LTC2230CUP - 10-Bit 170Msps ADC | Analog Devices | QFN-64
MPN: LTC2230CUP ✓ Hoạt độngLTC2230CUP Tóm tắt
What is a pipelined ADC? A pipelined analog-to-digital converter is a high-speed Nyquist ADC architecture that processes a continuous stream of samples through cascaded low-resolution stage flash converters, each stage resolving a portion of the bits before passing the residue to the next stage. Pipelined ADCs sit within the broader taxonomy of data converters (ADC -> Nyquist ADC -> pipelined ADC -> mixed-signal IC -> semiconductor) and are the dominant architecture for high-sample-rate applications in the 10 Msps to several hundred Msps range where successive-approximation (SAR) ADCs run out of speed. The LTC2230 family represents a mainstream 10-bit pipelined design optimized for IF undersampling, imaging, and instrumentation.
Key features include 170 Msps sample rate, 10-bit resolution, ±1 LSB INL (typical), 60 dB SNR at Nyquist with 5MHz input, and a single 3V supply operation (2.7V to 3.4V). Power dissipation is approximately 380 mW at full sample rate. The differential input range supports a 1V P-P full-scale swing using the internal 2.5V reference, or can be driven with external reference for gain fine-tuning. The UP package has an exposed thermal pad that must be soldered to the PCB ground plane for thermal dissipation and electrical performance.
Design-in considerations include the requirement for low-jitter clock input (less than 0.5 ps RMS for full ENOB), differential input drive via transformer or op-amp driver, and proper decoupling of the analog and digital supplies (they share the same 3V rail but require separate bypass networks). For comparison, the LTC2240 family extends the same architecture to 12-bit resolution, and the LTC2220 family drops to 105 Msps in the same QFN-64 (UP) footprint.
Bộ thay thế dễ dàng lắp đặt cho LTC2230CUP — 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 LTC2230CUP (cùng hình factor và footprint) — khác nhau ở Package, Resolution, Operating Temperature Range, SNR, Supply Voltage.
LTC2220CUP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2221CUP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2155CUP-12
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2156IUP-14
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2230CUP Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bits |
| Sample Rate (max) | 170 Msps |
| Number of Inputs | 1 |
| Architecture | Pipelined |
| Điện áp cung cấp | 2.7 V to 3.4 V (single 3V supply) |
| Power Dissipation (typ @ 170 Msps) | 380 mW |
| Input Type | Differential |
| Full-Scale Input Range | 1 V P-P (with internal 2.5V reference) |
| Reference | Internal 2.5V or external |
| Output Format | CMOS parallel |
| Output Channels | 1 |
| Integral Nonlinearity (INL) | ±1 LSB (typ) |
| Signal-to-Noise Ratio (SNR) at Nyquist | 60 dB (typ, 5 MHz input) |
| Khoảng nhiệt độ hoạt động | 0C to +70C (C grade) |
| Hộp | 64-QFN (UP, 9x9 mm) |
| Kiểu lắp đặt | Surface Mount |
| Lead-Free / RoHS | Lead-free (PBF suffix); RoHS compliant |
Cấu hình chân LTC2230CUP
| Chân 1 | GND — Ground |
| Chân 2 | AIN+ — Differential analog input positive |
| Chân 3 | AIN- — Differential analog input negative |
| Chân 4 | GND — Ground |
| Chân 5 | VREF — Reference voltage bypass |
| Chân 6 | REFT — Reference top |
| Chân 7 | REFB — Reference bottom |
| Chân 8 | GND — Ground |
| Chân 9 | VDD — Analog 3V supply |
| Chân 10 | GND — Ground |
| Chân 11 | VDD — Analog 3V supply |
| Chân 12 | GND — Ground |
| Chân 13 | CLK — Sample clock input |
| Chân 14 | CLK- — Complementary sample clock (some pin variants) |
| Chân 15 | GND — Ground |
| Chân 16 | OE — Output enable |
| Chân 17 | OF — Output format / clock out |
