LTC2241CUP-10 - 10-Bit 210Msps ADC, 64-QFN | Analog Devices
N.º da peça: LTC2241CUP-10 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $41.4 | $41,40 |
| 10 | $37.26 | $372,60 |
| 100 | $31.46 | $3.146,00 |
| 500 | $27.85 | $13.925,00 |
| 1.000 | $24.84 | $24.840,00 |
LTC2241CUP-10 Visão geral
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous-time analog signals into discrete digital codes for downstream processing by DSPs, microcontrollers, or FPGAs. Within the converter family hierarchy, the LTC2241-10 belongs to the pipelined-architecture sub-type, which uses multiple low-resolution stages to balance sample rate and resolution, sitting between successive-approximation (SAR) converters (low speed, high accuracy) and flash converters (very high speed, low resolution). Pipelined ADCs dominate the 10-200 Msps + 8-16 bit design space used in communications infrastructure, medical imaging, and test equipment.
Key features include selectable input ranges of ±0.5 V or ±1 V, no-missing-codes guaranteed over the full operating range, optional clock duty-cycle stabilizer for jitter-sensitive systems, and dedicated shutdown/nap power-saving modes. The 64-QFN package integrates the exposed pad for thermal dissipation and a clean analog/digital ground split. The data-ready output clock simplifies downstream FPGA data capture timing.
Typical applications include cellular base-station receiver IF digitizers, cable-headend downstream/upstream QAM demodulators, digital oscilloscope front ends, medical ultrasound beam-former channels, radar/sonar IF sampling, and software-defined radio (SDR) platforms where wideband undersampling is required. The pin-compatible LTC2242-10 family member extends the offering to 250 Msps for systems that need extra timing headroom on the same PCB layout.
Alternativas drop-in para LTC2241CUP-10 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com LTC2241CUP-10 (mesmo formato e footprint) — diferindo em Package, Sample Rate, SFDR, SNR, Power Dissipation.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
LTC2242CUP-10
✅ Drop-In✓ Em estoque
$31 / unidade
Ver ficha técnica →LTC2240IUP-10
✅ Drop-In✓ Em estoque
$18.75 / unidade
Ver ficha técnica →LTC2221CUP
✅ Drop-In✓ Em estoque
$34.2 / unidade
Ver ficha técnica →LTC2241CUP-10 Classificações máximas e características elétricas
| Resolução | 10 bit |
| Sample Rate | 210 Msps |
| Architecture | Pipelined |
| Number of Channels | 1 |
| SNR | 60.5 dB |
| SFDR | 78 dB |
| Aperture Jitter | 95 fs RMS |
| Full Power Input Bandwidth | 1.2 GHz |
| Tensão de alimentação | 2.5 V (single) |
| Power Dissipation | 585 mW |
| Faixa de tensão de entrada | ±0.5 V or ±1 V (selectable) |
| Output Interface | LVDS / CMOS / Demultiplexed CMOS |
| No Missing Codes | Guaranteed |
| Clock Duty Cycle Stabilizer | Optional |
| Power-Saving Modes | Shutdown and Nap |
| Data Ready Output Clock | Yes |
| Encapsulamento | 64-QFN (9x9 mm) UP |
| Tipo de montagem | Surface Mount |
| Operating Temperature (Commercial) | 0C to +70C |
Configuração de pinos do LTC2241CUP-10
| Pino 1 | GND — Analog ground |
| Pino 2 | AIN+ — Differential analog input positive |
| Pino 3 | AIN- — Differential analog input negative |
| Pino 4 | VCM — Common-mode voltage bypass |
| Pino 5 | SENSE — Input range select (ground=±1V, VREF=±0.5V) |
| Pino 6 | VREF — Internal reference decoupling |
| Pino 7 | VDD — 2.5 V analog supply |
| Pino 8 | OGND — Output driver ground |
| Pino 9 | OVDD — Output driver supply |
| Pino 10 | CLK+ — Differential sample clock positive |
| Pino 11 | CLK- — Differential sample clock negative |
| Pino 12 | DRDY — Data ready output clock |
| Pino 13 | CS — CMOS / LVDS mode select |
| Pino 14 | OF — Output format select |
| Pino 15 | SHUTDN — Shutdown pin (active high) |
| Pino 16 | NAP — Nap power-save mode |
| Pino 17 | DCS — Duty cycle stabilizer enable |
| Pino 18 | D0-D9 — 10-bit LVDS/CMOS data outputs (representative pin) |
| Pino 19 | OGND — Output ground (multiple pins) |
| Pino 20 | OVDD — Output driver supply (multiple pins) |
Aplicações típicas
LTC2241CUP-10 é adequado para 6 aplicaçãos: Cellular Base-Station IF Sampling, Cable Headend QAM Demodulation, Digital Oscilloscope Front End, Medical Ultrasound Beam-Former, Radar / Sonar IF Sampling, Software-Defined Radio (SDR) Platform.
Cellular Base-Station IF Sampling
The LTC2241CUP-10 fits cellular base-station IF digitizers because its 60.5 dB SNR, 78 dB SFDR, and 95 fs RMS aperture jitter enable accurate undersampling of 100-300 MHz intermediate frequencies. A 1.2 GHz full-power bandwidth lets one ADC cover multiple IF bands without an analog mixer chain. Placed between the receiver mixer and the baseband DSP/FPGA, it operates from a single 2.5 V rail at 585 mW, simplifying power-tree design.
