LTC2173IUKG-14 - 14-Bit 80Msps Quad ADC | Analog Devices
MPN: LTC2173IUKG-14 ✓ פעילLTC2173IUKG-14 סקירה
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes. Quad ADCs integrate four converter channels on a single die, enabling simultaneous sampling of multiple signals - critical for multi-channel communication, phased-array radar, and medical imaging systems. The LTC2173IUKG-14 belongs to the pipelined ADC architecture family, where each conversion stage processes a few bits and passes the residue to the next stage; this allows high sample rates with low power per channel. Within the broader product taxonomy, this part falls under ADC -> data converter -> signal chain IC -> semiconductor.
Key specifications include 14-bit resolution, 80 Msps sample rate per channel, 73.1 dB SNR (typical at 14 MHz input), 90 dB SFDR, and 1.4 GHz analog input bandwidth. The device operates from a single 1.8 V supply, supports LVDS/LVCMOS output formats, and offers a serial SPI port for mode programming. It also integrates an internal bandgap reference and provides per-channel offset calibration.
The pipeline architecture delivers 80 Msps sample rates with only 4 clock cycles of latency, making the LTC2173IUKG-14 well-suited for real-time signal processing. Its low power consumption allows dense multi-channel layouts without complex thermal management. The 52-pin QFN package exposes the thermal die pad for direct PCB heat dissipation, simplifying board design in space-constrained applications.
Typical applications include multi-carrier wireless base station receivers, portable ultrasound imaging front-ends, industrial data acquisition systems, and software-defined radio (SDR) platforms. Engineers value this part for its ability to capture four synchronized analog signals in a small footprint while maintaining excellent dynamic range.
When designing with this ADC, allocate at least 4 layers for the PCB with a continuous ground plane under the QFN thermal pad. Use 0.1 uF and 10 uF decoupling capacitors close to each supply pin, and route LVDS output pairs with 100 ohm differential impedance and length matching within 5 mm to preserve SNR.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical layout notes not found in the manufacturer datasheet.
חלופות תחליף ישיר עבור LTC2173IUKG-14 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LTC2173IUKG-14 (אותו גורם צורה וטביעת רגל) — שונים ב Package, Resolution, Number of Channels, Digital Output Interface, Input Type.
LTC2173CUKG-14
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LTC2174IUKG-14
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2175IUKG-14
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LTC2172IUKG-12
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2171IUKG-12
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2171CUKG-14
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2173IUKG-14 דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 14 bit |
| Number of Channels | 4 (simultaneous sampling) |
| Sample Rate per Channel | 80 Msps |
| Architecture | Pipelined |
| Input Type | Differential (single-ended optional) |
| Analog Input Bandwidth | 1.4 GHz |
| SNR (typical) | 73.1 dB at 14 MHz input |
| SFDR | 90 dB |
| Power Dissipation per Channel | 120 mW at 80 Msps |
| מתח אספקה | 1.8 V (single) |
| Digital Output Interface | LVDS (serial) |
| טווח טמפרטורת פעולה | -40C to +85C (industrial grade) |
| מארז | 52-pin QFN (UKG) 7x8 mm with exposed pad |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 (168 hours) |
| סטטוס RoHS | Compliant |
| Lead-Free | Yes |
תצורת פינים של LTC2173IUKG-14
| פין 1 | INA+ — Channel A positive analog input |
| פין 2 | INA- — Channel A negative analog input |
| פין 3 | INB+ — Channel B positive analog input |
| פין 4 | INB- — Channel B negative analog input |
| פין 5 | INC+ — Channel C positive analog input |
| פין 6 | INC- — Channel C negative analog input |
| פין 7 | IND+ — Channel D positive analog input |
| פין 8 | IND- — Channel D negative analog input |
| פין 9 | VCM — Common mode voltage output |
| פין 10 | GND — Ground |
| פין 11 | CLK+ — Clock positive input |
