LTC2644CMS-L8#PBF

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Analog Devices Inc./Maxim Integrated

DIGITAL TO ANALOG CONVERTERS - DAC DUAL 12-/10-/8-BIT PWM TO VOUT DACS WITH 10PPM/ C REFERENCE

LTC2644CMS-L8#PBF

Active

Analog Devices Inc./Maxim Integrated

DIGITAL TO ANALOG CONVERTERS - DAC DUAL 12-/10-/8-BIT PWM TO VOUT DACS WITH 10PPM/ C REFERENCE

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC2644 Series

The LTC2644 is a family of dual 12-, 10-, and 8-bit PWM-to-voltage output DACs with an integrated high accuracy, low drift, 10ppm/°C reference in a 12-lead MSOP package. It has rail-to-rail output buffers and is guaranteed monotonic.The LTC2644 measures the period and pulse width of the PWM input signals and updates the voltage output DACs after each corresponding PWM input rising edge. The DAC outputs update and settle to 12-bit accuracy within 8μs typically and are capable of sourcing and sinking up to 5mA (3V) or 10mA (5V), eliminating voltage ripple and replacing slow analog filters and buffer amplifiers.The LTC2644 has a full-scale output of 2.5V using the 10ppm/°C internal reference. It can operate with an external reference, which sets the full-scale output equal to the external reference voltage. Each DAC enters a pin-selectable idle state when the PWM input is held unchanged for more than 60ms. The part operates from a single 2.7V to 5.5V supply and supports PWM input voltages from 1.71V to 5.5V.ApplicationsDigital CalibrationTrimming and AdjustmentLevel SettingProcess Control and Industrial AutomationInstrumentationAutomotive

Technical Specifications

Parameters and characteristics for this part

Specification	LTC2644CMS-L8#PBF

Data Interface	PWM
Differential Output	No
DNL (LSB) Tolerance	0.5 LSB, 0.5 LSB
DNL (Max) (LSB)	0.5 LSB
INL (LSB) Tolerance	0.05 LSB
INL (Max) (LSB)	0.05 LSB
Mounting Type	Surface Mount
Number of Bits	8 bits
Number of D/A Converters	2 count
Operating Temperature (Max)	70 °C
Operating Temperature (Min)	0 °C
Output Type	Voltage - Buffered
Package Length	0.118 in
Package Name	12-TSSOP, 12-MSOP
Package Width	3 mm
Reference Type	External, Internal
Settling Time (Typical)	7 µs
Voltage - Supply, Analog (Max)	5.5 V
Voltage - Supply, Analog (Min)	2.7 V
Voltage - Supply, Digital (Max)	5.5 V
Voltage - Supply, Digital (Min)	2.7 V

LTC2644 Series

Part	Settling Time (Typical)	Package Name	INL (LSB) Tolerance	DNL (Max) (LSB)	DNL (LSB) Tolerance	INL (Max) (LSB)	Reference Type	Voltage - Supply, Analog (Min)	Voltage - Supply, Analog (Max)	Mounting Type	Output Type	Package Length	Package Width	Operating Temperature (Min)	Operating Temperature (Max)	Number of Bits	Data Interface	Number of D/A Converters	Differential Output	Voltage - Supply, Digital (Min)	Voltage - Supply, Digital (Max)
Analog Devices Inc./Maxim Integrated LTC2644IMS-L8#TRPBF	7 µs	12-MSOP 12-TSSOP	0.05 LSB	0.5 LSB	0.5 LSB 0.5 LSB	0.05 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	-40 °C	85 °C	8 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644IMS-L10#PBF	7.4 µs	12-MSOP 12-TSSOP	0.2 LSB	0.5 LSB 0.5 LSB	0.5 LSB 0.5 LSB	0.2 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	-40 °C	85 °C	10 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644IMS-L10#TRPBF	7.4 µs	12-MSOP 12-TSSOP	0.2 LSB	0.5 LSB 0.5 LSB	0.5 LSB 0.5 LSB	0.2 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	-40 °C	85 °C	10 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644CMS-L12#TRPBF	7.8 µs	12-MSOP 12-TSSOP	1 LSB	1 LSB	1 LSB	1 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	0 °C	70 °C	12 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644CMS-L8#PBF	7 µs	12-MSOP 12-TSSOP	0.05 LSB	0.5 LSB	0.5 LSB 0.5 LSB	0.05 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	0 °C	70 °C	8 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644HMS-L8#PBF	7 µs	12-MSOP 12-TSSOP	0.05 LSB	0.5 LSB	0.5 LSB 0.5 LSB	0.05 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	-40 °C	125 °C	8 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644HMS-L10#TRPBF	7.4 µs	12-MSOP 12-TSSOP	0.2 LSB	0.5 LSB 0.5 LSB	0.5 LSB 0.5 LSB	0.2 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	-40 °C	125 °C	10 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644HMS-L10#PBF	7.4 µs	12-MSOP 12-TSSOP	0.2 LSB	0.5 LSB 0.5 LSB	0.5 LSB 0.5 LSB	0.2 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	-40 °C	125 °C	10 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644CMS-L12#PBF	7.8 µs	12-MSOP 12-TSSOP	1 LSB	1 LSB	1 LSB	1 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	0 °C	70 °C	12 bits	PWM	2 count	No	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC2644CMS-L10#PBF	7.4 µs	12-MSOP 12-TSSOP	0.2 LSB	0.5 LSB 0.5 LSB	0.5 LSB 0.5 LSB	0.2 LSB	External Internal	2.7 V	5.5 V	Surface Mount	Voltage - Buffered	0.118 in	3 mm	0 °C	70 °C	10 bits	PWM	2 count	No	2.7 V	5.5 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC2644CMS-L8#PBF | Datasheet

LTC2644: Dual 12-/10-/8-Bit PWM to VOUT DACs with 10ppm/°C Reference Data Sheet (Rev.B)

R461 Reliability Data