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ADS4245IRGCT
Texas Instruments
IC ADC 14BIT PIPELINED 64VQFN
1562 Pcs New Original In Stock
14 Bit Analog to Digital Converter 2 Input 2 Pipelined 64-VQFN (9x9)
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ADS4245IRGCT
Product Overview
1260137
DiGi Electronics Part Number
ADS4245IRGCT-DGManufacturer
Texas Instruments
ADS4245IRGCT
Description
IC ADC 14BIT PIPELINED 64VQFNInventory
1562 Pcs New Original In Stock
14 Bit Analog to Digital Converter 2 Input 2 Pipelined 64-VQFN (9x9)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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ADS4245IRGCT Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
14
Sampling Rate (Per Second)
125M
Number of Inputs
2
Input Type
Differential
Data Interface
LVDS - Parallel, Parallel
Configuration
S/H-ADC
Ratio - S/H:ADC
1:1
Number of A/D Converters
2
Architecture
Pipelined
Reference Type
Internal
Voltage - Supply, Analog
1.7V ~ 1.9V
Voltage - Supply, Digital
1.7V ~ 1.9V
Features
Simultaneous Sampling
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN Exposed Pad
Supplier Device Package
64-VQFN (9x9)
Mounting Type
Surface Mount
Base Product Number
ADS4245
Datasheet & Documents
HTML Datasheet
ADS4245IRGCT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
3A991C3
HTSUS
8542.39.0001
Additional Information
Other Names
296-28771-1
296-28771-2
296-28771-6
-ADS4245IRGCT-NDR
-296-28771-1-DG
Standard Package
250
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Their variety ensures I always discover new solutions that suit my preferences.
Dec 02, 2025
DiGi Electronics' staff was courteous and professional, making my first purchase very pleasant.
Dec 02, 2025
Bulk purchasing through DiGi always results in cost savings.
Dec 02, 2025
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing the ADS4245IRGCT with a lower-cost 14-bit ADC like the Analog Devices AD9250 in a high-speed data acquisition system?
Replacing the ADS4245IRGCT with the AD9250 introduces several critical risks: the AD9250 uses a JESD204B serial interface instead of LVDS parallel, requiring significant FPGA logic changes and increasing latency. Additionally, the ADS4245IRGCT supports true simultaneous sampling on both channels—a feature not guaranteed in the AD9250 without external synchronization circuitry. Thermal performance also differs; the 64-VQFN package of the ADS4245IRGCT has an exposed pad optimized for heat dissipation, whereas the AD9250’s LFCSP may require additional PCB thermal vias. Always validate timing margins and reference stability under full load, as the internal reference architecture differs, potentially affecting long-term accuracy in precision applications.
How does the ADS4245IRGCT handle input overdrive recovery in radar or communications systems where transient signals exceed the differential input range?
The ADS4245IRGCT is not designed for sustained input overdrive and lacks internal overvoltage clamps. In radar or wideband comms applications, even brief transients can cause prolonged recovery due to internal pipeline settling and charge injection into the sample-and-hold stage. TI recommends external anti-aliasing filters with fast-recovery op-amps (e.g., THS4531A) and series resistors (10–50 Ω) to limit current. Without these, metastability or code errors may persist for multiple clock cycles. Always simulate or bench-test worst-case transient scenarios—especially with pulsed signals—to ensure the ADS4245IRGCT returns to valid conversion within your system’s timing budget.
Can the ADS4245IRGCT be safely operated at its maximum sampling rate of 125 MSPS with a single 1.8V supply rail, or do analog and digital supplies need separate regulation for stable performance?
While the ADS4245IRGCT accepts a single 1.8V supply (within 1.7V–1.9V range), sharing one rail for both analog and digital domains significantly increases risk of substrate noise coupling, especially at 125 MSPS. TI’s evaluation module uses separate LDOs (e.g., TPS7A47 for analog, TPS7A33 for digital) to minimize digital switching noise from degrading SNR. If cost or board space constraints force a shared supply, implement strict partitioning: use ferrite beads, dedicated ground planes, and place decoupling caps (100 nF + 10 µF) within 2 mm of each power pin. Without isolation, you may observe 3–6 dB degradation in SFDR, particularly above 50 MHz input frequencies.
What layout considerations are critical when designing a PCB for the ADS4245IRGCT’s 64-VQFN exposed pad package to avoid moisture-related failures in humid environments?
The ADS4245IRGCT has an MSL 3 rating (168 hours floor life), meaning improper handling or layout can lead to popcorning or delamination in high-humidity conditions. The exposed thermal pad must be soldered to a grounded copper pour with multiple thermal vias (≥12 vias of 0.3 mm diameter) to ensure both thermal performance and moisture barrier integrity. Avoid large solder mask openings that trap moisture; instead, use a grid-pattern solder mask. Additionally, maintain a minimum 0.5 mm clearance between the pad edge and nearby traces to prevent solder wicking during reflow. For outdoor or industrial applications, conformal coating is strongly advised to mitigate long-term humidity exposure risks.
Is the ADS4245IRGCT suitable for replacing legacy ADCs like the ADS5400 in phased-array beamforming systems requiring deterministic latency across multiple channels?
Yes, but with caveats. The ADS4245IRGCT offers lower power and integrated features compared to the ADS5400, but its pipelined architecture introduces fixed latency (~6–8 clock cycles), which must be matched across all channels in a beamforming array. Unlike some older ADCs, the ADS4245IRGCT does not provide a latency adjustment mode, so system designers must implement digital delay compensation in the FPGA. Also, while both support LVDS outputs, the ADS4245IRGCT’s parallel LVDS requires tighter skew control (<50 ps between data and clock lines) to maintain timing alignment across channels. Verify phase coherence through lab testing with synchronized clock sources—mismatches here can degrade beamforming accuracy even if individual ADC specs are met.
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ADS4245IRGCT CAD Models
Texas Instruments ADS4245IRGCT PCB symbols & footprints
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