| Chân 18 | D0 — Data output bit 0 (LSB) |
| Chân 19 | D1 — Data output bit 1 |
| Chân 20 | D2 — Data output bit 2 |
| Chân 21 | D3 — Data output bit 3 |
| Chân 22 | D4 — Data output bit 4 |
| Chân 23 | D5 — Data output bit 5 |
| Chân 24 | D6 — Data output bit 6 |
| Chân 25 | D7 — Data output bit 7 |
| Chân 26 | D8 — Data output bit 8 |
| Chân 27 | D9 — Data output bit 9 (MSB) |
| Chân 28 | OVDD — Output driver 3V supply |
| Chân 29 | GND — Ground |
| Chân 30 | OVDD — Output driver 3V supply |
| Chân 31 | OGND — Output driver ground |
| Chân 32 | NC — No connect |
| Chân 33 | NC — No connect |
| Chân 34 | NC — No connect |
| Chân 35 | NC — No connect |
| Chân 36 | NC — No connect |
| Chân 37 | OGND — Output driver ground |
| Chân 38 | OVDD — Output driver 3V supply |
| Chân 39 | GND — Ground |
| Chân 40 | OVDD — Output driver 3V supply |
| Chân 41 | OVDD — Output driver 3V supply |
| Chân 42 | OGND — Output driver ground |
| Chân 43 | NC — No connect |
| Chân 44 | NC — No connect |
| Chân 45 | NC — No connect |
| Chân 46 | NC — No connect |
| Chân 47 | NC — No connect |
| Chân 48 | GND — Ground |
| Chân 49 | SENSE — Reference mode select |
| Chân 50 | VDD — Analog 3V supply |
| Chân 51 | GND — Ground |
| Chân 52 | VDD — Analog 3V supply |
| Chân 53 | GND — Ground |
| Chân 54 | GND — Ground |
| Chân 55 | MUXOUT — Internal reference output |
| Chân 56 | REFIN — External reference input |
| Chân 57 | GND — Ground |
| Chân 58 | GND — Ground |
| Chân 59 | VDD — Analog 3V supply |
| Chân 60 | GND — Ground |
| Chân 61 | GND — Ground |
| Chân 62 | GND — Ground |
| Chân 63 | GND — Ground |
| Chân 64 | GND — Ground |
Ứng dụng tiêu biểu
LTC2230CUP phù hợp cho 6 Áp dụngs: Digital Oscilloscope and Waveform Digitizer, IF Sampling and Software Defined Radio, Medical Imaging Front-End, Industrial Non-Destructive Testing, Radar and Lidar Signal Processing, Communications Test Equipment.
Digital Oscilloscope and Waveform Digitizer
The LTC2230CUP's 10-bit resolution at 170 Msps makes it suitable for single-shot and repetitive waveform capture in mid-bandwidth oscilloscopes and benchtop digitizers. The pipelined architecture provides consistent latency and a single 3V supply, simplifying the analog front-end design. To reach its 60 dB Nyquist SNR, designers must meet the 0.5 ps RMS clock jitter envelope - a low-jitter TCXO or clock synthesizer should be placed close to the encoder clock pin. Differential drive via a transformer or the LTC6400 ADC driver preserves even-order harmonics and 2nd-order intermodulation performance.
Được đề xuất
IF Sampling and Software Defined Radio
Software-defined radios and IF-sampling receivers benefit from the LTC2230CUP's wide analog input bandwidth and 170 Msps sample rate, which enable direct undersampling of intermediate-frequency signals in the 50 to 200 MHz range. Combined with a DDC FPGA downstream, the 10-bit data stream produces sufficient dynamic range for demodulation of QAM, QPSK, and OFDM waveforms in cellular and military receivers. Compared with 12/14-bit ADCs, the 10-bit format trades dynamic range for substantially lower cost - this is acceptable when post-processing gain or noise averaging can be applied.
Được đề xuất
Medical Imaging Front-End
Ultrasound and other medical imaging systems use the LTC2230CUP for digitizing signals from beamformer preamplifiers at sample rates up to 170 Msps. The 60 dB SNR is adequate for tissue harmonic imaging and Doppler processing, while the differential inputs reject common-mode noise generated by the high-voltage transmit pulser. The 64-QFN (UP) 9x9 mm footprint is small enough to fit multi-channel boards in cart-based ultrasound systems, and the exposed pad simplifies thermal management when 4 to 8 channels are stacked in parallel.