| פין 12 | CLK- — Clock negative input |
| פין 13 | GND — Ground |
| פין 14 | OE — Output enable (active high) |
| פין 15 | GND — Ground |
| פין 16 | SDI — Serial data input (SPI) |
| פין 17 | SDO — Serial data output (SPI) |
| פין 18 | SCK — Serial clock input (SPI) |
| פין 19 | CS — Chip select (active low) |
| פין 20 | GND — Ground |
| פין 21 | OUTA+ — Channel A LVDS positive output |
| פין 22 | OUTA- — Channel A LVDS negative output |
| פין 23 | OUTB+ — Channel B LVDS positive output |
| פין 24 | OUTB- — Channel B LVDS negative output |
| פין 25 | OUTC+ — Channel C LVDS positive output |
| פין 26 | OUTC- — Channel C LVDS negative output |
| פין 27 | OUTD+ — Channel D LVDS positive output |
| פין 28 | OUTD- — Channel D LVDS negative output |
| פין 29 | GND — Ground |
| פין 30 | VDD — 1.8V digital supply |
| פין 31 | VDD — 1.8V digital supply |
| פין 32 | GND — Ground |
| פין 33 | OVDD — 1.8V output driver supply |
| פין 34 | FR+ — Frame output positive |
| פין 35 | FR- — Frame output negative |
| פין 36 | CLKOUT+ — Clock output positive |
| פין 37 | CLKOUT- — Clock output negative |
| פין 38 | GND — Ground |
| פין 39 | VDD — 1.8V digital supply |
| פין 40 | SENSE — Voltage reference sense pin |
| פין 41 | VREF — Voltage reference bypass |
| פין 42 | GND — Ground |
| פין 43 | VCMBYP — Common mode bypass |
| פין 44 | GND — Ground |
| פין 45 | NC — Not connected |
| פין 46 | NC — Not connected |
| פין 47 | NC — Not connected |
| פין 48 | NC — Not connected |
| פין 49 | MODE — Mode select |
| פין 50 | GND — Ground |
| פין 51 | VA25 — 2.5V analog supply |
| פין 52 | VA25 — 2.5V analog supply |
יישומים טיפוסיים
LTC2173IUKG-14 מתאים עבור 6 יישוםs: Multi-Carrier Wireless Base Station Receiver, Portable Ultrasound Imaging Front-End, Industrial Multi-Channel Data Acquisition, Software Defined Radio (SDR) Platform, Phased Array Radar Signal Digitization, Automated Test Equipment (ATE) Digitizer.
Multi-Carrier Wireless Base Station Receiver
The LTC2173IUKG-14's four simultaneous-sampling 14-bit channels at 80 Msps capture multiple carrier signals in a compact footprint. Its 73.1 dB SNR and 90 dB SFDR support wide dynamic range reception needed for multi-carrier GSM/LTE systems. Placed at the IF output of each receiver chain, the ADC digitizes up to four antenna streams with deterministic latency. The 1.8 V single-supply operation simplifies the power tree, and the 52-pin QFN package with exposed pad provides efficient thermal dissipation for -40C to +85C industrial operation.
מומלץ
Portable Ultrasound Imaging Front-End
In portable ultrasound, the LTC2173IUKG-14's 4-channel simultaneous sampling at 80 Msps enables digital beamforming across transducer elements. The 1.4 GHz analog input bandwidth captures the full bandwidth of ultrasound transducers, while 73.1 dB SNR preserves subtle tissue contrast differences critical for diagnostic imaging. Low power consumption (~120 mW per channel) keeps thermal load manageable in handheld probes. The compact 52-pin QFN (7x8 mm) package fits densely on beamformer boards where 32-128 channels must be tightly packed.
מומלץ
Industrial Multi-Channel Data Acquisition
The LTC2173IUKG-14 serves as the core digitizer in industrial DAQ systems requiring synchronized sampling of up to four sensor inputs. Its 14-bit resolution and 80 Msps provide sufficient bandwidth for vibration analysis, acoustic emission monitoring, and high-speed control loop feedback. The LVDS serial output minimizes pin count on the 52-pin QFN, easing board layout in dense backplane designs. Industrial temperature grade (-40C to +85C) ensures reliable operation in factory floor environments.
מומלץ
Software Defined Radio (SDR) Platform
For SDR applications, the LTC2173IUKG-14's four channels enable multi-band capture with a single IC. The 80 Msps sample rate and 1.4 GHz analog input bandwidth support direct sampling of IF signals up to ~200 MHz. The pipelined architecture with deterministic latency simplifies timing alignment in DSP processing. The 1.8 V supply and low power per channel make it suitable for portable SDR platforms and tactical radio systems.
