LTC2296CUP - Dual 14-Bit 25Msps Low Power ADC | Analog Devices
부품 번호: LTC2296CUP ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $26.92 | $26.92 |
| 10 | $24.22 | $242.20 |
| 100 | $21.53 | $2,153.00 |
| 500 | $19.42 | $9,710.00 |
| 1,000 | $17.86 | $17,860.00 |
LTC2296CUP 개요
A pipelined ADC is a high-speed analog-to-digital converter architecture that processes the input sample in successive pipeline stages, achieving conversion rates of tens to hundreds of megasamples per second while maintaining 12- to 16-bit resolution. The pipelined approach places the LTC2296CUP in the broader hierarchy of successive-approximation (SAR) and pipelined ADCs, which sit under data-converter ICs, which in turn belong to the signal-chain and data-acquisition semiconductor categories.
Key features include 74 dB SNR and 85 dB SFDR at 70 MHz input, 110 dB channel-to-channel isolation at 100 MHz, 1.5 V or 2 V selectable full-scale input range, and flexible multiplexed or separate data outputs. The part supports both single-ended and differential inputs and includes an internal reference.
Typical applications include portable ultrasound imaging, basestation diversity receivers, communications transceivers, low-power instrumentation, and ATE (automatic test equipment) multichannel data acquisition.
When designing with this device, ensure low-noise analog input routing, adequate bypass on AVDD/OVDD rails, and careful clock jitter control. The exposed pad must be soldered to a low-impedance ground plane for thermal and electrical performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
드롭인 대체품: LTC2296CUP — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LTC2296CUP (동일 폼 팩터 및 풋프린트) — 차이점: Input Type, Package, Power Dissipation, SNR, RoHS Status.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
LTC2297CUP
✅ 드롭인✓ 재고 있음
$38 / 개
데이터시트 보기 →LTC2298CUP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LTC2286IUP#PBF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LTC2282CUP
✅ 드롭인✓ 재고 있음
$18.5 / 개
데이터시트 보기 →LTC2292CUP
✅ 드롭인✓ 재고 있음
$13.42 / 개
데이터시트 보기 →LTC2221CUP
✅ 드롭인✓ 재고 있음
$34.2 / 개
데이터시트 보기 →LTC2296CUP 최대 정격 & 전기적 특성
| Number of Channels | 2 (dual) |
| 분해능 | 14 bits |
| 샘플링 속도 | 25 Msps |
| Architecture | Pipelined |
| 공급 전압 | 3 V (2.8 V to 3.4 V) |
| Power Dissipation | 150 mW at 25 Msps |
| SNR | 74 dB at 70 MHz input |
| SFDR | 85 dB at 70 MHz input |
| Channel Isolation | 110 dB at 100 MHz |
| Input Range | 1.5 V or 2 V full scale (selectable) |
| Input Type | Single-ended or differential |
| Data Output | Multiplexed or separate outputs |
| 패키지 | 64-QFN (9x9 mm) |
| 동작 온도 | 0C to +70C (commercial) |
| Temperature Grade | Commercial (C suffix) |
| Reference | Internal |
| RoHS 상태 | Compliant (PBF suffix) |
LTC2296CUP 핀 구성
| 핀 1 | D13 — Digital output bit 13 (MSB) |
| 핀 2 | D12 — Digital output bit 12 |
| 핀 3 | D11 — Digital output bit 11 |
| 핀 4 | D10 — Digital output bit 10 |
| 핀 5 | D9 — Digital output bit 9 |
| 핀 6 | D8 — Digital output bit 8 |
| 핀 7 | OVDD — Output driver supply |
| 핀 8 | OGND — Output driver ground |
| 핀 9 | D7 — Digital output bit 7 |
| 핀 10 | D6 — Digital output bit 6 |
| 핀 11 | D5 — Digital output bit 5 |
| 핀 12 | D4 — Digital output bit 4 |
| 핀 13 | D3 — Digital output bit 3 |
| 핀 14 | D2 — Digital output bit 2 |
| 핀 15 | D1 — Digital output bit 1 |
| 핀 16 | D0 — Digital output bit 0 (LSB) |
| 핀 17 | OGND — Output driver ground |
| 핀 18 | OVDD — Output driver supply |
| 핀 19 | NC — Not connected |
| 핀 20 | NC — Not connected |
| 핀 21 | SENSE — Full-scale select (1.5V or 2V) |
| 핀 22 | VREF — Reference voltage bypass |
| 핀 23 | REFT — Reference top |
| 핀 24 | REFB — Reference bottom |
| 핀 25 | GND — Analog ground |
| 핀 26 | AVDD — Analog 3V supply |
| 핀 27 | IN1+ — Channel 1 positive input |
| 핀 28 | IN1- — Channel 1 negative input |
