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Analog Devices Inc. LTC8043FS8#TRPBF
- Part No.:
- LTC8043FS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC8043FS8#TRPBF.pdf
- Description:
- IC DAC 12BIT A-OUT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,943
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Product details
Overview
LTC8043FS8#TRPBF from Analog Devices (formerly Linear Technology) is a serial-input 12-bit multiplying DAC in SO-8 package, supporting 4-quadrant multiplication with ±0.5LSB INL over temperature, ±1LSB max gain error, and 0.25µs output settling time. It serves as a pin-compatible upgrade to DAC-8043 and MAX543 in programmable gain amplifiers and digitally controlled power supplies.
For engineers reviewing the LTC8043FS8#TRPBF datasheet, LTC8043FS8#TRPBF pinout, LTC8043FS8#TRPBF application, or LTC8043FS8#TRPBF equivalent, key selection criteria include guaranteed monotonicity, low 60–90pF output capacitance, 3-wire serial interface timing (tDS = 30ns), ±25nA leakage over –40°C to 85°C, and VREF tolerance up to ±25V.
Technical Context
The LTC8043FS8#TRPBF implements a 12-bit current-output multiplying DAC architecture with internal feedback resistor routing, enabling precise 2- and 4-quadrant operation via external op-amp configuration. Its 3-wire serial interface (CLK, SRI, LD) supports asynchronous load control and eliminates need for frame synchronization.
It features guaranteed monotonicity across –40°C to 85°C, ±0.5LSB DNL, and low sensitivity to output amplifier offset-critical for closed-loop gain control. The SO-8 package integrates all digital inputs (VIH = 2.4V, VIL = 0.8V) and analog terminals (VREF, RFB, IOUT) with absolute max ratings including ±25V on VREF/RFB and 7V on VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output steps for high-precision gain scaling |
| INL (over temp) | ±0.5LSB - ensures <0.012% full-scale linearity error in industrial environments |
| DNL (guaranteed monotonic) | ±0.5LSB - prevents code-to-code nonmonotonicity in closed-loop control |
| Gain Error | ±1LSB at 25°C - enables accurate unipolar/bipolar output calibration without per-unit trimming |
| Output Settling Time | 0.25µs to 0.01% - supports fast update rates in real-time power supply compensation |
| VREF Input Range | ±25V - allows direct interfacing with high-voltage reference sources or bipolar signal paths |
| Supply Voltage | 4.75V to 5.25V - compatible with standard 5V logic rails and noise-sensitive analog domains |
Pinout & Package
Package: 8-lead plastic SO (SO-8), surface-mount, 150°C max junction temperature, θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (LD) | Load Strobe Input | Active-low asynchronous latch control; loads shift register contents into DAC register on falling edge |
| 2 (SRI) | Serial Data Input | CMOS-compatible data input synchronized to CLK rising edge; LSB-first 12-bit serial word |
| 3 (CLK) | Clock Input | Positive-edge-triggered clock; tDS = 30ns setup required for reliable data capture |
| 4 (GND) | Analog/Digital Ground | Single ground pin shared by analog and digital sections; requires low-impedance PCB return path |
| 5 (IOUT) | Current Output | Unbuffered DAC current sink; connects to RFB and op-amp inverting input for voltage output |
| 6 (RFB) | Feedback Resistor Terminal | Internal 10kΩ resistor connection point; enables 2-/4-quadrant multiplication with external op-amp |
| 7 (VREF) | Reference Voltage Input | Bipolar ±25V capable terminal; defines full-scale current magnitude and polarity |
| 8 (VDD) | Positive Supply | 5V ±5% supply; powers internal logic and DAC core; IDD ≤ 500µA during active serial transfer |
Key Features
| Feature | Design Value |
|---|---|
| 4-Quadrant Multiplication | Supports bipolar VREF (±10V typical) and bidirectional IOUT for true sign-magnitude gain control in servo loops |
| Guaranteed Monotonicity | ±0.5LSB DNL over –40°C to 85°C ensures no missing codes in closed-loop feedback applications |
| Low Glitch Energy | 2nV·s - minimizes transient injection during code transitions, critical for precision filter tuning |
| Low Power Consumption | 100µA quiescent supply current - enables use in battery-backed or energy-constrained systems |
| Easy 3-Wire Serial Interface | No CS or frame sync needed; LD strobe decouples serial loading from DAC update timing |
Applications
| Programmable Gain Amplifier | Digitally Controlled Power Supply |
|---|---|
Use Scenario: Adjusting gain of instrumentation amplifier in automated test equipment using microcontroller-generated digital codes. IC Role / Device Role / Timing Role: Multiplying DAC sets transconductance of op-amp feedback network; 0.25µs settling enables >1MHz update rate. Use Value: Eliminates manual potentiometer calibration and supports remote gain reconfiguration via SPI-like 3-wire bus. | Use Scenario: Regulating output voltage of a DC-DC converter by adjusting reference voltage applied to error amplifier. IC Role / Device Role / Timing Role: LTC8043FS8#TRPBF acts as digitally programmable VREF source; ±25V VREF rating accommodates wide-range feedback dividers. Use Value: Enables dynamic output adjustment without hardware changes; ±0.5LSB INL maintains tight regulation accuracy across temperature. |
| Remote Microprocessor-Controlled System | Digitally Controlled Filter |
