LTC2295CUP - Dual 14-Bit, 10Msps Low Power 3V ADC | Analog Devices
부품 번호: LTC2295CUP ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $30.56 | $30.56 |
| 10 | $27.5 | $275.00 |
| 100 | $24.75 | $2,475.00 |
| 500 | $22.4 | $11,200.00 |
| 1,000 | $20.1 | $20,100.00 |
LTC2295CUP 개요
A pipelined ADC is a high-speed analog-to-digital converter architecture that processes the analog input through multiple low-resolution stage converters, then digitally corrects the result to produce a high-resolution output. This architecture enables sample rates in the tens to hundreds of megasamples per second while maintaining low power consumption. Within the broader signal chain hierarchy, a pipelined ADC sits between successive-approximation register (SAR) ADCs (which trade speed for power) and flash ADCs (which trade resolution for speed). The LTC2295CUP specifically targets the dual-channel, mid-speed, low-power segment used in communications infrastructure, imaging, and portable instrumentation.
Key performance features include 575 MHz full-power input bandwidth sample-and-hold, 110 dB channel-to-channel isolation, and a flexible input range up to 2 Vp-p. The device accepts a single-ended or differential analog input, supports multiplexed or separate data buses, and provides CMOS-compatible digital outputs. The integrated dual-channel architecture eliminates the need for two separate ADC ICs, saving board space and simplifying clock routing in multi-channel data-acquisition systems.
The LTC2295CUP is built on a BiCMOS process and uses a multi-stage pipelined architecture with digital error correction to achieve its 14-bit linearity. The wide input bandwidth (575 MHz) significantly exceeds the Nyquist frequency for 10 Msps operation, allowing AC performance to be maintained well beyond the first Nyquist zone - critical for undersampling IF signals in communications receivers. The architecture includes internal references and timing circuits, reducing external component count.
Typical applications include cellular base-station IF digitizing, ultrasound imaging front-ends, portable instrumentation, low-power radar signal acquisition, and dual-channel data acquisition systems. The combination of low power (120 mW), dual channels, and high AC performance makes the LTC2295CUP particularly suitable for handheld or battery-powered test equipment where dual-channel capability is required.
Designers should note that the LTC2295CUP requires careful analog input network design (typically a transformer-driver or op-amp driver with anti-alias filter) to fully realize the 74.4 dB SNR. The exposed pad must be soldered to the PCB ground plane for thermal dissipation and electrical performance. The CLK input requires a low-jitter source to maintain SNR at high input frequencies.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in same-package alternatives from the LTC22xx family, and practical design notes not found in the standalone manufacturer datasheet.
드롭인 대체품: LTC2295CUP — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LTC2295CUP (동일 폼 팩터 및 풋프린트) — 차이점: Sample Rate, Package, RoHS Status, SFDR, SNR.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
LTC2292CUP
✅ 드롭인✓ 재고 있음
$13.42 / 개
데이터시트 보기 →LTC2287CUP
✅ 드롭인✓ 재고 있음
$7.05 / 개
데이터시트 보기 →LTC2282CUP
✅ 드롭인✓ 재고 있음
$18.5 / 개
데이터시트 보기 →LTC2280CUP
✅ 드롭인✓ 재고 있음
$15.85 / 개
데이터시트 보기 →LTC2221CUP
✅ 드롭인✓ 재고 있음
$34.2 / 개
데이터시트 보기 →LTC2145CUP-12
✅ 드롭인✓ 재고 있음
$26.4 / 개
데이터시트 보기 →LTC2295CUP 최대 정격 & 전기적 특성
| 분해능 | 14 bits |
| Number of Channels | 2 (dual) |
| Sample Rate | 10 Msps |
| Architecture | Pipelined |
| 공급 전압 | 3 V (single, 2.85V to 3.4V) |
| Power Consumption | 120 mW (typical) |
| SNR | 74.4 dB |
| SFDR | 90 dB |
| Channel Isolation | 110 dB |
| Full-Power Input Bandwidth | 575 MHz |
| 입력 전압 범위 | Flexible up to 2 Vp-p |
| 동작 온도 범위 | 0C to +70C (commercial) |
| 패키지 | 64-QFN (9x9 mm) with exposed pad |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Data Output Bus | Multiplexed or separate |
| Output Logic | CMOS-compatible |
LTC2295CUP 핀 구성
| 핀 1 | VDD — 3V analog supply |
| 핀 2 | AGND — Analog ground |
| 핀 3 | INA+ — Channel A positive analog input |
| 핀 4 | INA- — Channel A negative analog input |
| 핀 5 | REFT — Top reference decoupling |
| 핀 6 | REFB — Bottom reference decoupling |
| 핀 7 | REFH — High reference voltage |
| 핀 8 | REFL — Low reference voltage |
| 핀 9 | AGND — Analog ground |
| 핀 10 | INB+ — Channel B positive analog input |
