LTC2644IMS-L12#PBF Linear Technology Integrated Circuit (Small Outline Packages) In Stock
Linear Technology LTC2644IMS-L12#PBF is a dual-channel 12-bit DAC with serial SPI input, 6.25 kSPS update rate, and up to 5.5 V analog output voltage range in a compact MSOP-12 package. Features 0.061% maximum linearity error for precision voltage generation applications. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Linear Technology
- Package
- Small Outline Packages
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- LTC2644IMS-L12#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0000(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel 12-bit resolution DAC with 0.061% maximum linearity error enables precise analog voltage generation for calibration and control loops
- Serial SPI input interface with 6.25 kSPS update rate supports simple 3-wire connection to microcontrollers and FPGAs at low pin count
- Up to 5.5 V analog output voltage range accommodates 3.3 V and 5 V system rails without external level shifting
- Compact MSOP-12 package (3 mm × 3 mm footprint) minimizes board area in space-constrained precision analog designs
Applications
The LTC2644IMS-L12#PBF is used in precision analog control systems, industrial process controllers, and instrumentation equipment requiring 12-bit dual-channel voltage output with serial SPI communication. Its 0.061% linearity error and up to 5.5 V output range make it suitable for driving analog actuators, programmable reference voltages, and calibration circuits in data-acquisition front ends. Engineers also deploy this DAC in closed-loop servo and PID control applications where two independently settable output channels from a single MSOP-12 chip reduce component count and board space.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1668 |
| YTEOL | 10 |
| Analog Output Voltage-Max | 5.5V |
| Converter Type | D/A CONVERTER |
| Input Bit Code | BINARY |
| Input Format | SERIAL |
| JESD-30 Code | R-PDSO-G12 |
| JESD-609 Code | e3 |
| Linearity Error-Max (EL) | 0.061% |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP12,.19 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Settling Time-Nom (tstl) | 7.8 µs |
| Supply Current-Max | 6mA |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resolution and update rate does the LTC2644IMS-L12#PBF DAC provide, and how does this affect analog output precision?
The LTC2644IMS-L12#PBF is a 12-bit DAC with a 6.25 kSPS maximum update rate. At 12-bit resolution on a 5 V output range, the minimum voltage step size is approximately 1.22 mV per LSB — sufficient for precision analog control applications such as programmable voltage references, calibration sources, and servo amplifier inputs where sub-2 mV resolution is required.
How does the SPI serial interface of LTC2644IMS-L12#PBF simplify integration with common microcontrollers?
The LTC2644IMS-L12#PBF uses a 3-wire SPI serial input (SCK, SDI, CS) operating at standard logic levels compatible with 3.3 V and 5 V microcontrollers. A single SPI bus can address both DAC channels using the chip select pin, requiring only 3 MCU GPIO pins to control two independent 12-bit analog outputs. This minimizes pin count overhead compared to parallel-bus DACs in embedded control systems with limited I/O resources.
For a precision calibration instrument, what linearity performance does the LTC2644IMS-L12#PBF guarantee?
Linear Technology specifies a maximum integral nonlinearity (INL) error of 0.061% for the LTC2644IMS-L12#PBF, equivalent to approximately 2.5 LSB at 12-bit resolution. For calibration instruments targeting 0.1% accuracy class, this linearity budget leaves margin for gain and offset errors after trimming. The dual-channel 12-bit output is accurate enough for voltage source calibration in benchtop equipment operating on 5 V supply rails.
When would an engineer choose the LTC2644IMS-L12#PBF over a 16-bit single-channel DAC in a two-channel PID control application?
In a two-channel PID control system where 12-bit resolution (approximately 1.22 mV per LSB on a 5 V range) is sufficient for the actuator, the LTC2644IMS-L12#PBF integrates both DAC channels in a single MSOP-12 package. This halves the IC count compared to two separate 16-bit DACs, reduces BOM cost, and shrinks the PCB footprint from approximately 10 mm × 6 mm (two separate SO-8 packages) down to the 3 mm × 3 mm MSOP-12 footprint — a decisive advantage in space-constrained servo controller boards.
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| 1+ | $4.5685 | $4.57 |
| 1000+ | $4.0000 | $4000.00 |
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