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SN74ALVC16835DL
Electronics Part Number
SN74ALVC16835DL-WXManufacturer
Analog Devices, Inc.
SN74ALVC16835DL
Description
Universal 18-Bit Bus Driver IC, 56-SSOPInventory
313 Pcs New Original In Stock
Voltage level translator circuit with multiple channels for bidirectional logic conversion.
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Minimum 1
Minimum 1
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Basic cost: USD 70.00
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Technical Specifications
Category
Interface, Direct Digital Synthesis (DDS)
Manufacturer
Analog Devices, Inc.
Packaging
Tray
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-TQFP Exposed Pad
Series
-
Base Product Number
AD9858
Product Status
Active
Voltage - Supply
3.14V ~ 3.47V
Supplier Device Package
100-TQFP-EP (14x14)
Resolution (Bits)
10 b
Master fclk
1 GHz
Tuning Word Width (Bits)
32 b
Data Sheet Document (D)
Datasheets
Download AD9858BSVZ Product Specification (PDF)
HTML Datasheet
AD9858BSVZ-DG
Design Resources
Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109)
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-2735-AD9858BSVZ 505-AD9858BSVZ 2156-AD9858BSVZ ANAANAAD9858BSVZ AD9858BSVZ-DG
Standard Package
1
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the AD9858BSVZ in a high-speed direct digital synthesis
When designing with the AD9858BSVZ at high output frequencies near its 1 GHz fclk limit, signal integrity and PCB layout become critical. Poor impedance control, inadequate grounding, or long trace lengths can introduce jitter, spurious harmonics, and degraded SFDR. To mitigate risks, use controlled-impedance transmission lines (50 Ω), minimize parasitic capacitance on output paths, and place the AD9858BSVZ close to the output connector or following stage. Also ensure a clean, low-noise power supply with proper decoupling (e.g., 100 nF and 10 μF capacitors near each supply pin) to maintain signal purity under dynamic loads.
Can the AD9858BSVZ replace the AD9857 in an existing IF generation design, and what are the voltage
Yes, the AD9858BSVZ can replace the AD9857 in IF generation systems where higher clock speed (1 GHz vs. 600 MHz) and improved 10-bit resolution are beneficial. However, the AD9858BSVZ requires a tighter 3.14V–3.47V supply range compared to the AD9857’s 3.3V ±10%. If your design uses a standard 3.3V regulator with ±5% tolerance, verify it remains within 3.14V–3.47V under all load conditions. Additionally, the AD9858BSVZ’s higher fclk increases susceptibility to jitter, so update your clock distribution strategy and evaluate thermal performance due to potentially higher power dissipation.
How does operating the AD9858BSVZ at elevated temperatures (e.g., 85°C) affect phase noise and SFDR
Operating the AD9858BSVZ at its maximum junction temperature (85°C) can degrade phase noise and spurious-free dynamic range (SFDR) due to increased substrate noise and reduced DAC linearity. In outdoor communication systems with limited cooling, this may reduce signal clarity in dense modulation schemes (e.g., 16-QAM). To maintain performance, ensure adequate PCB thermal grounding via the exposed pad, use thermal vias under the EP, and avoid stacking heat-generating components nearby. Consider derating the output amplitude slightly to reduce internal heating and run worst-case simulations including temperature effects on clock jitter.
What are the critical PCB layout recommendations for ensuring stable power delivery to the AD9858BSV
In mixed-signal designs, the AD9858BSVZ demands careful power delivery to avoid coupling digital switching noise into sensitive analog outputs. Use separate analog (AVDD) and digital (DVDD) power planes with ferrite beads and individual low-ESR decoupling capacitors (100 nF ceramic + 10 μF tantalum) for each supply pin. Place decoupling capacitors as close as possible to the respective pins and connect the exposed pad to a solid ground plane using multiple vias. Avoid routing high-speed digital traces beneath the AD9858BSVZ, and ensure a continuous return path under high-speed output lines to minimize EMI.
