LTC2619 Linear Technology Corporation, LTC2619 Datasheet

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LTC2619

Manufacturer Part Number
LTC2619
Description
Ltc2619 - Quad 14-bit Rail-to-rail Dacs With I2c Interface
Manufacturer
Linear Technology Corporation
Datasheet

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APPLICATIO S
FEATURES
BLOCK DIAGRA
Mobile Communications
Process Control and Industrial Automation
Automatic Test Equipment and Instrumentation
Smallest Pin-Compatible Quad DACs:
LTC2609: 16 Bits
LTC2619: 14 Bits
LTC2629: 12 Bits
Guaranteed Monotonic Over Temperature
Separate Reference Inputs
27 Selectable Addresses
400kHz I
Wide 2.7V to 5.5V Supply Range
Low Power Operation: 250µA per DAC at 3V
Individual Channel Power Down to 1µA (Max)
High Rail-to-Rail Output Drive (±15mA, Min)
Ultralow Crosstalk Between DACs (5µV)
LTC2609/LTC2619/LTC2629: Power-On Reset to
Zero Scale
LTC2609-1/LTC2619-1/LTC2629-1: Power-On Reset
to Midscale
Tiny 16-Lead Narrow SSOP Package
V
V
REFB
REFA
OUTA
OUTB
SDA
SCL
3
4
5
6
8
9
2
C
DAC A
DAC B
Interface
U
REFLO
W
2
32-BIT SHIFT REGISTER
INTERFACE
I
2
C
GND
1
CONTROL
LOGIC
V
16
CC
ADDRESS
DECODE
LOGIC
DAC D
DAC C
DESCRIPTIO
The LTC
12-bit, 2.7V-to-5.5V rail-to-rail voltage output DACs in a
16-lead SSOP package. They have built-in high perfor-
mance output buffers and are guaranteed monotonic.
These parts establish new board-density benchmarks for
16- and 14-bit DACs and advance performance standards
for output drive and load regulation in single-supply,
voltage-output DACs.
The parts use a 2-wire, I
LTC2609/LTC2619/LTC2629 operate in both the standard
mode (clock rate of 100kHz) and the fast mode (clock rate
of 400kHz).
The LTC2609/LTC2619/LTC2629 incorporate a power-on
reset circuit. During power-up, the voltage outputs rise
less than 10mV above zero scale; after power-up, they stay
at zero scale until a valid write and update take place. The
power-on reset circuit resets the LTC2609-1/LTC2619-1/
LTC2629-1 to midscale. The voltage outputs stay at
midscale until a valid write and update take place.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 5396245. Patent pending.
, LTC and LT are registered trademarks of Linear Technology Corporation.
15
14
13
12
11
10
7
2609 BD
REFD
V
V
REFC
CA0
CA1
CA2
LTC2609/LTC2619/LTC2629
OUTD
OUTC
®
2609/LTC2619/LTC2629 are quad 16-, 14- and
Rail-to-Rail DACs with
Quad 16-/14-/12-Bit
U
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
2
0
C compatible serial interface. The
0
V
V
Differential Nonlinearity
CC
REF
= 5V
= 4.096V
16384
I
(LTC2609)
2
C Interface
32768
CODE
49152
2609 G02
65535
26091929f
1

Related parts for LTC2619

LTC2619 Summary of contents

Page 1

... DACs and advance performance standards for output drive and load regulation in single-supply, voltage-output DACs. The parts use a 2-wire, I LTC2609/LTC2619/LTC2629 operate in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). The LTC2609/LTC2619/LTC2629 incorporate a power-on reset circuit. During power-up, the voltage outputs rise less than 10mV above zero scale ...

Page 2

... OS Coefficient GE Gain Error Gain Temperature Coefficient (Note 1) Operating Temperature Range: LTC2609C/LTC2619C/LTC2629C LTC2609C-1/LTC2619C-1/LTC2629C-1 ... 0°C to 70°C LTC2609I/LTC2619I/LTC2629I LTC2609I-1/LTC2619I-1/LTC2629I-1 .. – 40°C to 85° ORDER PART NUMBER LTC2609CGN LTC2609CGN-1 15 REFD LTC2609IGN 14 V LTC2609IGN-1 OUTD 13 V LTC2619CGN ...

Page 3

... IN C Capacitive Load for Each Bus Line B C External Capacitive Load on Address CAX Pins LTC2609/LTC2619/LTC2629 ● The denotes specifications which apply over the full operating = 25°C. REFA = REFB = REFC = REFD = 4.096V (V A unloaded, unless otherwise noted. (Note 9) OUT CONDITIONS ± ...

Page 4

... REF and 3/4 scale to 1/4 scale. Load parallel with 200pF to GND. 4 ● The denotes specifications which apply over the full operating = 25°C. REFA = REFB = REFC = REFD = 4.096V (V A unloaded, unless otherwise noted. OUT LTC2629/LTC2629-1 LTC2619/LTC2619-1 LTC2609/LTC2609-1 MIN TYP MAX 7 2.7 0.7 1000 12 180 120 ...

Page 5

... Settling to ±1LSB V OUT 100µV/DIV 9TH CLOCK OF 3RD DATA SCL BYTE 2V/DIV 2µs/DIV 4.096V CC REF 1/4 SCALE TO 3/4 SCALE STEP 200pF L L AVERAGE OF 2048 EVENTS LTC2609/LTC2619/LTC2629 Differential Nonlinearity (DNL 4.096V REF 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 ...

