LTC2617 Linear Technology Corporation, LTC2617 Datasheet

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LTC2617

Manufacturer Part Number
LTC2617
Description
Ltc2617 - 14-bit Dual Rail-to-rail With I2c Interface
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
APPLICATIO S
BLOCK DIAGRA
V
Smallest Pin-Compatible Dual DACs:
LTC2607: 16 Bits
LTC2617: 14 Bits
LTC2627: 12 Bits
Guaranteed Monotonic Over Temperature
27 Selectable Addresses
400kHz I
Wide 2.7V to 5.5V Supply Range
Low Power Operation: 260µA per DAC at 3V
Power Down to 1µA, Max
High Rail-to-Rail Output Drive (±15mA, Min)
Ultralow Crosstalk (30µV)
Double-Buffered Data Latches
Asynchronous DAC Update Pin
LTC2607/LTC2617/LTC2627: Power-On Reset to
Zero Scale
LTC2607-1/LTC2617-1/LTC2627-1: Power-On Reset
to Midscale
Tiny (3mm × 4mm) 12-Lead DFN Package
Mobile Communications
Process Control and Industrial Automation
Instrumentation
Automatic Test Equipment
OUTA
12
CA0
1
2
C
12-/14-/16-BIT DAC
REFLO
TM
CA1
11
2
Interface
U
LDAC
3
INPUT REGISTER
DAC REGISTER
W
GND
SCL
10
4
32-BIT SHIFT REGISTER
2-WIRE INTERFACE
INPUT REGISTER
DAC REGISTER
SDA
REF
9
5
12-/14-/16-BIT DAC
V
8
CC
16-/14-/12-Bit Dual Rail-to-Rail
DESCRIPTIO
CA2
The LTC
12-bit, 2.7V to 5.5V rail-to-rail voltage output DACs in a
12-lead DFN 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
LTC2607/LTC2617/LTC2627 operate in both the standard
mode (clock rate of 100kHz) and the fast mode (clock rate
of 400kHz). An asynchronous DAC update pin (LDAC) is
also included.
The LTC2607/LTC2617/LTC2627 incorporate a power-on
reset circuit. During power-up, the voltage outputs rise less
than 10mV above zero scale; and after power-up, they stay
at zero scale until a valid write and update take place. The
power-on reset circuit resets the LTC2607-1/LTC2617-1/
LTC2627-1 to midscale. The voltage outputs stay at
midscale until a valid write and update takes place.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5396245 and 6891433. Patent Pending
6
, LTC and LT are registered trademarks of Linear Technology Corporation.
7
LTC2607/LTC2617/LTC2627
V
®
OUTB
2607 BD
2607/LTC2617/LTC2627 are dual 16-, 14- and
DACs with I
U
2
C compatible serial interface. The
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
0
0
V
V
Differential Nonlinearity
CC
REF
= 5V
2
= 4.096V
16384
C Interface
(LTC2607)
32768
CODE
49152
26071727f
2607 G02
65535
1

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LTC2617 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 LTC2607/LTC2617/LTC2627 operate in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). An asynchronous DAC update pin (LDAC) is also included. ...

Page 2

... Coefficient (Note 1) Operating Temperature Range: – 0.3V LTC2607C/LTC2617C/LTC2627C LTC2607C-1/LTC2617C-1/LTC2627C-1 ... 0°C to 70°C LTC2607I/LTC2617I/LTC2627I LTC2607I-1/LTC2617I-1/LTC2627I-1 .. – 40°C to 85° ORDER PART ORDER PART NUMBER LTC2617CDE LTC2607CDE LTC2617IDE LTC2607IDE LTC2607CDE-1 LTC2617CDE-1 LTC2607IDE-1 LTC2617IDE-1 DE12 PART MARKING* ...

Page 3

... IN C I/O Pin Capacitance IN C Capacitive Load for Each Bus Line B C External Capacitive Load on Address CAX Pins LTC2607/LTC2617/LTC2627 The ● denotes specifications which apply over the full operating = 25°C. REF = 4.096V (V = 5V), REF = 2.048V ( CONDITIONS ±10 ...