How does the 32-bit tuning word resolution of the AD9858BSVZ impact frequency agility in pulse radar
The AD9858BSVZ’s 32-bit tuning word enables fine frequency resolution (~0.23 Hz at 1 GHz), making it ideal for pulse radar systems requiring precise Doppler shift generation or agile waveform hopping. Compared to the AD9854, which also has 32-bit resolution but a lower max clock (300 MHz), the AD9858BSVZ supports much higher output frequencies, enabling direct RF synthesis without upconversion. However, the AD9858BSVZ lacks integrated comparators for clock doubling, so if you need quadrature outputs or internal PLLs like the AD9854, additional external components or architecture changes may be required. Evaluate system-level trade-offs between integration and performance before substitution.
What are the key design-in risks when using the AD9858BSVZ in a high-speed direct digital synthesis
When designing with the AD9858BSVZ at high output frequencies near its 1 GHz fclk limit, signal integrity and PCB layout become critical. Poor impedance control, inadequate grounding, or long trace lengths can introduce jitter, spurious harmonics, and degraded SFDR. To mitigate risks, use controlled-impedance transmission lines (50 Ω), minimize parasitic capacitance on output paths, and place the AD9858BSVZ close to the output connector or following stage. Also ensure a clean, low-noise power supply with proper decoupling (e.g., 100 nF and 10 μF capacitors near each supply pin) to maintain signal purity under dynamic loads.
Can the AD9858BSVZ replace the AD9857 in an existing IF generation design, and what are the voltage
Yes, the AD9858BSVZ can replace the AD9857 in IF generation systems where higher clock speed (1 GHz vs. 600 MHz) and improved 10-bit resolution are beneficial. However, the AD9858BSVZ requires a tighter 3.14V–3.47V supply range compared to the AD9857’s 3.3V ±10%. If your design uses a standard 3.3V regulator with ±5% tolerance, verify it remains within 3.14V–3.47V under all load conditions. Additionally, the AD9858BSVZ’s higher fclk increases susceptibility to jitter, so update your clock distribution strategy and evaluate thermal performance due to potentially higher power dissipation.
How does operating the AD9858BSVZ at elevated temperatures (e.g., 85°C) affect phase noise and SFDR
Operating the AD9858BSVZ at its maximum junction temperature (85°C) can degrade phase noise and spurious-free dynamic range (SFDR) due to increased substrate noise and reduced DAC linearity. In outdoor communication systems with limited cooling, this may reduce signal clarity in dense modulation schemes (e.g., 16-QAM). To maintain performance, ensure adequate PCB thermal grounding via the exposed pad, use thermal vias under the EP, and avoid stacking heat-generating components nearby. Consider derating the output amplitude slightly to reduce internal heating and run worst-case simulations including temperature effects on clock jitter.
What are the critical PCB layout recommendations for ensuring stable power delivery to the AD9858BSV
In mixed-signal designs, the AD9858BSVZ demands careful power delivery to avoid coupling digital switching noise into sensitive analog outputs. Use separate analog (AVDD) and digital (DVDD) power planes with ferrite beads and individual low-ESR decoupling capacitors (100 nF ceramic + 10 μF tantalum) for each supply pin. Place decoupling capacitors as close as possible to the respective pins and connect the exposed pad to a solid ground plane using multiple vias. Avoid routing high-speed digital traces beneath the AD9858BSVZ, and ensure a continuous return path under high-speed output lines to minimize EMI.
How does the 32-bit tuning word resolution of the AD9858BSVZ impact frequency agility in pulse radar
The AD9858BSVZ’s 32-bit tuning word enables fine frequency resolution (~0.23 Hz at 1 GHz), making it ideal for pulse radar systems requiring precise Doppler shift generation or agile waveform hopping. Compared to the AD9854, which also has 32-bit resolution but a lower max clock (300 MHz), the AD9858BSVZ supports much higher output frequencies, enabling direct RF synthesis without upconversion. However, the AD9858BSVZ lacks integrated comparators for clock doubling, so if you need quadrature outputs or internal PLLs like the AD9854, additional external components or architecture changes may be required. Evaluate system-level trade-offs between integration and performance before substitution.
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Sep 15 2026
