ADC14C105CISQE - 14-Bit 105 MSPS 1GHz BW ADC | Texas Instruments
MPN: ADC14C105CISQE ✓ AktifADC14C105CISQE Ringkasan
An analog-to-digital converter (ADC) is a data-conversion integrated circuit that translates continuous analog signals into discrete digital codes, enabling digital signal processing, storage, and transmission. Within the broader IC taxonomy, ADCs sit under Data Converters, which also include digital-to-analog converters (DACs). High-speed pipelined ADCs like the ADC14C105 are a sub-class optimized for sample rates from tens to hundreds of MSPS, using a multi-stage switched-capacitor pipeline to balance speed, resolution, and power. They serve as the bridge between the analog front-end (amplifiers, filters) and the digital back-end (FPGA, ASIC, DSP) in mixed-signal systems.
The ADC14C105CISQE delivers 1.0 GHz full-power input bandwidth, allowing accurate digitization of IF-sampled signals well beyond the Nyquist limit. Its internal reference and sample-and-hold minimize external BOM count, while the clock duty-cycle stabilizer compensates for non-50% clock duty cycles, simplifying board-level clock generation. The part provides a data-ready output clock for clean synchronization with downstream logic, and a power-down mode for low-duty-cycle applications that demand energy efficiency. Operating from 3.0V to 3.3V with low power consumption, the part suits both portable and line-powered systems.
Architecturally, the converter uses a pipelined multi-stage topology that quantizes the input across successive 1.5-bit stages, with digital error correction producing a clean 14-bit output word at up to 105 MSPS. The internal reference and high-bandwidth sample-and-hold front-end support single-ended or differential analog inputs, and LVCMOS-compatible digital outputs simplify interface to FPGAs, ASICs, or microprocessors without level shifters.
Typical applications include communications receiver IF digitizers, medical imaging front-ends, portable test and measurement instruments, and multi-channel data acquisition systems. Industrial temperature-grade (-40C to +85C) operation and the compact WQFN-32 footprint make it ideal for space-constrained designs. When designing with this part, pay close attention to analog input network design, including driving-amplifier selection and anti-alias filtering, and route the LVCMOS outputs with controlled impedance to preserve signal integrity at 105 MSPS.
Alternatif penggantian untuk ADC14C105CISQE — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian ADC14C105CISQE (sama faktor bentuk dan footprint) — berbeda di dalam Data Interface, Input Type, Package, Resolution, Package / Case.
ADC14C105CISQE/NOPB
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
ADC14C105CISQ
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC14C080CISQ/NOPB
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC14DS105CISQE/NOPB
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC12C105CISQ
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC12DC080CISQE/NOPB
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC14C105CISQE Rating Maksimal & Karakteristik Listrik
| Resolusi | 14 bits |
| Sample Rate | 105 MSPS |
| Number of Input Channels | 1 |
| Architecture | Pipelined |
| Full-Power Input Bandwidth | 1.0 GHz |
| Tegangan Pemuat | 3.0 V or 3.3 V (single supply) |
| Paket | 32-pin WQFN (5x5 mm) with exposed pad |
| Rentang Suhu Kerja | -40 C to +85 C (industrial) |
| Reference | Internal |
| Sample-and-Hold | Integrated |
| Clock Duty-Cycle Stabilizer | Yes |
| Data-Ready Output Clock | Yes |
| Power-Down Mode | Yes |
| Digital Output Type | LVCMOS |
| Status RoHS | Compliant |
Konfigurasi Pin ADC14C105CISQE
| Pin produk 1 | VIN+ — Differential analog input positive |
| Pin produk 2 | VIN- — Differential analog input negative |
| Pin produk 3 | VCM — Common-mode voltage output |
| Pin produk 4 | REFT — Top reference decoupling |
| Pin produk 5 | REFB — Bottom reference decoupling |
| Pin produk 6 | REFOUT — Internal reference output |
| Pin produk 7 | REFIN — External reference input |
| Pin produk 8 | AGND — Analog ground |
| Pin produk 9 | AVDD — Analog 3.3V supply |
| Pin produk 10 | CLK+ — Differential clock input positive |
| Pin produk 11 | CLK- — Differential clock input negative |
| Pin produk 12 | DGND — Digital ground |
| Pin produk 13 | DRVDD — Digital output driver supply |
| Pin produk 14 | DRGND — Digital output ground |
| Pin produk 15 | D0 — Data output bit 0 (LSB) |
| Pin produk 16 | D1 — Data output bit 1 |
| Pin produk 17 | D2 — Data output bit 2 |
| Pin produk 18 | D3 — Data output bit 3 |
| Pin produk 19 | D4 — Data output bit 4 |
| Pin produk 20 | D5 — Data output bit 5 |
| Pin produk 21 | D6 — Data output bit 6 |
| Pin produk 22 | D7 — Data output bit 7 |
| Pin produk 23 | D8 — Data output bit 8 |
| Pin produk 24 | D9 — Data output bit 9 |
| Pin produk 25 | D10 — Data output bit 10 |
| Pin produk 26 | D11 — Data output bit 11 |
| Pin produk 27 | D12 — Data output bit 12 |
| Pin produk 28 | D13 — Data output bit 13 (MSB) |
| Pin produk 29 | DR — Data ready output clock |
| Pin produk 30 | PD — Power-down input (active high) |
| Pin produk 31 | DCS — Duty-cycle stabilizer enable |
| Pin produk 32 | NC — Not connected (per datasheet) |
Aplikasi Umum
ADC14C105CISQE cocok untuk 6 aplikasis: Communications Receiver IF Digitizer, Medical Imaging Front-End, Portable Test & Measurement Instruments, Multi-Channel Data Acquisition Systems, Radar Signal Processing Front-End, Software-Defined Radio (SDR) Baseband.
