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DAC128S085CIMT
Texas Instruments
IC DAC 12BIT V-OUT 16TSSOP
16335 Pcs New Original In Stock
12 Bit Digital to Analog Converter 8 16-TSSOP
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5.0 / 5.0
- (423 Ratings)
DAC128S085CIMT
Product Overview
1408166
DiGi Electronics Part Number
DAC128S085CIMT-DGManufacturer
Texas Instruments
DAC128S085CIMT
Description
IC DAC 12BIT V-OUT 16TSSOPInventory
16335 Pcs New Original In Stock
12 Bit Digital to Analog Converter 8 16-TSSOP
Quantity
Minimum 1
Minimum 1
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DAC128S085CIMT Technical Specifications
Category
Data Acquisition, Digital to Analog Converters (DAC)
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Number of Bits
12
Number of D/A Converters
8
Settling Time
8.5µs
Output Type
Voltage - Buffered
Differential Output
No
Data Interface
SPI, DSP
Reference Type
External
Voltage - Supply, Analog
2.7V ~ 5.5V
Voltage - Supply, Digital
2.7V ~ 5.5V
INL/DNL (LSB)
±2, +0.15/-0.09
Architecture
String DAC
Operating Temperature
-40°C ~ 125°C
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
16-TSSOP
Mounting Type
Surface Mount
Base Product Number
DAC128S085
Datasheet & Documents
HTML Datasheet
DAC128S085CIMT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Standard Package
92
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
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SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
배송과 포장에서 디지의 세심함이 느껴졌어요. 매우 만족스럽습니다.
de desembre 02, 2025
I love how they combine vast product options with transparent pricing.
de desembre 02, 2025
Their online platform makes accessing support documentation straightforward and efficient.
de desembre 02, 2025
This shopping experience was excellent; the packaging was secure and the product durable.
de desembre 02, 2025
The support team consistently follows up to ensure customer satisfaction after purchase.
de desembre 02, 2025
Fast, efficient delivery paired with excellent customer support.
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Frequently Asked Questions (FAQ)
Can the DAC128S085CIMT be safely used as a drop-in replacement for the older DAC128S085CIMTX in a 5V industrial control system, and what design risks should I evaluate before making the switch?
While the DAC128S085CIMT and DAC128S085CIMTX are functionally identical and share the same pinout, footprint, and electrical characteristics, the 'X' suffix typically denotes a different reel/tube packaging or distributor-specific variant. Before substituting, verify that your PCB layout accommodates the exact 16-TSSOP dimensions (0.173" width) and that your solder paste stencil and reflow profile are compatible. Since both parts are now obsolete, ensure long-term availability through authorized channels. Also confirm that your SPI timing margins still meet requirements under worst-case 5V supply and -40°C to 125°C operating conditions, especially if your system lacks robust clock synchronization. There is minimal electrical risk, but supply chain traceability and assembly process validation are critical due to obsolescence.
What are the key reliability concerns when using the DAC128S085CIMT in a high-vibration automotive environment near its -40°C to 125°C operating limit, and how can I mitigate them?
The DAC128S085CIMT is rated for -40°C to 125°C, making it suitable for under-hood automotive applications, but sustained operation near thermal extremes can accelerate electromigration and solder joint fatigue—especially under vibration. Since it's housed in a 16-TSSOP package with low mechanical robustness, implement underfill or conformal coating to reduce stress on solder joints. Ensure your PCB uses high-Tg FR4 or polyimide substrates with proper thermal vias under the package to improve heat dissipation. Additionally, validate long-term drift of the INL (±2 LSB) over temperature cycles, as string DAC architectures like this one can exhibit non-monotonic behavior under thermal stress. Perform HALT testing if mission-critical, and consider derating the supply voltage to 5.0V max even if 5.5V is allowed, to reduce internal power dissipation and junction temperature rise.
How does the DAC128S085CIMT compare to the newer DAC128S085CIMT/NOPB in terms of long-term availability and design continuity, and should I redesign around a modern alternative like the DAC8568?
The DAC128S085CIMT/NOPB is the RoHS-compliant, lead-free version of the same device and is electrically and mechanically identical to the DAC128S085CIMT, so it can serve as a direct replacement with no design changes. However, both are now obsolete, meaning Texas Instruments no longer manufactures them, and future supply depends on distributor inventory. For new designs, migrating to a modern alternative like the DAC8568 (also from TI) is advisable—it offers 16-bit resolution, internal reference, and similar SPI interface but in a smaller package. The trade-off is higher cost and potential firmware changes due to command structure differences. If redesigning isn’t feasible, secure a lifetime buy of DAC128S085CIMT/NOPB units and validate counterfeit screening procedures, as obsolete parts are prone to gray-market risks.
What external reference voltage stability and noise requirements must I meet when using the DAC128S085CIMT in a precision sensor calibration application, and how does its string architecture impact performance?
Since the DAC128S085CIMT uses an external reference, the accuracy and stability of your VREF directly determine output precision. For 12-bit performance (±2 LSB INL), your reference must have less than ±0.05% initial accuracy and low temperature drift (<10 ppm/°C). Additionally, high-frequency noise on VREF will directly modulate the DAC output due to the buffered voltage output stage—use a low-noise LDO (e.g., TPS7A47) followed by a 10µF ceramic + 100nF decoupling network within 5mm of the REF pin. The string DAC architecture inherently has good monotonicity but limited dynamic performance; with 8.5µs settling time, it’s unsuitable for fast waveform generation. For calibration systems, ensure your MCU’s SPI clock is clean and synchronized to avoid glitches during code transitions, especially when updating multiple channels sequentially.
Can I daisy-chain multiple DAC128S085CIMT devices on a single SPI bus in a multi-channel data acquisition system, and what layout and timing pitfalls should I avoid?
Yes, you can daisy-chain multiple DAC128S085CIMT devices using the SPI interface, as it supports standard 16-bit frame formatting with SDO output for cascading. However, each added device increases propagation delay and reduces maximum SCLK frequency—keep total trace length under 15 cm and use series termination resistors (22–33Ω) near the MCU to dampen reflections. Avoid routing SPI lines parallel to high-current or switching signals to prevent crosstalk-induced data errors. Since all channels share the same reference and power rails, ensure star grounding and separate analog/digital grounds with a single-point connection near the DACs. Also, account for the 8.5µs settling time per channel when sequencing updates; simultaneous updates require latching all data via the SYNC line, but glitches may occur if SYNC is asserted too early. Use a dedicated GPIO to control SYNC with precise timing validated on an oscilloscope.
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.
DAC128S085CIMT CAD Models
Texas Instruments DAC128S085CIMT PCB symbols & footprints
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