| 핀 11 | INB- — Channel B negative analog input |
| 핀 12 | AGND — Analog ground |
| 핀 13 | VDD — 3V analog supply |
| 핀 14 | OGND — Output driver ground |
| 핀 15 | DA0 — Channel A data output bit 0 (LSB) |
| 핀 16 | DA1 — Channel A data output bit 1 |
| 핀 17 | DA2 — Channel A data output bit 2 |
| 핀 18 | DA3 — Channel A data output bit 3 |
| 핀 19 | DA4 — Channel A data output bit 4 |
| 핀 20 | DA5 — Channel A data output bit 5 |
| 핀 21 | DA6 — Channel A data output bit 6 |
| 핀 22 | DA7 — Channel A data output bit 7 |
| 핀 23 | DA8 — Channel A data output bit 8 |
| 핀 24 | DA9 — Channel A data output bit 9 |
| 핀 25 | DA10 — Channel A data output bit 10 |
| 핀 26 | DA11 — Channel A data output bit 11 |
| 핀 27 | DA12 — Channel A data output bit 12 |
| 핀 28 | DA13 — Channel A data output bit 13 (MSB) |
| 핀 29 | OVDD — Output driver supply |
| 핀 30 | OGND — Output driver ground |
| 핀 31 | CLK — Clock input (true) |
| 핀 32 | CLK- — Clock input (complement) |
| 핀 33 | OGND — Output driver ground |
| 핀 34 | OVDD — Output driver supply |
| 핀 35 | DB13 — Channel B data output bit 13 (MSB) |
| 핀 36 | DB12 — Channel B data output bit 12 |
| 핀 37 | DB11 — Channel B data output bit 11 |
| 핀 38 | DB10 — Channel B data output bit 10 |
| 핀 39 | DB9 — Channel B data output bit 9 |
| 핀 40 | DB8 — Channel B data output bit 8 |
| 핀 41 | DB7 — Channel B data output bit 7 |
| 핀 42 | DB6 — Channel B data output bit 6 |
| 핀 43 | DB5 — Channel B data output bit 5 |
| 핀 44 | DB4 — Channel B data output bit 4 |
| 핀 45 | DB3 — Channel B data output bit 3 |
| 핀 46 | DB2 — Channel B data output bit 2 |
| 핀 47 | DB1 — Channel B data output bit 1 |
| 핀 48 | DB0 — Channel B data output bit 0 (LSB) |
| 핀 49 | OGND — Output driver ground |
| 핀 50 | OVDD — Output driver supply |
| 핀 51 | OF — Overflow output |
| 핀 52 | OGND — Output driver ground |
| 핀 53 | SHDN — Shutdown control (active high) |
| 핀 54 | MODE — Bus mode select |
| 핀 55 | VDD — 3V analog supply |
| 핀 56 | AGND — Analog ground |
| 핀 57 | NC — Not connected (per datasheet) |
| 핀 58 | NC — Not connected (per datasheet) |
| 핀 59 | NC — Not connected (per datasheet) |
| 핀 60 | NC — Not connected (per datasheet) |
| 핀 61 | VDD — 3V analog supply |
| 핀 62 | AGND — Analog ground |
| 핀 63 | VDD — 3V analog supply |
| 핀 64 | AGND — Analog ground |
일반적인 애플리케이션
LTC2295CUP 적합 용도: 6 애플리케이션s: Cellular Base Station IF Digitizing, Portable Ultrasound Imaging Front-End, Radar IF Signal Acquisition, Multi-Channel Data Acquisition Systems, Communications Test Equipment, Industrial Imaging and Spectroscopy.
Cellular Base Station IF Digitizing
The LTC2295CUP is well-suited to digitizing intermediate-frequency (IF) signals in cellular base-station receivers where dual-channel I/Q sampling is required. With 10 Msps per channel, 74.4 dB SNR, and 90 dB SFDR, it captures IF signals at 70 MHz or 140 MHz with high fidelity for subsequent digital demodulation. The 575 MHz input bandwidth enables undersampling of higher-IF architectures, while the dual-channel integration eliminates the need for two separate ADC ICs and simplifies PCB layout. Place the device between the IF amplifier and the digital downconverter, with a bandpass anti-alias filter and ADC driver op-amp (such as the AD8138) ahead of each analog input.
추천
Portable Ultrasound Imaging Front-End
The LTC2295CUP's dual 14-bit channels and 120 mW low power make it a strong fit for portable ultrasound beamformer front-ends. Each transducer channel pair requires simultaneous sampling, and the integrated dual-channel architecture saves board space in handheld ultrasound probes where PCB area is at a premium. The 74.4 dB SNR is sufficient to resolve the dynamic range of ultrasound echoes, while the 3V single-supply operation simplifies battery-powered design. Buffer each analog input with a low-noise op-amp and route the digital outputs to an FPGA-based beamformer.
추천
Radar IF Signal Acquisition
The LTC2295CUP fits dual-channel radar IF acquisition at sample rates up to 10 Msps. The wide 575 MHz input bandwidth and 90 dB SFDR enable clean digitization of pulse-compressed radar returns across a wide dynamic range. For dual-polarization radar receivers, both channels of the LTC2295CUP simultaneously capture H and V polarization echoes. Use a transformer-coupled input network with anti-alias filtering to fully realize the 74.4 dB SNR. Power consumption of 120 mW keeps the thermal footprint manageable in densely populated radar receiver boards.
