LTC2162IUK - 16-Bit 65Msps Low Power ADC | Analog Devices
MPN: LTC2162IUK ✓ Hoạt độngLTC2162IUK Tóm tắt
What is a pipelined ADC: A pipelined analog-to-digital converter is a multi-stage sampling converter that processes analog input through a cascade of low-resolution flash stages and a digital error-correction back end. Pipelined ADCs sit within the hierarchy of Nyquist ADCs and offer the best trade-off between sample rate, resolution, and power consumption, making them the workhorse of communications infrastructure, test instrumentation, and software-defined radio.
The converter integrates a single differential input channel, an internal reference, and configurable digital outputs ranging from CMOS/LVDS parallel to serial SPI/LVDS, allowing direct interface to FPGAs, DSPs, and ASICs. Differential analog inputs (1 Vp-p or 2 Vp-p) feed an internal sample-and-hold, simplifying front-end design. Maximum power dissipation is approximately 140 mW at 65 Msps with CMOS output, suiting thermally constrained dense boards.
The integrated bandgap reference, clock duty-cycle stabilizer, and programmable digital gain/offset calibration remove the need for external circuitry in many applications. Internal reference can also be overdriven for best gain-drift performance in instrumentation.
Typical applications include communications receivers, software-defined radio (SDR), basestation IF sampling, portable instrumentation, ultrasound imaging front ends, and multichannel data-acquisition systems. The wide input bandwidth (>300 MHz differential) also supports direct IF sampling of cellular and cable-infrastructure signals.
When designing with this device, ensure the analog input common-mode bias is well-bypassed and that the exposed pad is soldered to a low-impedance ground plane for thermal relief. The internal duty-cycle stabilizer removes the need for an external clock jitter-cleaner at sample rates up to 65 Msps, but upstream PLL jitter still degrades SNR.
This page synthesizes authorized distributor pricing, pin-to-pin drop-in alternatives within the QFN-52 footprint, and practical PCB-layout guidance not consolidated in the manufacturer datasheet, helping engineers choose between the LTC2162, LTC2161, and LTC2160 speed grades with full design context.
Bộ thay thế dễ dàng lắp đặt cho LTC2162IUK — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
LTC2162IUK#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2162IUK#TRPBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2161IUK
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTC2160IUK
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTC2162CUK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2192IUKG#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTC2162IUK Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bit |
| Number of Input Channels | 1 |
| Architecture | Pipelined |
| Sample Rate (Max) | 65 Msps |
| Input Type | Differential (Pseudo-Differential) |
| Phạm vi điện áp đầu vào | 1 Vp-p or 2 Vp-p |
| Analog Supply Voltage | 1.7 V to 1.9 V |
| Digital Output Supply | 1.1 V to 1.9 V (CMOS/LVDS selectable) |
| SNR | 77 dB |
| SFDR | 90 dB |
| Aperture Jitter | 0.07 ps RMS |
| Digital Output Interface | Parallel CMOS / Parallel LVDS / Serial SPI / Serial LVDS |
| Reference | Internal (with external override) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 52-lead 7x7 mm QFN-EP (UK package) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (PBF suffix per DigiKey listing) |
Cấu hình chân LTC2162IUK
| Chân 1 | VREF — Reference voltage bypass |
| Chân 2 | GND — Ground |
| Chân 3 | AIN+ — Differential analog input (positive) |
| Chân 4 | AIN- — Differential analog input (negative) |
| Chân 5 | GND — Ground |
| Chân 6 | GND — Ground |
| Chân 7 | ENC+ — Encode clock input (positive) |
| Chân 8 | ENC- — Encode clock input (negative) |
| Chân 9 | GND — Ground |
| Chân 10 | OVL — Overflow/overrange indicator |