Recomendado
Cable Headend QAM Demodulation
The LTC2241CUP-10 is well-suited to QAM demodulators in cable headend equipment where 78 dB SFDR captures densely-packed QAM constellations with low EVM. Selectable ±0.5 V / ±1 V input ranges tune the ADC to the upstream/downstream line-driver output level. LVDS outputs feed a downstream FPGA running DOCSIS channel-bonding logic without requiring a high-pin-count capture ASIC.
Recomendado
Digital Oscilloscope Front End
The LTC2241CUP-10 serves as a per-channel ADC in mid-bandwidth oscilloscope front ends where 210 Msps and 1.2 GHz analog bandwidth exceed the Nyquist need for many general-purpose measurements. A pipelined architecture with no-missing-codes guarantees 10-bit integrity across the full-scale range. The 64-QFN 9x9 mm footprint allows dense multi-channel layouts with adjacent trace isolation.
Recomendado
Medical Ultrasound Beam-Former
In medical ultrasound beam-former channels, the LTC2241CUP-10 provides 210 Msps sampling sufficient for 30-40 MHz harmonic imaging IF frequencies. Ultralow 95 fs RMS jitter preserves low-contrast lesion detectability by minimizing aperture-jitter noise on weak echoes. The shutdown/nap modes enable per-channel power gating between transmit pulses to reduce patient-warming thermal budget.
Recomendado
Radar / Sonar IF Sampling
The LTC2241CUP-10 suits radar and sonar IF sampling where ultralow jitter and high SFDR preserve target-detection dynamic range. 78 dB SFDR ensures spurs from large clutter returns do not mask small Doppler-shifted targets. The 64-QFN exposed pad handles continuous 585 mW dissipation across wide operating-temperature envelopes in ruggedized enclosures.
Recomendado
Software-Defined Radio (SDR) Platform
Software-defined radio platforms benefit from the LTC2241CUP-10's wide input bandwidth and ultralow jitter, enabling direct undersampling of HF-to-L-band RF stages and reducing analog mixing stages. LVDS output pair to FPGA fabrics (Xilinx, Lattice) running GNU Radio or vendor DSP libraries, with the data-ready output clock simplifying capture-FIFO timing closure.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LTC2241CUP-10 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LTC2242CUP-10 | LTC2240IUP-10 | LTC2221CUP |
|---|---|---|---|---|
| Package | 64-QFN (UP, 9x9 mm) | 64-QFN (UP, 9x9 mm) - same | 64-QFN (UP, 9x9 mm) - same | 64-QFN (UP, 9x9 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate | 210 Msps | 250 Msps (+19%) | 105 Msps (-50%) | 65 Msps (-69%) |
| SNR | 60.5 dB | 60.5 dB | 60.5 dB | 61 dB |
| SFDR | 78 dB | 78 dB | 78 dB | 78 dB |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 3.3 V |
| Temperature Grade | Commercial 0C to +70C | Commercial 0C to +70C | Industrial -40C to +85C | Commercial 0C to +70C |
Principais diferenciais
- Wide-bandwidth single-channel pipeline at 210 Msps in 64-QFN (vs LTC2221CUP)
- Pin-compatible with LTC2242-10 family (vs LTC2242CUP-10)
- Industrial temperature drop-in option (vs LTC2240IUP-10)
Notas de projeto
Separate analog and digital ground planes are mandatory for the 64-QFN (UP) footprint; join at a single point under the exposed pad. Route differential clock (CLK+/CLK-) and differential analog inputs (AIN+/AIN-) as 100-ohm differential pairs with length-matched traces within 1 mm. Keep the analog input traces away from the LVDS/CMOS output buses by at least 3 trace widths.
Bypass each VDD pin with a 0.1 uF ceramic plus a 10 uF tantalum placed within 5 mm of the pin. The exposed pad must be soldered to a continuous ground plane with thermal vias (typically 9 vias in a 3x3 array under the 9x9 mm pad) to keep junction temperature within the 0C-70C commercial envelope at 585 mW continuous dissipation.
Drive the CLK+/CLK- differential clock with a low-jitter source (typical 95 fs RMS contribution target). Avoid using an FPGA LVDS output as the clock source unless you measure its jitter with a phase-noise analyzer; even good FPGA LVDS drivers can add 200-500 fs RMS that combines with the ADC aperture jitter to degrade SNR at high input frequencies.
Estimated: at 585 mW dissipation, with theta_JA approximately 30 C/W on a 4-layer JEDEC test PCB, junction temperature rises ~17.5 C above ambient. Continuous operation at +70C ambient places the junction at ~87.5 C, comfortably below the 150 C maximum. Derate the sample rate or duty cycle if a sealed enclosure pushes ambient above 70 C.
Do not leave the SENSE pin floating; tie to GND for ±1 V range or to VREF for ±0.5 V range. Avoid enabling the duty cycle stabilizer when the input clock already has stable 50% duty cycle, as DCS can inject deterministic spurs. Verify the SHUTDN pin returns low during normal operation, as a logic-high residual disables the ADC output.
Informações de conformidade
RoHS compliant per Analog Devices product page. Commercial temperature grade (0C to +70C). Industrial temperature variants (LTC2240IUP-10) available in the same package for -40C to +85C operation.
