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Analog Devices Inc. LTC2190CUKG#PBF
- Part No.:
- LTC2190CUKG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2190CUKG#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,473
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Product details
Overview
LTC2190CUKG#PBF from Analog Devices (formerly Linear Technology) is a 2-channel, simultaneous-sampling 16-bit analog-to-digital converter optimized for high-dynamic-range signal digitization at 25Msps. It delivers 77dB SNR and 90dB SFDR with ultralow 0.07psRMS aperture jitter, enabling undersampling of IF signals in communications infrastructure. Its serial LVDS outputs, single 1.8V supply, and 550MHz full-power bandwidth make it suitable for portable medical imaging and multi-channel data acquisition systems.
For engineers reviewing the LTC2190CUKG#PBF datasheet, LTC2190CUKG#PBF pinout, LTC2190CUKG#PBF application, or LTC2190CUKG#PBF equivalent, key selection criteria include its guaranteed ±2LSB INL (typ), 25Msps sampling rate, 1.8V single-supply operation, and QFN-52 package compatibility with thermal and layout constraints in high-density RF front-ends.
Technical Context
The LTC2190CUKG#PBF implements a dual 16-bit SAR ADC core with independent sample-and-hold circuits per channel, supporting true simultaneous sampling for phase-coherent multi-channel acquisition. Its internal clock duty cycle stabilizer maintains performance across wide input duty cycle ranges, and the serial LVDS interface supports configurable 1-/2-/4-lane output modes to minimize I/O count.
It integrates programmable input range selection (1VP-P to 2VP-P) via the SENSE pin, internal reference (1.25V ±25ppm/°C), and digital configuration via SPI-compatible serial port. Shutdown and nap modes reduce power to 1mW and 50mW respectively, while maintaining fast wake-up for burst-mode operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes over temperature - ensures monotonicity and full code coverage in precision measurement. |
| Sampling Rate | 25Msps maximum - defines real-time bandwidth for baseband and low-IF digitization in portable instrumentation. |
| SNR / SFDR | 77dB / 90dB at 70MHz input - enables high-fidelity capture of narrowband signals amid strong interferers. |
| Aperture Jitter | 0.07psRMS (differential encode) - limits sampling uncertainty to preserve ENOB above 14 bits at 100MHz. |
| Power Dissipation | 104mW total at 25Msps, 4-lane LVDS - balances performance and thermal load in space-constrained PCBs. |
| Analog Input BW | 550MHz full-power bandwidth - supports direct sampling of L-band RF signals without external amplification. |
| INL / DNL | ±2LSB (typ) / ±0.5LSB (typ) - guarantees linearity critical for calibration-sensitive applications like ultrasound beamforming. |
Pinout & Package
Package: 52-lead (7mm × 8mm) plastic QFN with exposed pad (Pin 53 = GND), requiring soldering to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCM1 (1), VCM2 (14) | Common-mode bias outputs | Nominally VDD/2; used to bias differential analog inputs AIN1± and AIN2± - must be bypassed with 0.1µF ceramic caps. |
| AIN1+ (3), AIN1– (4), AIN2+ (11), AIN2– (12) | Differential analog inputs | Accept 1–2VP-P signals with 550MHz bandwidth; common-mode rejection >80dB minimizes noise coupling. |
| ENC+ (17), ENC– (18) | Encode clock inputs | Support differential or single-ended (ENC– = GND) drive; internal duty cycle stabilizer enables robust timing at 25Msps. |
| OUT1A± to OUT1D± (37–44), OUT2A± to OUT2D± (23–30) | LVDS serial data outputs | Configurable 1/2/4-lane mode; on-chip 100Ω termination and adjustable 1.75/3.5mA current ensure clean signal integrity. |
| FR± (31/32), DCO± (35/36) | Frame and data clock outputs | Synchronous LVDS timing references for FPGA or ASIC capture - tFRAME and tDATA aligned to tSER within ±0.15×tSER. |
| PAR/SER (10), CS (19), SCK (20), SDI (21), SDO (46) | Serial programming interface | 3-wire SPI-compatible control (CS/SCK/SDI); SDO optional open-drain readback - enables runtime reconfiguration of LVDS lanes and power modes. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Enables phase-coherent acquisition for I/Q demodulation and time-of-flight measurements without inter-channel skew. |
| Programmable LVDS serialization | Reduces digital I/O count by up to 75% vs parallel interface - critical for routing density in high-speed PCB layouts. |
| Internal reference with ±25ppm/°C drift | Eliminates external reference IC and associated compensation circuitry, reducing BOM cost and board area. |
| 1.8V single-supply operation | Direct compatibility with modern low-voltage FPGAs and processors - avoids level-shifting and dual-rail power design. |
| Shutdown and nap modes | Reduces power to 1mW or 50mW during idle periods - extends battery life in portable medical and test equipment. |
Applications
| Portable Medical Ultrasound | Multi-Channel Data Acquisition |
|---|---|
|
Use Scenario: Digitizing echo return signals from phased-array transducers in handheld ultrasound devices. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q samples at 25Msps with <0.1ps jitter to preserve spatial resolution. Use Value: 77dB SNR enables detection of low-amplitude tissue boundaries; 550MHz bandwidth supports harmonic imaging up to 15MHz. |
Use Scenario: Simultaneous voltage/current monitoring across 8+ sensor channels in industrial PLC modules. IC Role / Device Role / Timing Role: Two independent 16-bit ADCs acquiring synchronized samples for real-time FFT analysis and fault detection. Use Value: ±2LSB INL ensures accurate calibration across temperature; serial LVDS simplifies FPGA interface with minimal trace count. |
