ltc2635-lz8 Linear Technology Corporation, ltc2635-lz8 Datasheet
ltc2635-lz8
Related parts for ltc2635-lz8
ltc2635-lz8 Summary of contents
Page 1
... It has rail-to-rail output buffers and is guaran- teed monotonic. The LTC2635-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2635-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. Each DAC can also operate with an external reference, which sets the full- scale output to the external reference voltage ...
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... Supply Voltage (V ) ................................... –0. SCL, SDA, REFLO, LDAC .............................. –0. CA0, CA1, CA2 ...... –0.3V to Min (V OUTA-D REF .................................... –0.3V to Min (V Operating Temperature Range LTC2635C ................................................ 0°C to 70°C LTC2635H (Note 3) ............................ –40°C to 125°C PIN CONFIGURATION TOP VIEW OUTA ...
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... MO = Reset to Mid-Scale in Internal Reference Mode, DAC Outputs Hi-Z (LMO Only Reset to Zero-Scale in Internal Reference Mode FULL-SCALE VOLTAGE, INTERNAL REFERENCE MODE 4.096V PACKAGE TYPE UD = 16-Pin QFN MSE = 10-Lead MSOP TEMPERATURE GRADE C = Commercial Temperature Range (0°C to 70° Automotive Temperature Range (–40°C to 125°C) PRODUCT PART NUMBER LTC2635 2635fa 3 ...
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... LTFBG LTC2635-LMI8 LDZR LTFBP LTC2635-LMX12 LDYZ LTDZX LTC2635-LMX10 LDZH LTFBF LTC2635-LMX8 LDZQ LTFBN LTC2635-LZ12 LDYY LTDZW LTC2635-LZ10 LDZG LTFBD LTC2635-LZ8 LDZP LTFBM LTC2635-LMO12** LFBT LTFBX LTC2635-LMO10** LFBV LTFBY LTC2635-LMO8** LFBW LTFBZ LTC2635-HMI12 LDZF LTFBC 4.096V • (4095/4096) LTC2635-HMI10 LDZN LTFBK 4.096V • (1023/1024) ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LTC2635-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8/-LMO12/-LMO10/-LM08 (V SYMBOL PARAMETER CONDITIONS DC Performance Resolution Monotonicity V = 3V, Internal Ref. (Note 4) CC DNL Differential Nonlinearity V = 3V, Internal Ref. (Note 4) CC ...
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... LTC2635 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LTC2635-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8/-LMO12/-LMO10/-LM08 (V SYMBOL PARAMETER Reference Input Input Voltage Range Resistance Capacitance I Reference Current, Power-Down Mode REF Reference Output Output Voltage ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LTC2635-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8/-LMO12/-LMO10/-LM08 (V SYMBOL PARAMETER AC Performance t Settling Time S Voltage Output Slew Rate Capacitive Load Driving Glitch Impulse DAC-to-DAC Crosstalk Multiplying Bandwidth ...
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... LTC2635 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LTC2635-HMI12/-HMI10/-HMI8/-HZ12/-HZ10/-HZ8 (V SYMBOL PARAMETER CONDITIONS DC Performance Resolution Monotonicity V = 5V, Internal Ref. (Note 4) CC DNL Differential Nonlinearity V = 5V, Internal Ref. (Note 4) CC INL Integral Nonlinearity V = 5V, Internal Ref. (Note 4) ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T LTC2635-HMI12/-HMI10/-HMI8/-HZ12/-HZ10/-HZ8 (V SYMBOL PARAMETER Reference Input Input Voltage Range Resistance Capacitance I Reference Current, Power-Down Mode REF Reference Output Output Voltage Reference Temperature Coefficient Output Impedance Capacitive Load Driving ...
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... Glitch Impulse DAC-to-DAC Crosstalk Multiplying Bandwidth e Output Voltage Noise Density n Output Voltage Noise TIMING CHARACTERISTICS temperature range, otherwise specifi cations are at T LTC2635-HMI12/-HMI10/-HMI8/-HZ12/-HZ10/-HZ8 (V SYMBOL PARAMETER f SCL Clock Frequency SCL t Hold Time (Repeated) Start Condition HD(STA) ...
