{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC2644HMS-L12#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC2644HMS-L12PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC2644HMS-L12PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC2644HMS-L12%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC2644HMS-L12#PBF, dual 12-bit voltage-output DAC, PWM data interface, 7.8µs typ settling, ±1 LSB INL/DNL, 2.7V to 5.5V supply, -40°C to 125°C, 12-MSOP package, Tube.","salesMarkdown":"## Dual 12-bit PWM DAC with extended temperature range It integrates two DAC channels in a 12-MSOP package, each with its own PWM demodulator and output buffer, so a single PWM signal per channel generates a clean analog voltage without an external filter. The data interface is PWM, not SPI or I2C. That is the defining difference versus most precision DACs: you feed a variable-duty-cycle digital signal on each channel's PWM input, and the internal demodulator converts it to a DC voltage. The settling time to 0.5 LSB is 7.8 µs typ, which sets the minimum PWM period you can use. If your PWM carrier runs at, say, 1 kHz (1 ms period), the DAC settles well within one cycle. At higher PWM frequencies — 100 kHz gives a 10 µs period — the 7.8 µs settling consumes most of the period, so the output may not fully settle before the next update. For closed-loop applications, budget the settling time against your PWM update rate. ## Accuracy budget: ±1 LSB INL and DNL Integral and differential nonlinearity are both specified at ±1 LSB maximum at 12 bits. That means every code is guaranteed monotonic, and the worst-case deviation from an ideal transfer function is one LSB — about 0.024% of full scale at 5 V reference. No calibration is needed for most 12-bit systems; if your error budget allocates ±0.1% for the DAC, this part fits without trimming. The reference can be external or internal, so you can match the full-scale range to the ADC reference or sensor output span. ## Package and supply: 12-MSOP footprint, single-supply operation Housed in a 12-MSOP (3.00 mm × 3.00 mm body, 0.65 mm pitch), this DAC fits on dense mixed-signal boards where every mm² counts. The output is rail-to-rail buffered, swinging from near ground to within a few millivolts of the positive rail. Surface-mount assembly is standard; no exposed pad to route. ## Lifecycle and sourcing For volume commitments or scheduled deliveries, a procurement inquiry will establish lead time and price breaks.","metaTitle":"LTC2644HMS-L12#PBF Dual 12-Bit PWM DAC, 7.8µs","metaDescription":"LTC2644HMS-L12#PBF dual 12-bit DAC with PWM input, buffered voltage output, ±1 LSB INL/DNL, 7.8µs settling, -40°C to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tube","Output Type":"Voltage - Buffered","INL/DNL (LSB)":"±1, ±1 (Max)","Mounting Type":"Surface Mount","Settling Time":"7.8µs (Typ)","Data Interface":"PWM","Number of Bits":"12","Package / Case":"12-TSSOP (0.118\\\", 3.00mm Width)","Reference Type":"External, Internal","lifecycle_stage":"eol_hot","Differential Output":"No","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"12-MSOP","Number of D/A Converters":"2","Voltage - Supply, Analog":"2.7V ~ 5.5V","Voltage - Supply, Digital":"2.7V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.94000","currency":"USD"},{"qty":10,"price":"$8.07800","currency":"USD"},{"qty":25,"price":"$7.70240","currency":"USD"},{"qty":100,"price":"$6.68780","currency":"USD"},{"qty":250,"price":"$6.38724","currency":"USD"},{"qty":500,"price":"$5.82366","currency":"USD"},{"qty":1000,"price":"$5.07222","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a7d731259a75bc42445d36c8d2e16a33.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does LTC2644HMS-L12#PBF have a SPI or PWM interface?","answer":"The data interface is PWM, not SPI. Each of the two DAC channels accepts a separate PWM input, and the internal demodulator converts the duty cycle to a buffered analog voltage."},{"question":"What is the output type of the LTC2644?","answer":"The output is Voltage - Buffered, meaning each DAC channel has an internal rail-to-rail output buffer that can drive loads directly without an external op-amp."},{"question":"What are the equivalent replacement parts for LTC2644HMS-L12#PBF?","answer":"The AD5689RBRUZ and AD5689RARUZ are 16-bit dual DACs from the same nanoDAC+ family with SPI interface, but they are not pin-compatible (different package and interface). The AD7249ARZ is a 12-bit dual DAC with SPI interface in a wider SOIC package. None of these are drop-in replacements — the LTC2644's PWM input is unique. For a functional equivalent with the same PWM interface, stay within the LTC2644 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC2644HMS-L12PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC2644HMS-L12PBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}