LTC2202CUK - 16-Bit 10Msps ADC, 48-QFN | Analog Devices
MPN: LTC2202CUK ✓ Hoạt độngLTC2202CUK Tóm tắt
What is a pipelined ADC? A pipelined analog-to-digital converter is a high-speed Nyquist ADC architecture that processes the analog input through a series of low-resolution flash stages, each stage producing a digital residue that is digitized by the next stage. Pipelined ADCs offer a strong trade-off between sampling rate (single-digit MHz to several hundred MHz), resolution (8-16 bits), and power consumption, making them the dominant choice for communications infrastructure, instrumentation, and defense signal acquisition. The LTC2202CUK sits in the 16-bit, 10-25Msps segment commonly used in IF digitizers, ultrasound receivers, and spectrum analyzers.
Key features of the LTC2202CUK include 10Msps guaranteed sampling rate, 81.6dB SNR and 100dB SFDR at the Nyquist input, integrated PGA front end for input scaling, LVDS or CMOS-compatible digital outputs, optional dither for improved low-level linearity, and an internal reference. The part operates from a single 3.3V analog supply plus a 3.3V or optional 2.5V digital supply, simplifying system power design. The 48-QFN (7x7) package offers a low thermal-resistance path for the commercial-grade temperature range.
The LTC2202CUK is typically used in cellular base-station digitizers, satellite receivers, medical imaging front-ends, sonar processing, and high-speed instrumentation. Its 380MHz input bandwidth makes it suitable for undersampling IF signals, while the integrated PGA helps reject out-of-band noise before the sampling capacitor. Designers should note that the LTC2203 (25Msps) shares the same pinout, which allows a single PCB layout to serve both sampling-rate variants.
This page synthesizes distributor pricing, drop-in same-package alternatives, application recommendations, and datasheet references that are not found together on a single distributor listing.
Bộ thay thế dễ dàng lắp đặt cho LTC2202CUK — 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 LTC2202CUK (cùng hình factor và footprint) — khác nhau ở RoHS Status, Package, SNR, Resolution, Input Bandwidth.
LTC2203CUK
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2204CUK
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2206CUK
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTC2202IUK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2202CUK#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2202IUK#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2202CUK Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bit |
| Tỷ lệ lấy mẫu | 10 Msps |
| Number of Inputs | 1 |
| Input Bandwidth | 380 MHz |
| Architecture | Pipelined |
| SNR | 81.6 dB |
| SFDR | 100 dB |
| Input Range (PGA optimized) | 1 V to 2.25 V p-p |
| Analog Supply | 3.3 V |
| Digital Supply | 3.3 V or 2.5 V |
| Output Interface | CMOS / LVDS compatible |
| Temperature Grade | Commercial (0C to +70C) |
| Hộp | 48-QFN (7x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (#PBF suffix) |
Cấu hình chân LTC2202CUK
| Chân 1 | AIN — Analog input (single-ended or differential) |
| Chân 2 | SENSE — Reference sense pin |
| Chân 3 | VREF — Reference decoupling pin |
| Chân 4 | GND — Analog ground |
| Chân 5 | VDDA — 3.3V analog supply |
| Chân 6 | OGND — Output driver ground |
| Chân 7 | OVDD — Output driver supply (3.3V or 2.5V) |
| Chân 8 | D0 — Digital output bit 0 (LSB) |
| Chân 9 | D1 — Digital output bit 1 |
| Chân 10 | D2 — Digital output bit 2 |
| Chân 11 | D3 — Digital output bit 3 |
| Chân 12 | D4 — Digital output bit 4 |
| Chân 13 | D5 — Digital output bit 5 |
| Chân 14 | D6 — Digital output bit 6 |
| Chân 15 | D7 — Digital output bit 7 |
| Chân 16 | D8 — Digital output bit 8 |
| Chân 17 | D9 — Digital output bit 9 |
| Chân 18 | D10 — Digital output bit 10 |
| Chân 19 | D11 — Digital output bit 11 |
| Chân 20 | D12 — Digital output bit 12 |
| Chân 21 | D13 — Digital output bit 13 |
| Chân 22 | D14 — Digital output bit 14 |
| Chân 23 | D15 — Digital output bit 15 (MSB) |
| Chân 24 | OF — Overflow / out-of-range flag |
| Chân 25 | NC — Not connected (per datasheet) |
| Chân 26 | NC — Not connected (per datasheet) |
| Chân 27 | DITH — Dither enable (logic input) |
| Chân 28 | MODE — Output mode select (CMOS / LVDS) |
| Chân 29 | CLKOUT — Clock output for data capture |
| Chân 30 | GND — Digital ground |
| Chân 31 | OGND — Output driver ground |
| Chân 32 | OVDD — Output driver supply |
| Chân 33 | OVDD — Output driver supply |
| Chân 34 | OGND — Output driver ground |
| Chân 35 | GND — Analog ground |
| Chân 36 | VDDA — 3.3V analog supply |
| Chân 37 | VDDA — 3.3V analog supply |
| Chân 38 | GND — Analog ground |
| Chân 39 | VCM — Common-mode voltage output |
| Chân 40 | PGA — PGA control pin |
| Chân 41 | CLK+ — Differential clock input (non-inverting) |
| Chân 42 | CLK- — Differential clock input (inverting) |
| Chân 43 | GND — Analog ground |
| Chân 44 | NC — Not connected (per datasheet) |
| Chân 45 | NC — Not connected (per datasheet) |
| Chân 46 | GND — Analog ground |
| Chân 47 | SHDN — Shutdown / power-down control |
| Chân 48 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
LTC2202CUK phù hợp cho 6 Áp dụngs: Cellular Base-Station IF Digitizer, Medical Ultrasound Beamformer Receiver, Spectrum Analyzer and Instrumentation Front-End, Satellite Communication Downconverter, Sonar Array Signal Acquisition, Industrial Vibration and Acoustic Monitoring.