Communications Receiver IF Digitizer
The ADC14C105CISQE's 1.0 GHz full-power input bandwidth and 105 MSPS sample rate make it a strong fit for communications receiver IF sampling. The wide analog front-end supports direct digitisation of intermediate-frequency signals well above the Nyquist limit, eliminating an analog down-conversion mixer stage and simplifying the receiver signal chain. Placed downstream of the SAW filter and a low-noise IF amplifier, the ADC converts the conditioned IF to a 14-bit LVCMOS stream that an FPGA can channelise digitally. The clock duty-cycle stabilizer relaxes clock-routing constraints on the PCB, while the integrated sample-and-hold captures fast IF transients accurately. Compared with a 12-bit part, the 14-bit resolution provides an additional ~2 ENOB for higher dynamic range in dense signal environments.
Direkomendasikan
Medical Imaging Front-End
In ultrasound and other medical imaging front-ends, the ADC14C105CISQE offers 14-bit resolution at 105 MSPS to capture return-echo detail with high dynamic range. According to TI datasheet performance, the 1.0 GHz input bandwidth preserves harmonic content of short pulse echoes, and the LVCMOS digital outputs interface cleanly to an FPGA beamformer without level shifters. The internal sample-and-hold removes the need for an external T/H amplifier, reducing BOM cost on the analog front-end. The 32-WQFN (5x5) footprint is small enough for multi-channel probe PCBs. A low-power power-down mode supports battery-portable cart designs between scans.
Direkomendasikan
Portable Test & Measurement Instruments
Handheld oscilloscopes, spectrum analysers, and data loggers benefit from the ADC14C105CISQE's combination of 105 MSPS sample rate, 1.0 GHz analog bandwidth, and single 3.3V supply. The device's low power consumption extends battery life in field instruments, while the power-down mode cuts draw between measurement acquisitions. The 32-WQFN (5x5) package fits within dense handheld layouts, and the integrated reference and sample-and-hold reduce the analog BOM count. The clock duty-cycle stabilizer tolerates a wider range of crystal-oscillator waveforms, simplifying clock-tree design for cost-sensitive instrument products.
Direkomendasikan
Multi-Channel Data Acquisition Systems
The ADC14C105CISQE serves as the core converter in modular multi-channel data-acquisition cards where each channel needs 14-bit resolution at 100+ MSPS. Multiple ADC14C105CISQE devices can share a common 105 MHz clock and synchronise via the data-ready output, while the LVCMOS outputs route to an FPGA aggregation block. The industrial -40C to +85C temperature range supports factory-floor deployment, and the 5x5 mm WQFN footprint allows high channel density on the acquisition board. The internal sample-and-hold ensures channel-to-channel phase coherence, important for simultaneous-sampling applications.
Direkomendasikan
Radar Signal Processing Front-End
Pulse-Doppler radar and short-range industrial radar digitise IF outputs at 100+ MSPS; the ADC14C105CISQE provides 14-bit resolution, 105 MSPS throughput, and 1.0 GHz input bandwidth for accurate echo capture. Per the TI datasheet, the wide analog front-end handles pulse rise times typical of short-range radar, while the integrated sample-and-hold preserves Doppler phase information across the 105 MSPS clock. The 32-WQFN package and industrial temperature grade suit ruggedised outdoor radar enclosures, and the LVCMOS outputs drive an FPGA FFT engine for real-time spectral analysis.