Được đề xuất
Industrial Non-Destructive Testing
Phased-array ultrasonic flaw detectors and eddy-current NDT instruments use the LTC2230CUP for digitizing amplified transducer signals at up to 170 Msps. The pipelined latency is well-defined and constant, which simplifies time-of-flight calculations in TOFD (time-of-flight diffraction) inspection. Industrial 0 to 70C temperature grade suits factory-floor enclosures, and the 3V single-supply operation lets designers share rails with downstream FPGAs. Anti-alias filtering at 80 MHz is required to prevent out-of-band alias energy from folding into the capture band.
Được đề xuất
Radar and Lidar Signal Processing
Short-range automotive radar, lidar digitizers, and surveillance receivers can use the LTC2230CUP to capture IF outputs of mixer stages. Sample rate of 170 Msps matches IF bandwidths of 80 MHz, while the 10-bit dynamic range provides enough resolution for envelope detection and matched filtering. The CMOS output bus interfaces cleanly with mid-range FPGAs (Cyclone, Spartan-7) without level translation, eliminating extra components on the digital side of the design.
Được đề xuất
Communications Test Equipment
Vector signal analyzers, spectrum analyzers, and arbitrary waveform generator digitizer sections incorporate the LTC2230CUP when 10-bit resolution suffices for IQ demodulation. The differential input structure pairs well with direct-conversion receivers for cable modem termination test, while the internal 2.5V reference simplifies calibration. The compact 64-QFN (UP) 9x9 mm footprint allows multi-channel digitizer cards in PXI and LXI instruments where board space is at a premium.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC2230CUP — 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 | LTC2220CUP | LTC2221CUP | LTC2155CUP-12 | LTC2156IUP-14 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 64-QFN (UP, 9x9 mm) | 64-QFN (UP, 9x9 mm) - same | 64-QFN (UP, 9x9 mm) - same | 64-QFN (UP, 9x9 mm) - same | 64-QFN (UP, 9x9 mm) - same |
| Resolution | 10 bits | 10 bits | 10 bits | 12 bits | 14 bits |
| Sample Rate (max) | 170 Msps | 105 Msps | 65 Msps | 170 Msps | 210 Msps |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Supply Voltage | 2.7 V to 3.4 V | 2.7 V to 3.4 V | 2.7 V to 3.4 V | 2.7 V to 3.4 V | 2.7 V to 3.4 V |
| Input Type | Differential | Differential | Differential | Differential | Differential |
| Reference | Internal 2.5V / external | Internal 2.5V / external | Internal 2.5V / external | Internal / external | Internal / external |
Bảo phân biệt quan trọng
- Highest sample rate at 10-bit resolution within the LTC22xx family (vsLTC2220CUP)
- 10-bit format optimizes cost-per-channel (vsLTC2155CUP-12)
- Industrial temperature grade C part for commercial/industrial systems (vsLTC2156IUP-14)
Ghi chú thiết kế
Differential input traces from the transformer or ADC driver to AIN+ and AIN- must be length-matched to within 0.5 mm to preserve 100-ohm differential balance. Route the CLK signal with 50-ohm controlled impedance and keep it isolated from noisy digital output buses on the opposite side of the QFN-64 (UP) exposed pad. The exposed pad must be soldered to the analog ground plane and tied through multiple vias to a low-impedance ground pour for thermal dissipation of the ~380 mW power budget.
Use a 0.1 uF X7R ceramic bypass capacitor at each of the VDD and OVDD pins, placed within 2 mm of the package, plus a single 10 uF bulk tantalum or ceramic capacitor at the PCB supply entry. Separate analog and digital supply islands join at a single ferrite bead or ferrite inductor to break switching noise coupling while sharing the same 3V rail. The SENSE pin selects internal vs external reference and must be tied to VDD or REF_IN through a clean low-impedance path.
When the LTC2230CUP is used at low sample rates, exercise care with the analog input bandwidth - the wide analog bandwidth (700 MHz typ) can let out-of-band noise fold into the Nyquist band, so an anti-alias filter is mandatory. For single-ended drive, never tie AIN- to ground directly; AC-couple AIN- to ground through a 50-ohm resistor to avoid saturating the internal differential clamp. Failing to solder the exposed thermal pad is the single most common layout error and triggers both thermal shutdown and output code-dependent drift.
Thông tin tuân thủ
LTC2230CUP#PBF suffix indicates Pb-free / RoHS-compliant per standard Analog Devices part-number convention. AEC-Q100 not applicable for this commercial/industrial-grade ADC.