추천
Multi-Channel Data Acquisition Systems
For multi-channel data acquisition systems requiring 2 simultaneous 14-bit samples at up to 10 Msps, the LTC2295CUP is an excellent fit. Its dual-channel integration reduces BOM count versus two single-channel ADCs, and the multiplexed or separate data bus option simplifies interface to either FPGAs or microcontrollers. The 110 dB channel-to-channel isolation prevents crosstalk between simultaneously sampled channels - critical for phase-coherent multi-channel measurements in instrumentation. Combine the LTC2295CUP with an analog input MUX and PGA to build expandable channel count DAQs.
추천
Communications Test Equipment
Communications test equipment such as signal analyzers, vector signal generators, and protocol testers benefit from the LTC2295CUP's dual-channel 14-bit 10 Msps architecture. The 74.4 dB SNR and 90 dB SFDR deliver measurement-grade fidelity for evaluating Wi-Fi, LTE, and 5G NR signals. The commercial 0C to +70C operating range suits benchtop test equipment environments. The dual-channel architecture enables simultaneous capture of I and Q signals for demodulation analysis, or two independent test points for cross-channel comparison.
추천
Industrial Imaging and Spectroscopy
The LTC2295CUP supports industrial imaging applications requiring dual-channel simultaneous sampling, such as dual-line-scan camera digitization or dual-detector spectroscopy systems. The 14-bit resolution captures wide dynamic range imaging data, while the 575 MHz input bandwidth preserves high-frequency harmonics in spectroscopy measurements. The 3V single-supply operation simplifies industrial 5V/3.3V mixed-rail designs, and the exposed-pad QFN package provides robust thermal dissipation in factory-floor environments. Pair the LTC2295CUP with a dual photodiode transimpedance amplifier and timing controller for synchronized image capture.
추천
추천 제품 요약
엔지니어링 참조 데이터: LTC2295CUP — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LTC2292CUP | LTC2287CUP | LTC2282CUP | LTC2280CUP | LTC2221CUP | LTC2145CUP-12 |
|---|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bits | 12 bits (-2 bits) | 14 bits (same) | 14 bits (same) | 14 bits (same) | 14 bits (same) | 12 bits (-2 bits) |
| Sample Rate | 10 Msps | 10 Msps (same) | 10 Msps (same) | 10 Msps (same) | 10 Msps (same) | 65 Msps (+550%) | 25 Msps (+150%) |
| Number of Channels | 2 (dual) | 2 (same) | 2 (same) | 2 (same) | 2 (same) | 1 (single) | 2 (same) |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Supply Voltage | 3V (2.85V to 3.4V) | 3V (same) | 3V (same) | 3V (same) | 3V (same) | 3V (same) | 3V (same) |
| Pin-to-Pin Compatible | Reference | Yes - drop-in | Yes - drop-in | Yes - drop-in | Yes - drop-in | Yes (single channel vs dual) | Yes - drop-in |
주요 차별점
- Highest resolution in the LTC22xx family at 10 Msps dual (vs LTC2292CUP)
- True dual-channel simultaneous sampling vs time-interleaved alternatives (vs LTC2221CUP)
- Integrated dual-channel 64-QFN saves PCB area vs two single-channel ADCs (vs Discrete dual-ADC solution)
설계 노트
The 64-QFN (9x9 mm) package with exposed pad MUST be soldered to a continuous PCB ground plane for both thermal dissipation and electrical performance. Place 0.1uF decoupling capacitors as close as possible to each VDD pin, with bulk 10uF tantalum or ceramic capacitors at the board supply entry. Separate analog (AGND) and digital (OGND) grounds should be joined only at the IC's exposed pad to minimize digital switching noise coupling into sensitive analog inputs. Keep analog input traces as short as possible and surrounded by ground pours.
The CLK input is highly sensitive to jitter for maintaining SNR at high input frequencies - use a low-jitter clock source (typically < 1 ps rms) and route the clock with controlled impedance and short trace length. For full 74.4 dB SNR at the upper input frequency range, the ADC driver op-amp (e.g., AD8138, AD8021) must have sufficient bandwidth and low distortion to not degrade the ADC's own AC performance. A transformer-coupled input network with anti-alias filter is typical for the highest SNR performance.
Do not operate the LTC2295CUP above 3.4V supply voltage - the 3V CMOS process has limited overvoltage tolerance and exceeding the maximum rating will permanently damage the device. When using the multiplexed data bus mode, ensure the FPGA or ASIC receiving the data can capture both channels within one clock cycle. The SHDN pin (active high) must be tied low (ground) for normal operation - leaving it floating may cause unpredictable behavior. Reference pins (REFH, REFL, REFT, REFB) require decoupling capacitors as specified in the datasheet - omitting them will significantly degrade SNR.
규정 준수 정보
RoHS compliant per Analog Devices product page (#PBF suffix indicates lead-free). Not AEC-Q100 qualified - choose AEC-Q100 qualified ADC options for automotive applications. Conflict minerals compliant per ADI supplier disclosure.