Direkomendasikan
Software-Defined Radio (SDR) Baseband
In wideband software-defined radio baseband cards, the ADC14C105CISQE provides 14-bit dynamic range and 105 MSPS sample rate to digitise zero-IF or low-IF signals directly into an FPGA. The 1.0 GHz full-power bandwidth supports tunable local-oscillator architectures, and the clock duty-cycle stabilizer accommodates the FPGA-MMCM-generated clocks typical of SDR platforms. The 3.3V single-supply operation simplifies power-tree design alongside FPGA rails, and the low-power dissipation allows fanless SDR enclosures. Industrial temperature grade supports outdoor and vehicular SDR deployments.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ADC14C105CISQE — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ADC14C105CISQE/NOPB | ADC14C105CISQ | ADC14C080CISQ/NOPB | ADC14DS105CISQE/NOPB | ADC12C105CISQ | ADC12DC080CISQE/NOPB |
|---|---|---|---|---|---|---|---|
| Package | 32-WQFN (5x5) | 32-WQFN (5x5) - same | 32-WQFN (5x5) - same | 32-WQFN (5x5) - same | 32-WQFN (5x5) - same | 32-WQFN (5x5) - same | 32-WQFN (5x5) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 14 bits | 14 bits | 14 bits | 14 bits | 14 bits (dual channel) | 12 bits | 12 bits (dual channel) |
| Sample Rate | 105 MSPS | 105 MSPS | 105 MSPS | 80 MSPS | 105 MSPS | 105 MSPS | 80 MSPS |
| Input Bandwidth | 1.0 GHz | 1.0 GHz | 1.0 GHz | 1.0 GHz | 1.0 GHz | 1.0 GHz | 1.0 GHz |
| Number of Channels | 1 | 1 | 1 | 1 | 2 | 1 | 2 |
| Supply Voltage | 3.0V / 3.3V | 3.0V / 3.3V | 3.0V / 3.3V | 3.0V / 3.3V | 3.0V / 3.3V | 3.0V / 3.3V | 3.0V / 3.3V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Diferensiator Kunci
- 1.0 GHz full-power input bandwidth (vsADC14C080CISQ/NOPB)
- 14-bit resolution at 105 MSPS (vsADC12C105CISQ)
- Integrated sample-and-hold and reference (vsExternal T/H solutions)
- Single 3.3V supply operation (vsDual-supply 5V ADCs)
Catatan Desain
Estimated: at 105 MSPS the LVCMOS digital outputs of the ADC14C105CISQE toggle at 105 MHz, so uncontrolled-impedance PCB traces cause severe ringing and degrade SNR. Route outputs with 50 ohm controlled-impedance traces, keep trace lengths matched within 5 mm, and place 22 ohm series damping resistors near the ADC pins. Skipping these steps commonly produces 6-10 dB SNR loss in production boards.
The exposed thermal pad of the 32-WQFN must be soldered to a continuous ground plane to provide the low-impedance analog return path. Star-route AVDD, DRVDD, and AGND to a ferrite-bead-isolated analog supply to prevent digital switching noise from coupling into the analog front-end. Place 0.1 uF X7R decoupling capacitors within 2 mm of each supply pin, with a 10 uF bulk capacitor on the AVDD rail.
The differential analog input network must present a low-impedance, well-matched load to the driving amplifier. Use a transformer or differential op-amp driver such as the LMH6552 to convert the single-ended signal to the differential VIN+/VIN- input. The VCM pin provides a mid-rail reference to bias the input network, eliminating the need for external biasing. Tune anti-alias filter cutoff to about 40-45 MHz to provide >20 dB attenuation at the first Nyquist zone edge.
Use a low-jitter clock source such as a dedicated clock generator or a clean crystal-oscillator IC; clock jitter directly limits SNR per the formula SNR = 20*log10(1/(2*pi*f_in*t_jitter)). At 105 MSPS with a 70 MHz input, an RMS jitter of 1 ps is needed to achieve 65 dBFS SNR. The internal duty-cycle stabilizer (DCS) compensates for non-50% duty clocks but does NOT reduce jitter.
Informasi Konformitas
RoHS and lead-free per TI product page (NOPB suffix denotes lead-free finish). Not AEC-Q100 qualified; choose an automotive-grade part for vehicular designs. Halogen-free status not explicitly stated in retrieved data.
