân ADC14DS105AISQ/NOPB
| Chân 1 | VA1 — Analog supply for channel 1 |
| Chân 2 | GND — Ground reference |
| Chân 3 | IN1+ — Channel 1 positive differential input |
| Chân 4 | IN1- — Channel 1 negative differential input |
| Chân 5 | VBIAS — Bias voltage (per datasheet) |
| Chân 6 | GND — Ground reference |
| Chân 7 | VA1 — Analog supply for channel 1 |
| Chân 8 | VA2 — Analog supply for channel 2 |
| Chân 9 | IN2+ — Channel 2 positive differential input |
| Chân 10 | IN2- — Channel 2 negative differential input |
| Chân 11 | GND — Ground reference |
| Chân 12 | VA2 — Analog supply for channel 2 |
| Chân 13 | VREF — Voltage reference input/output |
| Chân 14 | GND — Ground reference |
| Chân 15 | VD — Digital supply |
| Chân 16 | GND — Ground reference |
| Chân 17 | TEST — Test mode (per datasheet) |
| Chân 18 | SYNC — Synchronization input |
| Chân 19 | CLKP — Differential clock positive |
| Chân 20 | CLKN — Differential clock negative |
| Chân 21 | GND — Ground reference |
| Chân 22 | VD — Digital supply |
| Chân 23 | OUT1P — Differential LVDS output lane 1 positive |
| Chân 24 | OUT1N — Differential LVDS output lane 1 negative |
| Chân 25 | GND — Ground reference |
| Chân 26 | OUT2P — Differential LVDS output lane 2 positive |
| Chân 27 | OUT2N — Differential LVDS output lane 2 negative |
| Chân 28 | GND — Ground reference |
| Chân 29 | VD — Digital supply |
| Chân 30 | GND — Ground reference |
| Chân 31 | DR1P — Data rate clock lane 1 positive (per datasheet) |
| Chân 32 | DR1N — Data rate clock lane 1 negative |
| Chân 33 | GND — Ground reference |
| Chân 34 | DR2P — Data rate clock lane 2 positive |
| Chân 35 | DR2N — Data rate clock lane 2 negative |
| Chân 36 | GND — Ground reference |
| Chân 37 | VD — Digital supply |
| Chân 38 | GND — Ground reference |
| Chân 39 | NC — Not connected (per datasheet) |
| Chân 40 | MODE — Mode selection (per datasheet) |
| Chân 41 | SDOUT — Serial data output (per datasheet) |
| Chân 42 | SDEN — Serial data enable |
| Chân 43 | SCLK — Serial configuration clock |
| Chân 44 | CSB — Chip select / configuration bar |
| Chân 45 | VD — Digital supply |
| Chân 46 | GND — Ground reference |
| Chân 47 | NC — Not connected (per datasheet) |
| Chân 48 | NC — Not connected (per datasheet) |
| Chân 49 | VA1 — Analog supply for channel 1 |
| Chân 50 | GND — Ground reference |
| Chân 51 | VA1 — Analog supply for channel 1 |
| Chân 52 | VA2 — Analog supply for channel 2 |
| Chân 53 | GND — Ground reference |
| Chân 54 | VA2 — Analog supply for channel 2 |
| Chân 55 | GND — Ground reference |
| Chân 56 | VA2 — Analog supply for channel 2 |
| Chân 57 | GND — Ground reference |
| Chân 58 | NC — Not connected (per datasheet) |
| Chân 59 | NC — Not connected (per datasheet) |
| Chân 60 | GND — Ground / exposed pad connection |
Ứng dụng tiêu biểu
ADC14DS105AISQ/NOPB phù hợp cho 6 Áp dụngs: Communications IF / I/Q Digitizer, Test & Measurement Digitizer Front-End, Medical Ultrasound Imaging Front-End, Industrial Multi-Channel Data Acquisition, Software Defined Radio Wideband Front-End, Multi-Channel Wireless Baseband.
Communications IF / I/Q Digitizer
The ADC14DS105AISQ/NOPB is well matched to dual-channel IF digitization in communications receivers. Its 14-bit resolution at 105 MSPS per channel captures the dynamic range needed for demodulating high-order QAM and OFDM waveforms, while the simultaneous sampling on two channels handles I/Q demodulation with minimal channel-to-channel skew. The serial LVDS output streams 14-bit data on a small number of differential pairs, simplifying PCB routing into an FPGA and isolating the analog domain from noisy digital switching.
Được đề xuất
Test & Measurement Digitizer Front-End
For broadband oscilloscope and arbitrary waveform digitizer front-ends, the ADC14DS105AISQ/NOPB delivers 14-bit resolution at 105 MSPS per channel in a single IC. Pipelined ADCs in this speed range offer low aperture jitter (typically < 0.5 ps) and excellent SNR, allowing wideband signal capture with good amplitude accuracy. Dual channels are ideal for two-channel scope front-ends; serial LVDS cleanly fans into a Kintex- or Artix-class FPGA for waveform DSP.