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... For 12 and linearity is defined from code 16 to code 4,095. L Note 5. Inferred from measurement at code 16 (LTC2635-12), code 4 (LTC2635-10) or code 1 (LTC2635-8), and at full-scale. Note 6. This IC includes current limiting that is intended to protect the device during momentary overload conditions. Junction temperature can exceed the rated maximum during current limiting ...
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... LTC2635 TYPICAL PERFORMANCE CHARACTERISTICS LTC2635-L12 (Internal Reference 2.5V) FS Integral Nonlinearity (INL) 1 0.5 0 –0.5 –1.0 0 1024 2048 CODE INL vs Temperature 1 0.5 INL (POS) 0 –0.5 INL (NEG) –1.0 –50 – 100 125 TEMPERATURE (°C) 2635 G03 Settling to ±1 LSB Rising ...
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... TYPICAL PERFORMANCE CHARACTERISTICS LTC2635-H12 (Internal Reference Integral Nonlinearity (INL) 1 0.5 0 –0.5 –1.0 0 1024 2048 CODE INL vs Temperature 1 INL (POS) 0.5 0 INL (NEG) –0.5 –1.0 –50 – 100 125 TEMPERATURE (°C) 2635 G10 Settling to ±1 LSB Rising 9th CLOCK OF 3rd ...
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... Integral Nonlinearity (INL) 0. 2.5V FS INTERNAL REF 0.25 0 –0.25 –0. 128 CODE LTC2635 Load Regulation (LTC2635- (LTC2635- (LTC2635- –2 –4 –6 INTERNAL REF. –8 CODE = MID-SCALE –10 –30 –20 – (mA) OUT 2635 G19 14 1.0 0.5 0 –0.5 – ...
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... Large-Signal Response V OUT 0.5V/DIV 1/4 SCALE to 3/4 SCALE 2μs/DIV 2635 G22 Headroom at Rails vs Output Current 5.0 5V SOURCING 4.5 4.0 3.5 3V (LTC2635-L) SOURCING 3.0 2.5 2.0 1.5 5V SINKING 1.0 3V (LTC2635-L) SINKING 0 (mA) OUT 2635 G25 Supply Current vs Logic Voltage 1.6 SWEEP SDA, SCL BETWEEN 1.4 0V AND V CC 1.2 1.0 ...
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... FREQUENCY (Hz) DAC-to-DAC Crosstalk (Dynamic) 9th CLOCK OF 3rd SCL DATA BYTE 5V/DIV 1 DAC SWITCH 0-FS 2V/DIV V OUT 2mV/DIV LTC2635-H12 3nV • s TYPICAL C 2μs/DIV T = 25°C, unless otherwise noted. A Gain Error vs Reference Input 1 5.5V CC 0.8 GAIN ERROR OF 4 CHANNELS ...
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... When External Reference mode is selected, REF is an input (1V ≤ V the full-scale DAC output voltage. When Internal Reference is selected, the 10ppm/°C 1.25V (LTC2635-L) or 2.048V (LTC2635-H) internal reference (half full-scale) is available at the pin. This output may be bypassed to GND with up to 10μF, and must be buffered when driving an external DC load current ...
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... LTC2635 BLOCK DIAGRAM GND (REFLO) V OUTA DAC A V REF V OUTB DAC B (LDAC) CA0 I (CA1) ADDRESS DECODE (CA2 QFN PACKAGE ONLY 18 INTERNAL REFERENCE DECODE INTERFACE REF SWITCH V REF OUTD DAC D V REF V OUTC DAC C POWER-ON RESET SCL SDA 2635 BD ...
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... C Digital I/O (See Electrical Characteristics) R INH 2635 TC01 t SU(DAT HD(STA SU(STA HIGH HD(DAT) AND V LEVELS IH(MIN) IL(MAX) 2 Figure Timing LTC2635 Test Circuit INL INF CAn 2635 TC02 GND t BUF SU(STO 2635 F01 2635fa 19 ...
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... Figure 2a. Typical LTC2635 Write Transaction 9TH CLOCK OF 3RD DATA BYTE SCL t 1 LDAC 2635 F02b Figure 2b. LTC2635 LDAC Timing (QFN Package Only) 3RD DATA BYTE ACK ACK ...