| Chân 11 | D15/D0/CKOUT — Parallel data bit 15 / serial data output / clock out (mode dependent) |
| Chân 12 | D14/D1/FRAME — Parallel data bit 14 / serial framing |
| Chân 13 | D13/D2/BTX+ — Parallel data bit 13 / serial LVDS BTX positive |
| Chân 14 | D12/D3/BTX- — Parallel data bit 12 / serial LVDS BTX negative |
| Chân 15 | D11 — Parallel data bit 11 |
| Chân 16 | D10 — Parallel data bit 10 |
| Chân 17 | D9 — Parallel data bit 9 |
| Chân 18 | D8 — Parallel data bit 8 |
| Chân 19 | OGND — Output driver ground |
| Chân 20 | OVDD — Output driver supply |
| Chân 21 | OE — Output enable (active high) |
| Chân 22 | OF — Output format select |
| Chân 23 | CS — Chip select for SPI mode |
| Chân 24 | SCK — SPI serial clock input |
| Chân 25 | SDI — SPI serial data input |
| Chân 26 | SDO — SPI serial data output |
| Chân 27 | GAIN — Programmable analog input gain |
| Chân 28 | VCM — Common-mode voltage bypass |
| Chân 29 | GND — Ground |
| Chân 30 | AVDD — Analog 1.8 V supply |
| Chân 31 | GND — Ground |
| Chân 32 | GND — Ground |
| Chân 33 | AVDD — Analog 1.8 V supply |
| Chân 34 | GND — Ground |
| Chân 35 | GND — Ground |
| Chân 36 | D7 — Parallel data bit 7 |
| Chân 37 | D6 — Parallel data bit 6 |
| Chân 38 | D5 — Parallel data bit 5 |
| Chân 39 | D4 — Parallel data bit 4 |
| Chân 40 | D3 — Parallel data bit 3 |
| Chân 41 | D2 — Parallel data bit 2 |
| Chân 42 | D1 — Parallel data bit 1 |
| Chân 43 | D0 — Parallel data bit 0 |
| Chân 44 | DRVDD — Digital output driver supply |
| Chân 45 | GND — Ground |
| Chân 46 | DNC — Do not connect |
| Chân 47 | DNC — Do not connect |
| Chân 48 | DNC — Do not connect |
| Chân 49 | DNC — Do not connect |
| Chân 50 | GND — Ground |
| Chân 51 | GND — Ground |
| Chân 52 | DGND — Digital core ground |
| Chân 53 | EP — Exposed thermal pad - must be soldered to ground plane |
Ứng dụng tiêu biểu
LTC2162IUK phù hợp cho 6 Áp dụngs: Software-Defined Radio (SDR) Receiver, Cellular Base Station IF Sampling, Portable Test and Measurement Instrumentation, Ultrasound Imaging Front End, Wideband Data Acquisition Systems, Communications Test Equipment.
Software-Defined Radio (SDR) Receiver
The LTC2162IUK delivers 65 Msps throughput with 90 dB SFDR and 0.07 ps RMS aperture jitter, which are the three parameters that determine whether an ADC can undersample a wide-bandwidth IF signal without introducing aliasing artifacts. Placed between the RF front-end mixer and the FPGA DSP pipeline, it captures intermediate-frequency signals up to several hundred MHz directly, eliminating a second downconversion stage and shrinking the RF signal chain.
Được đề xuất
Cellular Base Station IF Sampling
Cellular baseband receivers benefit from the LTC2162IUK's 77 dB SNR, which directly sets the receiver's EVM noise floor under processing gain. Mounted on the LTE or 5G-NR receiver card, it digitizes a 30-200 MHz IF after the SAW filter, allowing the remaining demodulation to occur in the FPGA. Differential 1 Vp-p or 2 Vp-p input ranges let designers trade dynamic range for noise figure via front-end attenuator settings.
Được đề xuất
Portable Test and Measurement Instrumentation
The LTC2162IUK's combination of 16-bit resolution, 65 Msps sample rate, and sub-200 mW power dissipation suits handheld oscilloscope, spectrum analyzer, and signal-analyzer front ends. Designers can place it directly after the input attenuator and antialias filter to capture 30 MHz bandwidth signals in field instruments. Industrial -40C to +85C operation supports outdoor or factory-floor deployments.
Được đề xuất
Ultrasound Imaging Front End
In medical and industrial ultrasound systems, the LTC2162IUK is positioned after the TGC (time-gain control) amplifier and immediately ahead of the beamforming FPGA, providing 65 Msps to capture RF echo returns spanning several harmonics of the fundamental transmit frequency. Its 77 dB SNR maintains 12+ effective bits at the imaging chain output, which directly translates into diagnostic dynamic range and depth-of-penetration.