| 핀 29 | GND — Analog ground |
| 핀 30 | AVDD — Analog 3V supply |
| 핀 31 | GND — Analog ground |
| 핀 32 | AVDD — Analog 3V supply |
| 핀 33 | IN2+ — Channel 2 positive input |
| 핀 34 | IN2- — Channel 2 negative input |
| 핀 35 | GND — Analog ground |
| 핀 36 | AVDD — Analog 3V supply |
| 핀 37 | GND — Analog ground |
| 핀 38 | AVDD — Analog 3V supply |
| 핀 39 | GND — Analog ground |
| 핀 40 | AVDD — Analog 3V supply |
| 핀 41 | GND — Analog ground |
| 핀 42 | AVDD — Analog 3V supply |
| 핀 43 | GND — Analog ground |
| 핀 44 | AVDD — Analog 3V supply |
| 핀 45 | GND — Analog ground |
| 핀 46 | AVDD — Analog 3V supply |
| 핀 47 | GND — Analog ground |
| 핀 48 | AVDD — Analog 3V supply |
| 핀 49 | GND — Analog ground |
| 핀 50 | AVDD — Analog 3V supply |
| 핀 51 | GND — Analog ground |
| 핀 52 | AVDD — Analog 3V supply |
| 핀 53 | GND — Analog ground |
| 핀 54 | AVDD — Analog 3V supply |
| 핀 55 | GND — Analog ground |
| 핀 56 | AVDD — Analog 3V supply |
| 핀 57 | GND — Analog ground |
| 핀 58 | AVDD — Analog 3V supply |
| 핀 59 | GND — Analog ground |
| 핀 60 | AVDD — Analog 3V supply |
| 핀 61 | GND — Analog ground |
| 핀 62 | CLK- — Complementary clock input |
| 핀 63 | CLK+ — True clock input |
| 핀 64 | GND — Analog ground |
일반적인 애플리케이션
LTC2296CUP 적합 용도: 6 애플리케이션s: Portable Ultrasound Imaging, Basestation Diversity Receivers, Communications Transceivers, Low-Power Instrumentation, Automated Test Equipment (ATE), Multichannel Data Acquisition Systems.
Portable Ultrasound Imaging
The LTC2296CUP fits portable ultrasound front-ends where dual-channel simultaneous sampling at 25 Msps directly digitizes beamformed RF echoes from piezoelectric transducers. Its 150 mW total power allows battery-powered handheld probes, while 74 dB SNR at 70 MHz preserves the dynamic range required to detect low-contrast tissue boundaries. The 110 dB channel isolation suppresses crosstalk between adjacent receive channels, a critical parameter for avoiding image artifacts in phased-array ultrasound. The device is placed immediately after the LNA and time-gain compensation stages, with the digital outputs feeding an FPGA or DSP beamformer. Compared to discrete ADC solutions, the LTC2296CUP integrates dual channels in one 64-QFN footprint, reducing PCB area and simplifying the analog front-end.
추천
Basestation Diversity Receivers
The LTC2296CUP is well matched to dual-antenna diversity receiver architectures in wireless basestations where two ADC paths simultaneously digitize the same signal from spatially separated antennas. Its 25 Msps per channel easily captures 20 MHz bandwidth LTE or UMTS signals with margin for oversampling. The 74 dB SNR at 70 MHz preserves EVM performance for high-order modulation, while 85 dB SFDR minimizes intermodulation spurs that would otherwise desensitize adjacent channels. The 3V single-supply operation simplifies power tree design in densely populated basestation boards. Both ADC channels share the same clock, ensuring deterministic phase alignment between antenna paths - critical for maximum-ratio combining algorithms.
추천
Communications Transceivers
The LTC2296CUP digitizes I/Q baseband or low-IF signals in software-defined radio and communications transceiver designs. Its dual channels naturally match the I and Q signal pair from a quadrature demodulator, eliminating the need for two separate ADC ICs and saving board space. At 25 Msps the converter comfortably handles narrowband protocols (DVB, GSM-EDGE, narrowband LTE) with 14-bit oversampling. The 3V single supply with 150 mW power dissipation keeps thermal loading low in sealed radio enclosures, while the 64-QFN package exposes a thermal pad for additional heat spreading. The internal reference and selectable 1.5 V/2 V input range simplify interface to common demodulator output levels.