Page 6

... LTC2609/LTC2619/LTC2629 W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2619 Integral Nonlinearity (INL 4.096V REF –2 –4 –6 –8 0 4096 8192 12288 16383 CODE 2609 G09 LTC2629 Integral Nonlinearity (INL) 2 4.096V REF 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 0 1024 2048 ...

Page 7

... TEMPERATURE (°C) 2609 G18 Gain Error 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 2 LTC2609/LTC2619/LTC2629 Load Regulation 1.0 CODE = MIDSCALE 0.8 0.6 0.4 0 REF CC –0.2 –0 REF CC –0.6 –0.8 –1.0 –35 –25 –15 – (mA) ...

Page 8

... LTC2609/LTC2619/LTC2629 W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2609/LTC2619/LTC2629 Large-Signal Response V OUT 0.5V/DIV REF CC 1/4 SCALE TO 3/4 SCALE 2.5µs/DIV 2609 G23 Headroom at Rails vs Output Current 5.0 5V SOURCING 4.5 4.0 3.5 3V SOURCING 3.0 2.5 2.0 1.5 1.0 5V SINKING 0.5 3V SINKING (mA) OUT 2609 G26 8 Midscale Glitch Impulse TRANSITION FROM ...

Page 9

... OUT 5. 5.6V REF CODE = SWEPT OUT 1V/DIV LTC2609/LTC2619/LTC2629 Output Voltage Noise, 0.1Hz to 10Hz V OUT 10µV/DIV 0 100k 1M 2609 G29 Short-Circuit Output Current vs V OUT REF CODE = FULL SCALE –10 V OUT –20 –30 – ...

Page 10

... LTC2609/LTC2619/LTC2629 PIN FUNCTIONS GND (Pin 1): Analog Ground. REFLO (Pin 2): Reference Low. The voltage at this pin sets the zero scale (ZS) voltage of all DACs. This pin can be raised above ground ground 3V. CC REFA to REFD (Pins 3, 6, 12, 15): Reference Voltage Inputs for each DAC. REFx sets the full-scale voltage of the DACs. REFLO ≤ ...

Page 11

... W BLOCK DIAGRA REFA 3 DAC OUTA V OUTB DAC B 5 REFB 6 SCL 8 SDA 9 LTC2609/LTC2619/LTC2629 V REFLO GND CONTROL LOGIC 32-BIT SHIFT REGISTER ADDRESS DECODE INTERFACE 15 REFD DAC OUTD DAC OUTC 12 REFC 11 CA0 10 CA1 LOGIC 7 CA2 2609 BD 26091929f 11 ...

Page 12

... LTC2609/LTC2619/LTC2629 TEST CIRCUITS Test Circuit 1 100Ω IH( IL( DIAGRA S SDA LOW r SCL t HD(STA HD(DAT) ALL VOLTAGE LEVELS REFER SU(DAT HD(STA) t SU(STA HIGH AND V LEVELS IH(MIN) IL(MAX) Figure 1 Test Circuit 2 ...

Page 13

... I C bus operating in the fast mode, an active pull-up will be necessary if the bus capacitance is greater than 200pF. The LTC2609/LTC2619/LTC2629 are receive-only (slave) devices. The master can write to the LTC2609/LTC2619/ LTC2629. The LTC2609/LTC2619/LTC2629 do not re- spond to a read from the master. + 0.3V (see Absolute The START (S) and STOP (P) Conditions When the bus is not in use, both SCL and SDA must be high ...

Page 14

... The 16-bit data word consists of the 16-, 14- or 12-bit input code, MSB to LSB, followed don’t care bits (LTC2609, LTC2619 and LTC2629 respectively). A typical LTC2609 write transaction is shown Figure 4 ...

Page 15

... U OPERATIO Write Word Protocol for LTC2609/LTC2619/LTC1629 S SLAVE ADDRESS Input Word (LTC2609 1ST DATA BYTE Input Word (LTC2619 1ST DATA BYTE Input Word (LTC2629 1ST DATA BYTE Table 2 COMMAND Write to Input Register n ...

Page 16

... LTC2609/LTC2619/LTC2629 U OPERATIO then the main bias generation circuit block has been automatically shut down in addition to the individual DAC amplifiers and reference inputs. In this case, the power-up delay time is 12µs (for V = 5V) or 30µs (for V CC Voltage Output The rail-to-rail amplifier has guaranteed load regulation when sourcing or sinking up to 15mA ...

Page 17

... U OPERATIO LTC2609/LTC2619/LTC2629 26091929f 17 ...

Page 18

... LTC2609/LTC2619/LTC2629 U OPERATIO 18 26091929f ...

Page 19

... 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC2609/LTC2619/LTC2629 REFA REFB REFC JP3 ...

Page 20

... LTC2609/LTC2619/LTC2629 PACKAGE DESCRIPTIO .254 MIN .0165 ± .0015 RECOMMENDED SOLDER PAD LAYOUT .007 – .0098 (0.178 – 0.249) .016 – .050 (0.406 – 1.270) NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) 3. DRAWING NOT TO SCALE RELATED PARTS PART NUMBER DESCRIPTION LTC1458/LTC1458L ...

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