Được đề xuất
Wideband Data Acquisition Systems
The LTC2162IUK adds 65 Msps of precision to multi-channel data-acquisition cards, capturing transient and vibration data in motors, turbines, and aerospace test rigs. Differential analog inputs reject common-mode noise picked up by long sensor cables, and the integrated bandgap reference removes the requirement for an external precision reference at moderate temperature ranges.
Được đề xuất
Communications Test Equipment
Communications testers (vector signal analyzers, signal generators, multisimulator test benches) use the LTC2162IUK to digitize standards-compliant waveforms such as LTE, 5G NR, and DOCSIS 3.1. Its 90 dB SFDR keeps modulation sidebands visible up to high input frequencies, while LVDS output modes reduce EMI by switching the data bus at controlled edges.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC2162IUK — 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 | LTC2162IUK#PBF | LTC2162IUK#TRPBF | LTC2161IUK | LTC2162CUK | LTC2192IUKG#PBF |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 52-lead QFN-EP (UK) | 52-lead QFN-EP (UK) | 52-lead QFN-EP (UK) | 52-lead QFN-EP (UK) | 52-lead QFN-EP (UK) | 52-lead QFN-EP (UK) |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 14 bit | |
| Sample Rate | 65 Msps | 65 Msps | 40 Msps | 65 Msps | 65 Msps | |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C | 0C to +70C (Commercial) | -40C to +85C | |
| RoHS Status | Yes (with #PBF suffix) | RoHS compliant | RoHS compliant | Per suffix (#PBF) | Per suffix (#PBF) |
Bảo phân biệt quan trọng
- Highest-speed member of the LTC2160/2161/2162 pin-compatible family (vsLTC2161IUK (40 Msps))
- Industrial operating temperature for outdoor/cabinet use (vsLTC2162CUK (Commercial grade))
- Fully differential 1 Vp-p or 2 Vp-p input with internal duty-cycle stabilizer (vsLTC2192IUKG#PBF (14-bit variant))
Ghi chú thiết kế
Estimated: The exposed thermal pad (pin 53) must be soldered to a continuous low-impedance ground plane to meet the specified AC performance. Use at least 8 thermal vias under the pad (0.3 mm drill, 1.0 mm pitch) to a ground pour on layer 2. Missing thermal vias increase junction temperature by 15C, which can degrade SNR by 0.5 dB. Place 0.1 uF decoupling within 3 mm of every AVDD and DRVDD pin, and 10 uF bulk capacitors at each corner of the analog supply island.
Estimated: Clock source integrity is the single largest contributor to ADC SNR degradation. The 0.07 ps RMS aperture jitter budgets only ~250 fs of upstream clock jitter at 65 Msps; a noisy FPGA-PLL output with 2 ps RMS jitter will reduce SNR by ~10 dB. Use a dedicated low-jitter clock generator (such as AD9516 or AD9523) or a narrow-band jitter-cleaning PLL between the system clock and the ENC+/ENC- inputs. Enable the internal duty-cycle stabilizer to compensate for clock asymmetry up to 65 Msps.
Differential input traces must be length-matched within 0.5 mm to preserve the differential balance and 90 dB SFDR. Route the AIN+/AIN- pair on a 100 ohm differential impedance strip with ground-side shielding. Avoid routing over split planes; the QFN exposed pad requires a continuous ground flood underneath. For LVDS output modes, place 100 ohm differential terminations within 5 mm of the FPGA receiver pins.
Estimated: Isolate the analog AVDD (pin 30, 33) and digital DRVDD (pin 44) power islands using ferrite beads to prevent digital switching noise from coupling back into the analog front end. The data bus D0-D15 (pins 11-18, 36-43) is a high-current switching source that can corrupt the analog supply if not adequately filtered. Route all data and clock signals on the opposite side of the PCB from the analog inputs to minimize crosstalk.
Thông tin tuân thủ
RoHS compliance confirmed by DigiKey listing for the LTC2162IUK#PBF variant. AEC-Q100 not applicable (industrial grade only). Conflict-minerals compliance follows Analog Devices standard policy.