Use Scenario: Generating calibrated analog setpoints for PLC I/O modules located in electrically noisy industrial cabinets. IC Role / Device Role / Timing Role: Current-output DAC drives isolated op-amp; 3-wire interface reduces wiring count and EMI susceptibility. Use Value: Low 8pF digital input capacitance and 2.4V/0.8V logic thresholds ensure robust serial communication over long traces. | Use Scenario: Tuning cutoff frequency of active low-pass filter in communications receiver front-end. IC Role / Device Role / Timing Role: LTC8043FS8#TRPBF controls variable-gain stage preceding filter; THD = –108dB preserves signal integrity. Use Value: Low 17nV/√Hz output noise density and <1mVP-P multiplying feedthrough prevent distortion in sensitive RF paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiplying DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1451CS8#TRPBF | 12-bit serial VOUT DAC (not multiplying); integrated output buffer; no VREF pin | Fixed-gain, single-supply voltage-output only; unsuitable for 4-quadrant or high-VREF applications | Select when buffered voltage output suffices and external op-amp is undesirable |
| LTC7543CN8#PBF | 12-bit serial multiplying DAC in PDIP-8; same INL/DNL specs but higher θJA (130°C/W) and no SO-8 option | Same functional capability but through-hole only; less suitable for high-density SMT layouts | Select for legacy through-hole designs or where thermal dissipation margin exceeds SO-8 limits |
Compared with LTC1451CS8#TRPBF and LTC7543CN8#PBF, the LTC8043FS8#TRPBF uniquely combines SO-8 packaging, ±25V VREF tolerance, and guaranteed monotonicity in a 3-wire multiplying architecture-making it optimal for space-constrained, high-voltage, closed-loop gain control.
Availability
LTC8043FS8#TRPBF is available at Aetrix Electronics and suitable for programmable gain amplifiers, digitally controlled power supplies, and remote microprocessor-controlled systems requiring stable component supply and guaranteed industrial temperature performance.
Supply support for LTC8043FS8#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The LTC8043FS8#TRPBF belongs to ADI's precision DAC product line, engineered for industrial automation and test equipment where accuracy, monotonicity, and robust serial interface reliability are essential.
FAQ
What is the operating temperature range for the LTC8043FS8#TRPBF?
The LTC8043FS8#TRPBF is specified for operation from –40°C to +85°C, meeting extended industrial temperature requirements. All key specifications-including ±0.5LSB INL, ±0.5LSB DNL, and ±25nA output leakage-are guaranteed across this full range, making LTC8043FS8#TRPBF suitable for harsh environmental deployments in factory automation and outdoor instrumentation.
Does the LTC8043FS8#TRPBF require an external op-amp to generate a voltage output?
Yes, the LTC8043FS8#TRPBF is a current-output DAC and requires an external op-amp connected between IOUT and RFB to convert its output current to a voltage. This configuration enables both 2-quadrant (unipolar) and 4-quadrant (bipolar) operation depending on VREF polarity and op-amp topology-core functionality confirmed in LTC8043FS8#TRPBF's typical applications TA03 and TA04.
Is the LTC8043FS8#TRPBF pin-compatible with the DAC-8043?
Yes, the LTC8043FS8#TRPBF is explicitly designed as a superior pin-compatible replacement for the DAC-8043. Pin assignments, SO-8 footprint, and electrical interface (VREF, RFB, IOUT, CLK, SRI, LD, GND, VDD) match exactly. LTC8043FS8#TRPBF improves upon DAC-8043 with tighter INL/DNL, lower output capacitance, and enhanced temperature stability-no PCB redesign is needed.
What is the maximum allowable voltage on the VREF pin of the LTC8043FS8#TRPBF?
The absolute maximum rating for the VREF pin of the LTC8043FS8#TRPBF is ±25V, as stated in the Absolute Maximum Ratings table. This allows direct use with high-voltage references or bipolar signal sources. Operation within this limit ensures safe 4-quadrant multiplication; exceeding ±25V risks permanent damage to LTC8043FS8#TRPBF's internal circuitry.
How does the 3-wire serial interface of the LTC8043FS8#TRPBF differ from standard SPI?
The LTC8043FS8#TRPBF uses CLK, SRI, and LD signals-omitting chip select (CS) and MISO/MOSI framing. Data is loaded LSB-first on CLK rising edges; LD strobe then transfers the 12-bit word from shift register to DAC register asynchronously. This simplifies isolation and reduces pin count versus SPI, and is fully documented in LTC8043FS8#TRPBF's timing diagram TA01 and electrical characteristics table.
LTC8043FS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 1
- Settling Time:
- 1µs
- Output Type:
- Current - Unbuffered
- Differential Output:
- No
- Data Interface:
- SPI
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- INL/DNL (LSB):
- ±1 (Max), ±1 (Max)
- Architecture:
- R-2R
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC8043FS8#TRPBF FAQ
1.How can I place an order for LTC8043FS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC8043FS8#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC8043FS8#TRPBF reliable?
The price and inventory of LTC8043FS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC8043FS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC8043FS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC8043FS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC8043FS8#TRPBF?
LTC8043FS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC8043FS8#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC8043FS8#TRPBF?
For technical support, including LTC8043FS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC8043FS8#TRPBF requirements.
6.How does Aetrix verify that LTC8043FS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC8043FS8#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC8043FS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC8043FS8#TRPBF?
All LTC8043FS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC8043FS8#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC8043FS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC8043FS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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