| Cellular Base Station Monitoring | Nondestructive Testing (NDT) |
|
Use Scenario: Capturing RF feedback paths and PA distortion signatures in LTE/5G remote radio units. IC Role / Device Role / Timing Role: Undersampling IF signals at 70MHz with 90dB SFDR to resolve adjacent-channel interference. Use Value: 0.07psRMS jitter preserves EVM below 1.5% at 20MHz modulation bandwidth; 1.8V supply eases thermal management. |
Use Scenario: High-fidelity digitization of ultrasonic pulse-echo waveforms in pipeline corrosion scanners. IC Role / Device Role / Timing Role: Simultaneous sampling of transmit/receive channels to measure time-of-flight with sub-nanosecond precision. Use Value: Pipeline latency of 7 cycles enables deterministic timing alignment; shutdown mode conserves power between pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 16-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9269BCPZ-20 | 20Msps, 16-bit, 76.5dB SNR, 85dB SFDR, 1.8V/3.3V dual supply, parallel CMOS output | Lower sampling rate and SFDR; requires separate digital supply and more PCB routing | Preferred when parallel interface and lower power (85mW) outweigh serial interface benefits |
| ADS52J90IRGCT | 200Msps, 16-bit, 73.5dB SNR, 87dB SFDR, 1.8V/3.3V supplies, JESD204B interface | Higher speed but lower SNR; JESD204B adds FPGA complexity vs LVDS simplicity | Chosen for wideband spectrum analysis where 200Msps captures >100MHz instantaneous bandwidth |
Compared with AD9269BCPZ-20 and ADS52J90IRGCT, the LTC2190CUKG#PBF offers superior SNR and SFDR at its 25Msps rating, simpler LVDS interface with integrated termination, and single-supply operation-making it optimal for precision, thermally constrained, and layout-sensitive applications.
Availability
LTC2190CUKG#PBF is available at Aetrix Electronics and suitable for portable medical imaging, multi-channel data acquisition, and nondestructive testing applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for LTC2190CUKG#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2190CUKG#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications where dynamic range, low jitter, and low power coexist in compact form factors.
FAQ
What is the maximum sampling rate supported by the LTC2190CUKG#PBF?
The LTC2190CUKG#PBF is rated for a maximum sampling rate of 25Msps. This speed grade is fixed per device variant - the LTC2190 family is distinct from the LTC2191 (40Msps) and LTC2192 (65Msps). Operating beyond 25Msps violates specifications and degrades SNR/SFDR performance.
Does the LTC2190CUKG#PBF require an external reference voltage?
No, the LTC2190CUKG#PBF includes an internal 1.25V reference with ±25ppm/°C drift and can operate with only the SENSE pin configured for ±0.5V, ±1V, or ±0.8×VSENSE input ranges. An external reference is optional and only needed when higher accuracy or custom scaling is required.
How is the LVDS output current configured on the LTC2190CUKG#PBF?
The LVDS output current on the LTC2190CUKG#PBF is set to either 1.75mA or 3.5mA per lane using the SDO pin in parallel programming mode (PAR/SER = VDD), or via SPI register write in serial mode. The default is 3.5mA, and internal 100Ω termination is enabled by default for each differential pair.
What is the operating temperature range for the LTC2190CUKG#PBF?
The LTC2190CUKG#PBF is specified for commercial-grade operation from 0°C to +70°C. This is indicated by the "C" suffix in the part number. Industrial-grade variants (e.g., LTC2190IUKG#PBF) support –40°C to +85°C but are not interchangeable without qualification.
Can the LTC2190CUKG#PBF be used with single-ended encode clock inputs?
Yes, the LTC2190CUKG#PBF supports single-ended encode operation by tying ENC– to GND and driving ENC+ with a TTL, CMOS, or PECL signal. In this mode, aperture jitter increases slightly to 0.09psRMS, but full 25Msps operation remains supported with proper signal integrity.
LTC2190CUKG#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 52-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 25M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2190CUKG#PBF FAQ
1.How can I place an order for LTC2190CUKG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2190CUKG#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC2190CUKG#PBF reliable?
The price and inventory of LTC2190CUKG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2190CUKG#PBF is usually 5 days.
3.What payment methods are accepted for LTC2190CUKG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2190CUKG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2190CUKG#PBF?
LTC2190CUKG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2190CUKG#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC2190CUKG#PBF?
For technical support, including LTC2190CUKG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2190CUKG#PBF requirements.
6.How does Aetrix verify that LTC2190CUKG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2190CUKG#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC2190CUKG#PBF meets industry standards.
7.What is the process for return or replacement of LTC2190CUKG#PBF?
All LTC2190CUKG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2190CUKG#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC2190CUKG#PBF part is unused and in its original packaging.
Return procedure for LTC2190CUKG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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