Được đề xuất
Medical Ultrasound Imaging Front-End
Beamforming and pre-beamform ultrasound digitizers benefit from a low-power dual-channel ADC like the ADC14DS105AISQ/NOPB. Each transducer element captures a 14-bit sample at up to 105 MSPS, and the differential inputs reject common-mode pickup from the analog front-end. Multiple ADC14DS105 devices can be paralleled for higher channel counts, with the serial LVDS digital output reducing channel-to-channel skew during high-density PCB routing in dense probe assemblies.
Được đề xuất
Industrial Multi-Channel Data Acquisition
In phased-array radar, sonar and vibration analysis front-ends, the ADC14DS105AISQ/NOPB provides two synchronized 14-bit samples at 105 MSPS in one IC. The differential inputs reject common-mode noise from motors, drives and field cabling, while the pipelined architecture produces consistent latency across channels, which is critical for cross-channel phase calculations. The serial LVDS interface minimizes FPGA pin count per channel and simplifies synchronization across many ADC ICs.
Được đề xuất
Software Defined Radio Wideband Front-End
Wideband SDR receivers often need 50-100 MHz of IF bandwidth digitized with good linearity. The ADC14DS105AISQ/NOPB samples two channels at 105 MSPS, providing headroom for direct IF sampling in HF/VHF SDRs and supporting dual-channel diversity receivers. The differential inputs couple cleanly to LNA / mixer stages, while the serialized LVDS output connects directly to Zynq or Kintex-class FPGAs running the demodulation stack in fabric.
Được đề xuất
Multi-Channel Wireless Baseband
Multi-radio baseband platforms can place the ADC14DS105AISQ/NOPB on each antenna branch to capture 14-bit, 105 MSPS I/Q streams, supporting diversity or MIMO front-ends. The internal selectable reference simplifies BOM by avoiding a dedicated external reference IC in lower-cost designs, while external reference mode enables multiple ADC14DS105 devices to share a system clock for coherent sampling across RF chains.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADC14DS105AISQ/NOPB — 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 | ADC14DS105CISQ/NOPB | ADC14DS105AISQE/NOPB | ADC14DS105CISQE/NOPB |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 60-WQFN (9x9) | 60-WQFN (9x9) - same | 60-WQFN (9x9) - same | 60-WQFN (9x9) - same |
| Resolution | 14 bits | 14 bits | 14 bits | 14 bits |
| Number of Channels | 2 (simultaneous) | 2 | 2 | 2 |
| Sampling Rate | 105 MSPS / channel | 105 MSPS | 105 MSPS | 105 MSPS |
| Performance Grade | Grade A (tight SFDR/ENOB) | Grade C | Grade A | Grade C |
| Data Interface | Serial LVDS | Serial LVDS | Serial LVDS | Serial LVDS |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| RoHS | Compliant | Compliant | Compliant | Compliant |
| Packaging | Tape & Reel (TR) | Tape & Reel | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- Grade A bin for tight linearity and noise performance (vsADC14DS105CISQ/NOPB)
- Identical die, distinct reel code (E suffix) (vsADC14DS105AISQE/NOPB)
- Full 14-bit resolution at the rated 105 MSPS per channel (vsADC14DS105CISQE/NOPB)
Ghi chú thiết kế
LVDS clock and data lines must be routed as 100-ohm differential pairs with matched lengths within the tolerance given in the datasheet (typically < 150 mils skew lane-to-lane). Keep LVDS pairs over a continuous ground reference plane and away from noisy supplies; insert AC-coupling capacitors close to the receiver if the FPGA supply differs from the ADC's LVDS common-mode range. This preserves the SFDR margins of the Grade A bin.
Estimated: at 105 MSPS per channel with VA = 1.8 V and VD = 1.8 V, the ADC14DS105 family draws on the order of 350-500 mW total. Use Pi-style filtering (small ferrite + bulk + decoupling cap) on each supply rail, with 0.1 uF X7R + 10 uF bulk ceramics placed within 5 mm of each supply pin. Star-route analog ground (GND pins and exposed pad) back to a quiet ground pour separate from the digital return. Estimated based on datasheet typical supply currents and should be re-derived from the manufacturer's electrical characteristics table for the exact operating conditions.
Do not operate the exposed pad without soldering it to the PCB ground/power plane; thermal rise and latch-up risk both increase. Do not drive the differential clock with a single-ended source unless an LVDS driver is interposed; the converter's aperture jitter is highly sensitive to clock phase noise, so use a low-jitter clock like an LMK device or a high-Q crystal.
Place the input coupling network (typically a transformer or fully differential op-amp driver) close to INx+/INx- to limit the analog bandwidth at the ADC input. Apply proper termination (commonly 100-ohm differential or per the recommended evaluation board schematic) to avoid reflections that manifest as spurs in the FFT output.
Thông tin tuân thủ
RoHS compliant per TI / DigiKey product pages; commercial-grade (not AEC-Q100) ADC; identical-pin same-package variants (CISQ, AISQE, CISQE) are also RoHS compliant.
