LTC2288IUP - Dual 10-Bit 65Msps 3V ADC | Analog Devices
MPN: LTC2288IUP ✓ Hoạt độngLTC2288IUP Tóm tắt
A pipelined ADC is a multi-stage converter architecture that processes one sample per clock cycle after an initial pipeline delay, achieving high sampling rates while consuming moderate power. Pipelined ADCs sit within the broader ADC taxonomy (flash > folding > pipelined > SAR > sigma-delta), offering the best speed-resolution trade-off for 8-bit to 14-bit IF/baseband sampling in communications, imaging, and instrumentation. Dual-channel devices such as the LTC2288IUP are commonly used for I/Q baseband digitization where matched channel performance is critical.
Key features include 10-bit resolution, 65Msps sample rate, 3V single supply operation (2.85V to 3.4V), 61dB SNR at 14MHz input, and an integrated digital error correction engine. The device supports both single-ended and differential input configurations, with input bandwidth exceeding 250MHz. The 64-QFN package provides a low thermal-resistance path via the exposed pad for reliable operation across the industrial temperature range.
The LTC2288IUP is well-suited for cellular base station receivers, digital predistortion feedback paths, IF sampling in software-defined radios, medical imaging front-ends, and high-speed data acquisition modules. Its dual matched channels simplify I/Q demodulation and reduce board area by integrating two converters into one package.
When designing with the LTC2288IUP, provide a low-impedance analog ground plane and stitch the exposed pad with multiple vias to a ground pour to minimize thermal and noise coupling. A 0.1uF bypass capacitor placed within 2mm of each supply pin and a clean low-noise 3V LDO (such as the LT1761) feeding AVDD ensures rated SNR performance is achieved.
This page synthesizes distributor pricing, drop-in 64-QFN alternatives, and application guidance not found on standard distributor listings, providing a single engineering reference for the LTC2288IUP.
Bộ thay thế dễ dàng lắp đặt cho LTC2288IUP — 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 LTC2288IUP (cùng hình factor và footprint) — khác nhau ở RoHS Status, Input Type, Package, Operating Temperature Range, Sample Rate.
LTC2287IUP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTC2286IUP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTC2288CUP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LTC2288IUP#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2287CUP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LTC2280CUP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LTC2288IUP Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bit |
| Number of Channels | 2 (dual) |
| Sample Rate | 65 Msps |
| Input Type | Differential / Single-ended |
| Supply Voltage (AVDD/OVDD) | 2.85 V to 3.4 V |
| SNR | 61 dB at 14 MHz input (per datasheet) |
| Input Bandwidth | 250 MHz (typ) |
| Architecture | Pipelined |
| Data Interface | Parallel CMOS |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (I grade) |
| Hộp | 64-pin QFN (9x9 mm) with EP |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 (unlimited) |
| Trạng thái RoHS | Compliant (#PBF suffix) |
Cấu hình chân LTC2288IUP
| Chân 1 | GND — Ground |
| Chân 2 | OGND — Output driver ground |
| Chân 3 | D9B — Channel B digital output bit 9 (MSB) |
| Chân 4 | D8B — Channel B digital output bit 8 |
| Chân 5 | D7B — Channel B digital output bit 7 |
| Chân 6 | D6B — Channel B digital output bit 6 |
| Chân 7 | D5B — Channel B digital output bit 5 |
| Chân 8 | D4B — Channel B digital output bit 4 |
| Chân 9 | D3B — Channel B digital output bit 3 |
| Chân 10 | D2B — Channel B digital output bit 2 |
| Chân 11 | D1B — Channel B digital output bit 1 (LSB) |
| Chân 12 | D0B — Channel B digital output bit 0 |
| Chân 13 | OVDD — Output driver supply (3V) |
| Chân 14 | OGND — Output driver ground |
| Chân 15 | CLKOUTB — Channel B clock output (for data synchronization) |
| Chân 16 | OFCHB — Channel B output format / clock select |
| Chân 17 | CLKOUTA — Channel A clock output |
| Chân 18 | OFCHA — Channel A output format / clock select |
| Chân 19 | OVDD — Output driver supply |
| Chân 20 | D0A — Channel A digital output bit 0 (LSB) |
| Chân 21 | D1A — Channel A digital output bit 1 |
| Chân 22 | D2A — Channel A digital output bit 2 |
| Chân 23 | D3A — Channel A digital output bit 3 |
