Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
DAC7634E
Texas Instruments
IC DAC 16BIT V-OUT 48SSOP
6309 Pcs New Original In Stock
16 Bit Digital to Analog Converter 4 48-SSOP
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (505 Ratings)
DAC7634E
Product Overview
1444870
DiGi Electronics Part Number
DAC7634E-DGManufacturer
Texas Instruments
DAC7634E
Description
IC DAC 16BIT V-OUT 48SSOPInventory
6309 Pcs New Original In Stock
16 Bit Digital to Analog Converter 4 48-SSOP
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
DAC7634E Technical Specifications
Category
Data Acquisition, Digital to Analog Converters (DAC)
Packaging
Tube
Series
-
Product Status
Active
DiGi-Electronics Programmable
Not Verified
Number of Bits
16
Number of D/A Converters
4
Settling Time
10µs
Output Type
Voltage - Buffered
Differential Output
No
Data Interface
SPI
Reference Type
External
Voltage - Supply, Analog
±5V
Voltage - Supply, Digital
5V
INL/DNL (LSB)
±3, ±2
Architecture
R-2R
Operating Temperature
-40°C ~ 85°C
Package / Case
48-BSSOP (0.295", 7.50mm Width)
Supplier Device Package
48-SSOP
Mounting Type
Surface Mount
Base Product Number
DAC7634
Datasheet & Documents
Manufacturer Product Page
DAC7634E Specifications
HTML Datasheet
DAC7634E-DG
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
-DAC7634EG4
DAC7634E-NDR
-DAC7634E-DG
-DAC7634E-NDR
TEXTISDAC7634E
2156-DAC7634E
-DAC7634EG4-NDR
Standard Package
25
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
售後服務貼心又專業，解答疑問非常耐心，令人感到非常放心。
de desembre 02, 2025
I love how effortless it is to browse and purchase on DiGi Electronics.
de desembre 02, 2025
Their products exhibit consistent performance, and their support staff is always ready to assist with any questions.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design risks when integrating the DAC7634E into a precision analog signal chain with tight settling time requirements?
When integrating the DAC7634E in precision applications, a key risk is ensuring the 10µs settling time is achieved under actual load conditions. The buffered voltage output can drive moderate capacitive loads, but exceeding ~100pF may degrade performance. To mitigate, use a short PCB trace with controlled impedance and consider adding a small series resistor (10–20Ω) near the output to isolate capacitive loading. Also verify that the external reference stability and noise floor are below the DAC’s 16-bit resolution threshold (e.g., <30µV RMS) to avoid undermining accuracy despite the ±3LSB INL.
Can the DAC7634E replace the AD5664R in a quad-channel 16-bit voltage-output DAC application, and what are the critical interface differences?
The DAC7634E can serve as a functional alternative to the AD5664R in 16-bit quad DAC applications, but key differences affect design-in. Unlike the AD5664R, the DAC7634E requires an external reference, increasing component count but allowing optimization of reference voltage and noise. It uses SPI with no built-in reference, whereas the AD5664R integrates a 2.5V reference. Ensure your microcontroller supports the DAC7634E’s SPI mode (CPOL/CPHA) and that digital logic levels are compatible with its 5V digital supply. Also, review power sequencing—DAC7634E requires analog ±5V supplies, which may complicate single-supply systems designed for AD5664R.
How does the external reference requirement of the DAC7634E impact system noise and accuracy in industrial temperature environments?
The DAC7634E's external reference requirement gives flexibility but shifts noise and drift management to the system designer. In industrial (-40°C to 85°C) applications, select a low-drift (<10ppm/°C), low-noise (<8µV RMS) reference like the REF5025 or LM4140 to maintain 16-bit monotonicity. Poor reference stability can dominate total error—e.g., a 0.1% initial inaccuracy equates to ~65 LSB error. Use proper PCB layout: keep reference traces short, bypass with high-quality ceramics, and shield from digital noise sources. This avoids degrading the DAC’s inherent ±3LSB INL spec in real-world conditions.
What are the power supply sequencing constraints for the DAC7634E to prevent latch-up or output glitches during startup?
The DAC7634E requires careful power sequencing to avoid latch-up or transient outputs. TI recommends applying the analog supplies (±5V) before the digital supply (5V). If this isn't feasible, use supply sequencers like the TPS389 or discrete RC delays to ensure analog rails stabilize first. Rapid or unbalanced ramp rates (>0.5V/ms) can cause internal node inversion, leading to glitches or latch-up in the R-2R ladder. Include soft-start circuitry or sequenced regulators, and always tie the /SYNC pin to a known state via pull-up to prevent spurious SPI activation during power-up.
Is the DAC7634E suitable for replacing aging DAC8830 parts in legacy systems, and what layout changes are needed?
The DAC7634E can replace the DAC8830 in systems needing 16-bit resolution and quad outputs, but several integration challenges exist. The DAC8830 uses a serial interface with different timing and control signals; ensure SPI clock rates on your microcontroller are compatible with DAC7634E’s max speed (recommended <10MHz). The 48-SSOP footprint differs, requiring PCB redesign—account for the larger 7.5mm width and adjust thermal relief pads for manufacturability. Also, the DAC7634E lacks programmable gain, so if the DAC8830 used internal gain, add external amplification. Finally, confirm MSL3 compliance in your assembly process with 168-hour floor life tracking to prevent moisture-related failures.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
DAC7634E CAD Models
Texas Instruments DAC7634E PCB symbols & footprints
productDetail