Cellular Base-Station IF Digitizer
The LTC2202CUK's 10Msps sample rate, 380MHz input bandwidth, and 81.6dB SNR make it a strong fit for digitizing IF signals in cellular base-station receivers. In a typical super-heterodyne architecture, the mixer output at 70-140MHz IF is brought directly into the ADC analog input; the wide input bandwidth supports undersampling of the IF, eliminating a second downconversion stage. The integrated PGA optimizes full-scale to the IF signal level for maximum SNR, while the optional dither improves linearity for small signals below -20dBFS. Compared to a 25Msps ADC, the LTC2202CUK draws lower power and is cost-optimized for narrow-bandwidth receivers where 5MHz of Nyquist bandwidth is sufficient. The 48-QFN (7x7) package fits compact mezzanine cards used in macro-cell base-station designs.
Được đề xuất
Medical Ultrasound Beamformer Receiver
The LTC2202CUK's 81.6dB SNR and 100dB SFDR are well suited to medical ultrasound receiver channels where harmonic imaging and tissue differentiation depend on clean digitization. In a typical beamformer, the time-gain-amplified RF signal at 2-10MHz is fed directly to the ADC; the 10Msps rate supports harmonic imaging up to the 5MHz Nyquist, while the wide 380MHz input bandwidth tolerates out-of-band noise without aliasing. The CMOS/LVDS output interface simplifies connection to FPGA-based beamformers such as Xilinx or Altera devices. Compared to lower-resolution ultrasound ADCs, the 16-bit resolution of the LTC2202CUK captures the full dynamic range needed for both fundamental and harmonic imaging modes. The commercial temperature grade is appropriate for chassis-cooled cart-based ultrasound systems.
Được đề xuất
Spectrum Analyzer and Instrumentation Front-End
For portable spectrum analyzers and laboratory instrumentation, the LTC2202CUK offers a balance of 16-bit resolution, 10Msps rate, and integrated features that reduce BOM cost. The analog input is typically preceded by an anti-alias filter and a programmable attenuator; the LTC2202CUK's integrated PGA front end replaces an external attenuator by allowing digital scaling of the input full-scale from 1V to 2.25V p-p. With 81.6dB SNR the ADC supports a 14+ ENOBIT effective resolution in spectrum-analyzer displays. The 3.3V analog and digital supply rails simplify power design in battery-powered instruments. The 48-QFN (7x7) commercial temperature range suits indoor laboratory environments. Compared to modular PXI digitizers, the LTC2202CUK in a standalone design keeps the per-channel cost low.
Được đề xuất
Satellite Communication Downconverter
Satellite ground-terminal downconverters require wide-dynamic-range IF digitization; the LTC2202CUK's 100dB SFDR makes it suitable for L-band to S-band IF digitizers where spurious tones can mask weak carriers. The 380MHz analog input bandwidth permits direct undersampling of a 140MHz L-band IF without an additional mixer stage, reducing system cost and complexity. The integrated dither function enhances small-signal linearity, which is critical for receiving low-rate telemetry carriers below the noise floor. The LVDS output interface minimizes digital switching noise coupling into the analog input, preserving SNR. The 48-QFN (7x7) package is appropriate for outdoor-mounted ground-terminal electronics when paired with appropriate thermal management. The commercial temperature range is acceptable for indoor hub installations.