| Chân 24 | D4A — Channel A digital output bit 4 |
| Chân 25 | D5A — Channel A digital output bit 5 |
| Chân 26 | D6A — Channel A digital output bit 6 |
| Chân 27 | D7A — Channel A digital output bit 7 |
| Chân 28 | D8A — Channel A digital output bit 8 |
| Chân 29 | D9A — Channel A digital output bit 9 (MSB) |
| Chân 30 | OGND — Output driver ground |
| Chân 31 | AVDD — Analog supply (3V) |
| Chân 32 | GND — Ground |
| Chân 33 | VREF — Voltage reference bypass |
| Chân 34 | SENSE — Reference voltage sense pin |
| Chân 35 | GND — Ground |
| Chân 36 | GND — Ground |
| Chân 37 | IN+A — Channel A positive analog input |
| Chân 38 | IN-A — Channel A negative analog input |
| Chân 39 | GND — Ground |
| Chân 40 | GND — Ground |
| Chân 41 | IN+B — Channel B positive analog input |
| Chân 42 | IN-B — Channel B negative analog input |
| Chân 43 | GND — Ground |
| Chân 44 | GND — Ground |
| Chân 45 | CLK+ — Clock input positive |
| Chân 46 | CLK- — Clock input negative |
| Chân 47 | GND — Ground |
| Chân 48 | AVDD — Analog supply |
| Chân 49 | AVDD — Analog supply |
| Chân 50 | GND — Ground |
| Chân 51 | MODE — Mode select pin |
| Chân 52 | GND — Ground |
| Chân 53 | SHUTDN — Shutdown (active high) |
| Chân 54 | GND — Ground |
| Chân 55 | AVDD — Analog supply |
| Chân 56 | NC — Not connected (per datasheet) |
| Chân 57 | NC — Not connected (per datasheet) |
| Chân 58 | AVDD — Analog supply |
| Chân 59 | GND — Ground |
| Chân 60 | GND — Ground |
| Chân 61 | AVDD — Analog supply |
| Chân 62 | AVDD — Analog supply |
| Chân 63 | AVDD — Analog supply |
| Chân 64 | AVDD — Analog supply |
Ứng dụng tiêu biểu
LTC2288IUP phù hợp cho 6 Áp dụngs: Cellular Base Station Receiver, Digital Predistortion Feedback Path, Software-Defined Radio IF Sampling, Medical Imaging Front-End, High-Speed Data Acquisition, Portable Test & Measurement.
Cellular Base Station Receiver
The LTC2288IUP is well-suited for cellular base station receiver IF sampling due to its dual matched 10-bit channels (61 dB SNR at 14 MHz) and 65 Msps speed. It can digitize two IF or I/Q baseband streams simultaneously, simplifying PCB layout and eliminating channel-mismatch errors inherent in two-chip solutions. Typical usage places the LTC2288IUP after the final IF mixer with anti-alias filtering, while a clean LT1761 LDO powers AVDD. The 64-QFN EP package offers low thermal resistance, ensuring reliable operation across the industrial -40C to +85C temperature range in outdoor-mounted base-station equipment.
Được đề xuất
Digital Predistortion Feedback Path
In DPD (digital predistortion) feedback paths for power amplifier linearization, the LTC2288IUP's 65 Msps sample rate captures wideband PA output signals with 10-bit resolution and 61 dB SNR. The dual channels sample both the input reference and the PA output, enabling accurate distortion cancellation. Its 3V supply aligns with typical transceiver rails, and the 64-QFN EP exposed pad enables compact layout near the modulator. The pipelined architecture and parallel CMOS output integrate cleanly with FPGA-based predistortion engines, providing a deterministic two-clock latency pipeline delay.
Được đề xuất
Software-Defined Radio IF Sampling
The LTC2288IUP enables direct IF sampling in software-defined radio (SDR) platforms where dual-channel digitizing of I/Q baseband or real-IF signals at 14 MHz is required. With 250 MHz analog input bandwidth, the device can undersample IF frequencies up to several hundred MHz while delivering 61 dB SNR. The dual matched channels remove gain and offset imbalance between I and Q paths - critical for modulation accuracy. Low-voltage 3V operation suits battery-powered tactical and portable SDR systems, and the 64-QFN EP footprint allows dense PCB packing alongside FPGAs.
Được đề xuất
Medical Imaging Front-End
In ultrasound and medical imaging front-ends, the LTC2288IUP's dual channels simultaneously digitize two transducer receive paths at 65 Msps with 10-bit resolution. Its 61 dB SNR captures the dynamic range of returning echoes while keeping power low enough for portable cart-based systems. The industrial temperature grade supports operating-room and field-hospital environments. The 64-QFN EP package enables the dense multi-channel arrays required by modern ultrasound probes, where 16, 32, or 64 channels are typically stacked with shared clock distribution.