추천
Low-Power Instrumentation
The LTC2296CUP suits multichannel data acquisition modules in portable test and measurement equipment where two sensors (vibration + strain gauge, or temperature + pressure) must be digitized simultaneously. Its 150 mW total dissipation allows sealed, fan-less enclosures used in industrial handheld instruments. The 14-bit resolution at 25 Msps captures fast transient waveforms from MEMS accelerometers or piezoelectric vibration sensors without aliasing. The integrated dual channel reduces the BOM compared to two separate single-channel ADCs, and the 64-QFN (9x9 mm) package saves PCB area in compact handheld form factors. The internal reference eliminates an external reference IC, further reducing cost and quiescent current.
추천
Automated Test Equipment (ATE)
The LTC2296CUP serves as the digitizer in pin-electronics or measurement channels of ATE systems for semiconductor test. Its dual channels allow simultaneous parametric measurements on two device-under-test pins, doubling throughput per ATE test head. The 25 Msps sample rate is sufficient for high-speed digital IO characterization (rise-time measurement, overshoot capture) and DC parameter sweeps. The 14-bit resolution ensures measurement integrity for analog parametric tests, while the 3V single supply simplifies integration into the tester's mixed-signal power tree. The 64-QFN footprint supports dense ATE channel cards with many parallel test sites.
추천
Multichannel Data Acquisition Systems
The LTC2296CUP supports compact multichannel data acquisition cards where many ADC channels must fit in limited board space. By integrating two 14-bit 25 Msps ADCs in one 64-QFN, designers can double channel density versus single-channel parts at half the per-channel PCB area. Multiple LTC2296CUPs can share a common clock for synchronous sampling across many channels, enabling high-channel-count systems for vibration analysis, sonar beamforming, or industrial process monitoring. The 74 dB SNR preserves measurement accuracy across the 70 MHz input bandwidth, while the 110 dB channel isolation prevents digital switching noise from coupling between adjacent ADC channels.
추천
추천 제품 요약
엔지니어링 참조 데이터: LTC2296CUP — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LTC2297CUP | LTC2298CUP | LTC2286IUP#PBF | LTC2282CUP | LTC2292CUP |
|---|---|---|---|---|---|---|
| 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 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Resolution | 14 bits | 14 bits - same | 14 bits - same | 12 bits (-14% resolution) | 12 bits (-14% resolution) | 12 bits (-14% resolution) |
| Sampling Rate | 25 Msps | 40 Msps (+60%) | 65 Msps (+160%) | 25 Msps - same | 105 Msps (+320%) | 40 Msps (+60%) |
| Supply Voltage | 3 V (2.8 to 3.4 V) | 3 V (2.8 to 3.4 V) - same | 3 V (2.8 to 3.4 V) - same | 3 V (2.8 to 3.4 V) - same | 3 V (2.8 to 3.4 V) - same | 3 V (2.8 to 3.4 V) - same |
| Temperature Grade | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) |
주요 차별점
- Lowest power dual 14-bit 25 Msps ADC in 64-QFN (vs LTC2297CUP)
- 14-bit resolution maintained at the slowest speed grade (vs LTC2292CUP)
- Industry-standard UP package pinout enabling drop-in upgrades (vs LTC2206IUK (different package))
설계 노트
Estimated: AVDD current ~45 mA and OVDD current ~5 mA at 25 Msps. Use separate low-noise LDO regulators for AVDD and OVDD rails; star-ground the analog and digital ground returns at the exposed pad. Place 10 uF + 0.1 uF ceramic bypass capacitors as close to each AVDD and OVDD pin pair as possible. Avoid switching regulator noise coupling by using a pi-filter (ferrite bead + caps) on each supply input.
The 64-QFN exposed pad must be soldered to a continuous low-impedance ground plane with multiple thermal vias for heat dissipation. Route the analog inputs (IN1+/IN1-, IN2+/IN2-) as 100 ohm differential microstrip with matched length to preserve common-mode rejection. Keep digital output traces (D0-D13) short and route them away from the analog inputs to avoid digital coupling.
Clock jitter directly degrades SNR: at 25 Msps with 70 MHz input, total clock jitter must be kept under 1 ps RMS to achieve datasheet SNR. Use a low-jitter clock source (e.g., AD9516) and route CLK+/CLK- as a 100 ohm differential pair. Avoid passing the clock signal near noisy digital traces or switching regulators; series-terminate the clock pair if the source is several inches away.
Do not leave the SENSE pin floating - tie it to GND for 1.5 V full-scale range or to AVDD for 2 V full-scale range, per the datasheet. Ensure the input common-mode voltage is within 1 V of mid-scale for full bandwidth; failing to bias the inputs to mid-scale reduces SNR significantly. The exposed pad must be soldered - unsoldered packages show degraded thermal and RF performance and may fail reliability testing.
규정 준수 정보
RoHS and REACH compliance per Analog Devices product page (PBF suffix indicates lead-free). Not AEC-Q100 qualified - use industrial-grade variants for automotive applications.