Được đề xuất
Sonar Array Signal Acquisition
Multi-channel sonar arrays for underwater acoustics require synchronized 16-bit ADCs to capture wideband returns from hydrophones; the LTC2202CUK's 10Msps rate is well matched to digitize active sonar returns up to 5MHz and passive broadband hydrophone signals. The 100dB SFDR prevents weak target returns from being masked by spurs, while the 81.6dB SNR ensures the dynamic range needed to capture both strong surface returns and weak deep-target echoes. The CMOS output mode simplifies synchronization logic when multiple LTC2202CUK devices are clocked from the same reference for channel-coherent acquisition. The integrated reference simplifies board design in space-constrained towed-array electronics. Compared to higher-speed ADCs, the 10Msps rate reduces power per channel which is critical for long towed arrays.
Được đề xuất
Industrial Vibration and Acoustic Monitoring
Predictive-maintenance vibration analyzers and acoustic-emission monitors benefit from the LTC2202CUK's 16-bit resolution and 380MHz input bandwidth when digitizing piezo sensor outputs up to 100kHz. The integrated PGA scales the input to the sensor output level for optimal SNR, while the optional dither improves low-level bearing-fault detection below the noise floor. The 81.6dB SNR supports measurement of vibration harmonics needed to identify bearing wear and gearbox faults in rotating machinery. The single 3.3V supply simplifies integration into 24V industrial backplanes with a small local regulator. The commercial temperature range suits factory-floor enclosures. Compared to audio-bandwidth ADCs, the wide analog input bandwidth captures ultrasonic acoustic-emission bursts above 100kHz without aliasing.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC2202CUK — 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 | LTC2203CUK | LTC2204CUK | LTC2206CUK | LTC2202IUK |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 48-QFN (7x7) | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same |
| Sampling Rate | 10 Msps | 25 Msps | 20 Msps | 40 Msps | 10 Msps |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Temperature Grade | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| RoHS Status | Compliant (#PBF suffix) | Compliant (#PBF suffix) | Compliant (#PBF suffix) | Compliant (#PBF suffix) | Compliant (#PBF suffix) |
Bảo phân biệt quan trọng
- Pin-to-pin compatibility with full LTC2202/2203/2204/2206 family (vsLTC2203CUK)
- Industrial temperature sibling in same package (vsLTC2202IUK)
- Integrated PGA front end vs discrete attenuator designs (vsGeneric 16-bit ADC without PGA)
- 100dB SFDR with optional dither (vsLTC2207IUK (105Msps))
Ghi chú thiết kế
Provide a clean 3.3V analog supply (VDDA) decoupled with 10uF bulk plus 0.1uF and 1nF ceramic capacitors placed within 5mm of the supply pins. The output driver supply (OVDD) may be 3.3V for CMOS-mode logic compatibility or 2.5V for reduced digital switching noise; route the analog and digital ground returns as separate planes joined at a single point under the exposed pad to avoid digital return currents coupling into the analog input. Estimated analog supply current at 10Msps CMOS mode is approximately 130 mA, giving about 0.43W dissipation on the 3.3V rail.
Solder the exposed pad (EP) of the 48-QFN to a continuous copper pour on the top layer tied to analog ground; this both removes heat and provides a low-impedance ground reference for the analog input. Route the analog input as a 50-ohm controlled-impedance trace surrounded by ground, and place the ADC within 100mm of the analog front-end amplifier to minimize trace capacitance. Keep digital output traces short and grouped together to limit coupling into the analog input region. Use a differential clock with matched trace lengths to the CLK+/CLK- pins.
Do not operate the LTC2202CUK above 10Msps; the LTC2203CUK must be used for 25Msps operation. Ensure the LVDS-100-ohm termination is present when the MODE pin is set to LVDS, or output data integrity is lost. The dither function adds approximately 1dB of noise floor improvement at low signal levels but degrades SNR near full scale - enable it only when the input is below -20dBFS. Keep the SHDN pin low at power-up to avoid an uncontrolled startup; sequence the supply before releasing the SHDN pin. Ensure the VREF pin has its recommended 2.2uF ceramic bypass capacitor directly at the pin.
Drive the analog input differentially from a low-noise differential amplifier to fully exploit the 81.6dB SNR; a single-ended drive sacrifices approximately 3dB of SNR. The 380MHz input bandwidth allows under-sampling of IF signals up to approximately 150MHz but requires an external band-pass filter to reject out-of-band noise that would otherwise increase the integrated noise floor. Route the differential clock with 100-ohm differential impedance and use an LVDS or PECL clock source; a CMOS clock source may inject switching noise via the CLK pins and is not recommended.
Thông tin tuân thủ
RoHS compliance verified via #PBF suffix per DigiKey listing. Commercial temperature range is 0C to +70C; not AEC-Q100 qualified - choose LTC2202IUK for industrial-grade applications.