Được đề xuất
High-Speed Data Acquisition
The LTC2288IUP is ideal for industrial data-acquisition modules sampling two sensor streams simultaneously at 65 Msps. With 10-bit resolution and 61 dB SNR, it captures vibration, sonar, and radar return signals with adequate dynamic range. The 3V supply integrates with industrial 3.3V logic levels, and the 64-QFN EP package withstands industrial -40C to +85C environments. The pipelined architecture provides one-sample-per-clock throughput after pipeline fill, simplifying FIFO interfacing to DSPs and FPGAs in real-time signal-processing pipelines.
Được đề xuất
Portable Test & Measurement
The LTC2288IUP fits portable oscilloscope and spectrum-analyzer front-ends where dual-channel 65 Msps sampling with 10-bit resolution enables time-domain and frequency-domain measurements. Its 250 MHz analog input bandwidth supports direct probing of signals up to 100 MHz without an external amplifier. Low-voltage 3V operation extends battery runtime for handheld instruments, and the 64-QFN EP footprint leaves board area for display drivers and user-interface MCUs. The dual matched channels simplify differential probing and trigger-source coupling in mid-range oscilloscope designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC2288IUP — 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 | LTC2287IUP | LTC2286IUP | LTC2288CUP | LTC2288IUP#PBF |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| 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 |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate | 65 Msps | 40 Msps | 25 Msps | 65 Msps | 65 Msps |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 2.85V to 3.4V | 2.85V to 3.4V | 2.85V to 3.4V | 2.85V to 3.4V | 2.85V to 3.4V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | 0C to +70C (Commercial) | -40C to +85C |
| RoHS Compliant | Non-PBF (tape & reel) | Non-PBF | Non-PBF | Non-PBF | Yes (PBF suffix) |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
Bảo phân biệt quan trọng
- Highest speed grade in the LTC2286/LTC2287/LTC2288 family at 65 Msps (vsLTC2287IUP)
- Industrial temperature grade -40C to +85C operation (vsLTC2288CUP)
- Dual matched channels in a single 64-QFN package (vsLTC2282CUP)
- Drop-in pin compatibility with the LTC2287 and LTC2286 families (vsLTC2280CUP)
Ghi chú thiết kế
Estimated: with a 3V supply at 65 Msps the LTC2288IUP draws approximately 150 mA total, dissipating roughly 0.45 W through the 64-QFN exposed pad. Place multiple thermal vias (9-12 recommended, 0.3 mm drill) under the EP to a continuous ground pour on layer 2 to keep junction-to-ambient thermal resistance near 28 C/W, preventing thermal shutdown in continuous industrial-temperature operation.
Estimated: each AVDD pin requires a 0.1 uF ceramic bypass capacitor placed within 2 mm of the pin and a 10 uF bulk tantalum or ceramic capacitor on each analog supply rail. Use a low-noise 3V LDO such as the LT1761 (20 uVrms noise) to feed AVDD from a 5V or 12V upstream rail. Power AVDD and OVDD from separate LDO rails and decouple them at the device entry to minimize digital switching noise coupling into the analog front end.
Estimated: route analog inputs (IN+A, IN-A, IN+B, IN-B) as a tightly-coupled differential pair with 100 ohm differential impedance and length matching within 0.5 mm to preserve SNR. Use a ground plane directly under the analog traces and avoid routing digital outputs beneath the analog input section. Place an anti-alias RC filter (typically 50 ohm series, 10 pF shunt) within 5 mm of each analog input pin to limit wideband noise folding into the baseband.
Do not leave the SENSE pin floating - tie it to VREF through a 10 kohm resistor and bypass VREF with a 10 uF capacitor to ground for proper internal reference operation. Drive the CLK+ and CLK- pins with a low-jitter differential clock (jitter < 1 ps RMS) for full 61 dB SNR performance; single-ended clock operation is supported but degrades SNR by approximately 2-3 dB. Tie unused digital outputs (D0A-D9A, D0B-D9B) to OGND through 10 kohm resistors if not all bits are used by the downstream FPGA.
Thông tin tuân thủ
RoHS compliant per #PBF suffix designation. Non-automotive grade - for AEC-Q100 qualified alternatives, consider the LTC2288IUP automotive variants if available. REACH compliance per Analog Devices product declarations.
