Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Channels / Resolution | 8 channels, 12-bit |
| Output | Buffered rail-to-rail voltage outputs |
| Reference | Two reference inputs, 0.5 V to VA |
| Supply | 2.7 V to 5.5 V |
| Serial Interface | 3-wire serial interface up to 40 MHz; daisy-chain capable |
| Update | Simultaneous output updating |
| Power | Individual channel power-down; reset to 0 V |
| Exact Package / Packing | TSSOP (PW), 16 pins; 2500-piece large reel; marking X78C |
Product Overview
DAC128S085CIMTX/NOPB is the 12-bit octal member of the same low-power multi-output architecture used by DAC088S085. It keeps dual references and simultaneous update while increasing code resolution from 256 to 4096 levels per channel.
The 40-MHz serial interface helps reload many channels quickly. That matters when eight outputs or a daisy-chained group must be refreshed without long control-loop latency, even though the analog outputs themselves settle on a microsecond timescale.
Twelve-bit resolution makes reference noise, buffer error and board grounding more relevant than on the 8-bit sibling. The exact CIMTX/NOPB code is the active TSSOP 2500-piece reel.
For related devices, see HKEQGOO’s DACs category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | DAC128S085CIMTX/NOPB |
| Channels / Resolution | 8 channels, 12-bit |
| Output | Buffered rail-to-rail voltage outputs |
| Reference | Two reference inputs, 0.5 V to VA |
| Supply | 2.7 V to 5.5 V |
| Serial Interface | 3-wire serial interface up to 40 MHz; daisy-chain capable |
| Update | Simultaneous output updating |
| Power | Individual channel power-down; reset to 0 V |
| Exact Package / Packing | TSSOP (PW), 16 pins; 2500-piece large reel; marking X78C |
| Manufacturer Status | Active / Production |
| Part Marking | X78C |
Functional Highlights
12-bit octal output density suits trim-heavy mixed-signal boards
Eight programmable references, offsets or bias voltages can be generated with far fewer packages than single-channel DACs.
Fast serial loading reduces update overhead across many channels
The host can shift a full multi-channel frame quickly and then use the update mechanism to commit the outputs together.
Design Considerations
- Use low-noise references whose error is small relative to a 12-bit LSB.
- Check output-buffer load and capacitive stability on every channel.
- Separate serial-edge return currents from reference/ground routing to avoid code-dependent glitches.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists DAC128S085CIMTX/NOPB as Active / Production; TSSOP (PW), 16 pins; 2500-piece large tape and reel; −40°C to +125°C; marking X78C.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