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... OPERATION The LTC2635 is a family of quad voltage output DACs in 16-pin QFN and 10-lead MSOP packages. Each DAC can operate rail-to-rail using an external reference, or with its full-scale voltage set by an integrated reference. Eighteen combinations of accuracy (12-, 10-, and 8-bit), power-on reset value (zero-scale, mid-scale in internal reference mode, or mid-scale in external reference mode), DAC power-down output load (high impedance or 200kΩ ...
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... The slave address assignments are shown in Tables 1 and 2. In addition to the address selected by the address pins, the part also responds to a global address. This address allows a common write to all LTC2635 parts to be ac- complished using one 3-byte write transaction on the bus ...
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... The master initiates communication with the LTC2635 with a START condition and a 7-bit slave address followed by the Write bit ( The LTC2635 acknowledges by pulling the SDA pin low at the 9th clock if the 7-bit slave address matches the address of the part (set by CA0, CA1 or CA2) or the global address ...
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... The LTC2635-LMO options power-up with all DAC outputs in this high-impedance state. They remain that way until given a software or hardware update command. For all LTC2635 options, input- and DAC-register contents are not disturbed during power-down ...
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... The resistance from the LTC2635 GND pin to the ground plane should be as low as possible. Resistance here will add directly to the effective DC output impedance of the device (typically 0.1Ω ...
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... Figure 4. Typical LTC2635 Input Waveform—Programming DAC Output for Full-Scale 26 analog ground, digital ground, and power ground. When the LTC2635 is sinking large currents, this current fl ows out the ground pin and directly to the power ground trace without affecting the analog ground plane voltage. ...
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... Figure 5. Effects of Rail-to-Rail On a DAC Transfer Curve (Shown for 12 Bits). (a) Overall Transfer Function (b) Effect of Negative Offset for Codes Near Zero (c) Effect of Positive Full-Scale Error for Codes Near Full-Scale REF CC OUTPUT VOLTAGE 0V 0 2,048 4,095 INPUT CODE (a) LTC2635 POSITIVE FSE REF CC OUTPUT VOLTAGE INPUT CODE 2635 F05 (c) 2635fa 27 ...
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... LTC2635 APPLICATION INFORMATION Voltage Margining Application with LTC3850 (1.2V ±5%) –LTC2635– LMO Option Only 1nF 100pF 10k DAC D V OUTPUT DAC CODE OUT 1.26V 0.5V 819 1.2V 0.8V 1311 1.14V 1.1V 1802 28 0.1μF 2.2Ω 100k 0.1μF PGOOD INTV TG1 LIM 10k BOOST1 FREQ ...
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... ON THE TOP AND BOTTOM OF PACKAGE UD Package 16-Lead Plastic QFN (3mm × 3mm) (Reference LTC DWG # 05-08-1691) 0.70 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC BOTTOM VIEW—EXPOSED PAD R = 0.115 0.75 0.05 TYP 1.45 0.10 (4-SIDES) 0.200 REF 0.00 – 0.05 LTC2635 PIN 1 NOTCH R = 0.20 TYP OR 0.25 45 CHAMFER 15 16 0.40 0. (UD16) QFN 0904 0.25 0.05 0.50 BSC 2635fa 29 ...
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... LTC2635 PACKAGE DESCRIPTION 2.794 0.102 (.110 .004) 5.23 (.206) MIN 0.305 0.038 (.0120 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT DETAIL “A” 0.254 (.010) GAUGE PLANE DETAIL “A” 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. ...
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... Minor Text Edit in Operations Section Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC2635 PAGE NUMBER 2, 17 21, 24 ...
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... LTC2635 RELATED PARTS PART NUMBER DESCRIPTION LTC1660/LTC1665 Octal 10-/8-Bit V DACs in 16-Pin OUT Narrow SSOP LTC1664 Quad 10-Bit V DAC in 16-Pin Narrow OUT SSOP LTC1821 Parallel 16-Bit Voltage Output DAC LTC2600/LTC2610/ Octal 16-/14-/12-Bit V OUT LTC2620 16-Lead Narrow SSOP LTC2601/LTC2611/ Single 16-/14-/12-Bit V OUT LTC2621 ...