מומלץ
Phased Array Radar Signal Digitization
In phased array radar systems, the LTC2173IUKG-14 captures multiple receive channels simultaneously, preserving the phase relationships required for beam steering. Its 80 Msps sample rate supports IF digitization of typical X-band radar signals, while 73.1 dB SNR preserves signal-to-noise for target detection. The synchronized four-channel architecture eliminates timing skew across antenna elements - a critical requirement for coherent beamforming.
מומלץ
Automated Test Equipment (ATE) Digitizer
The LTC2173IUKG-14 is ideal for ATE digitizer cards requiring four simultaneous channels at high sample rate. Its 14-bit resolution and 73.1 dB SNR enable accurate waveform capture for production test of mixed-signal ICs, RF modules, and high-speed serial links. The deterministic pipeline latency (4 clock cycles) simplifies timing calibration in test fixtures. The compact 52-pin QFN allows dense channel count on PXI/cPCI digitizer modules.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LTC2173IUKG-14 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | LTC2173CUKG-14 | LTC2174IUKG-14 | LTC2175IUKG-14 | LTC2172IUKG-12 | LTC2171IUKG-12 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 52-pin QFN (UKG) 7x8 mm | 52-pin QFN (UKG) 7x8 mm - same | 52-pin QFN (UKG) 7x8 mm - same | 52-pin QFN (UKG) 7x8 mm - same | 52-pin QFN (UKG) 7x8 mm - same | 52-pin QFN (UKG) 7x8 mm - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit | 12 bit |
| Sample Rate | 80 Msps | 80 Msps | 105 Msps | 125 Msps | 80 Msps | 65 Msps |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
מבדילים עיקריים
- Lowest power consumption in 14-bit 80 Msps quad ADC class (לעומתLTC2175IUKG-14)
- Four simultaneous-sampling channels in compact 52-pin QFN (לעומתLTC2172IUKG-12)
- Industrial temperature grade in same package (לעומתLTC2173CUKG-14)
- Migration path to higher sample rates within same footprint (לעומתLTC2174IUKG-14 / LTC2175IUKG-14)
הערות תכנון
The 52-pin QFN (UKG) exposed thermal pad must be soldered to a continuous ground plane for proper thermal and electrical performance. Recommended PCB stackup: minimum 4 layers with dedicated ground layer directly beneath the ADC. Use an array of thermal vias (0.3 mm drill, 0.5 mm pitch, 9x9 array minimum) under the exposed pad to conduct heat to inner ground planes.
Place 0.1 uF and 10 uF X7R ceramic decoupling capacitors within 2 mm of each VDD and VA25 supply pin. The clock input (CLK+/CLK-) requires a low-jitter, low-phase-noise source; the LTC2175/SN65LVDSx jitter sensitivity is approximately 0.5 ps RMS. Use a dedicated low-noise LDO (such as ADP1741) for the VA25 supply to avoid coupling digital switching noise into the analog front end.
Route analog inputs (INA+/INA-) as 100 ohm differential microstrip with length matching within 2 mm between pairs. Keep analog input traces away from digital outputs and clock signals; use a guard ground trace between them. LVDS output pairs should be 100 ohm differential with length matching within 5 mm to preserve timing margins and minimize jitter.
Do not leave the MODE pin floating - tie it to GND for one set of operating modes or to VDD for the alternate mode. Ensure CS (chip select) returns high between SPI transactions to prevent register corruption. The SENSE pin voltage sets the internal reference; tying SENSE to VDD selects the internal reference while tying to GND selects external reference mode.
Estimated: At 80 Msps with 14-bit resolution, total aperture jitter budget is approximately 0.5 ps RMS for SNR to remain above 72 dB. Use a clock source with <300 fs RMS jitter. For clock distribution, the AD9516/AD9517 from Analog Devices provides adequate jitter performance. Buffer the clock at the ADC input with a high-speed differential receiver if the clock trace exceeds 25 mm.
מידע על תאימות
RoHS and REACH compliant per Analog Devices product page. Not AEC-Q100 qualified - this is a commercial/industrial grade ADC; contact Analog Devices for automotive grade options.