Page 4

... CC measured DAC at midscale, unless otherwise noted. Note 2kΩ to GND ● The denotes specifications which apply over the full operating = 25°C. REF = 4.096V ( LTC2627/LTC2627-1 LTC2617/LTC2617-1 LTC2607/LTC2607-1 MIN TYP MAX 7 2.7 0.8 1000 12 180 120 100 15 The ● denotes specifications which apply over the full operating temperature = 25° ...

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 LTC2607/LTC2617/LTC2627 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

... LTC2607/LTC2617/LTC2627 W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2617 Integral Nonlinearity (INL 4.096V REF –2 –4 –6 –8 0 4096 8192 12288 16383 CODE 2607 G09 LTC2627 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) 2607 G18 Gain Error 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 2 LTC2607/LTC2617/LTC2627 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 40 –35 –25 –15 – (mA) ...

Page 8

... LTC2607/LTC2617/LTC2627 W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2607/LTC2617/LTC2627 Large-Signal Response V OUT 0.5V/DIV REF CC 1/4-SCALE TO 3/4-SCALE 2.5µs/DIV 2607 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 3V SINKING 0 OUT Supply Current vs Logic Voltage 950 900 850 800 750 700 ...

Page 9

... OUT 5. 5.6V REF CODE = SWEPT OUT 1V/DIV LTC2607/LTC2617/LTC2627 Output Voltage Noise, 0.1Hz to 10Hz V OUT 10µV/DIV 0 100k 1M 2607 G30 Short-Circuit Output Current vs V OUT REF CODE = FULL SCALE –10 V OUT –20 –30 – ...

Page 10

... LTC2607/LTC2617/LTC2627 PIN FUNCTIONS CA0 (Pin 1): Chip Address Bit 0. Tie this pin leave it floating to select slave address for the part (Table 1). CA1 (Pin 2): Chip Address Bit 1. Tie this pin leave it floating to select slave address for the part (Table 1) ...

Page 11

... BLOCK DIAGRA REFLO 12-/14-/16-BIT DAC OUTA 1 2 CA0 CA1 TEST CIRCUITS Test Circuit 1 100Ω IH(CAn) IL(CAn) LTC2607/LTC2617/LTC2627 GND REF 9 10 DAC REGISTER DAC REGISTER INPUT REGISTER INPUT REGISTER 32-BIT SHIFT REGISTER 2-WIRE INTERFACE LDAC SCL SDA CAn ...

Page 12

... LTC2607/LTC2617/LTC2627 DIAGRA S 12 26071727f ...

Page 13

... LOW during the HIGH period of this clock REF pulse. The LTC2607/LTC2617/LTC2627 respond to a write by a master in this manner. The LTC2607/LTC2617/ LTC2627 do not acknowledge a read (retains SDA HIGH during the period of the Acknowledge clock pulse). Chip Address The state of CA0, CA1 and CA2 decides the slave address of the part ...

Page 14

... LTC2617 and LTC2627 respectively). A typical LTC2607 write trans- action is shown in Figure 4. The command (C3-C0) and address (A3-A0) assignments are shown in Table 2. The first four commands in the table consist of write and update operations. A write operation loads a 16-bit data word from the 32-bit shift register into the input register of the selected DAC, n ...

Page 15

... U OPERATIO Write Word Protocol for LTC2607/LTC2617/LTC1627 S SLAVE ADDRESS Input Word (LTC2607 1ST DATA BYTE Input Word (LTC2617 1ST DATA BYTE Input Word (LTC2627 1ST DATA BYTE Table 2 COMMAND Write to Input Register ...

Page 16

... LTC2607/LTC2617/LTC2627 U OPERATIO If a complete input word has been written to the part, a low on the LDAC pin causes the DAC registers to be updated with the contents of the input registers. If the input word is being written to the part, a low going pulse on the LDAC pin before the completion of three bytes of data powers up the DACs but does not cause the outputs to be updated ...

Page 17

... U OPERATIO LTC2607/LTC2617/LTC2627 26071727f 17 ...

Page 18

... LTC2607/LTC2617/LTC2627 U OPERATIO 18 26071727f ...

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. LTC2607/LTC2617/LTC2627 U DE/UE Package 12-Lead Plastic DFN (4mm × 3mm) (Reference LTC DWG # 05-08-1695) 0.65 ± ...

Page 20

... LTC2607/LTC2617/LTC2627 U TYPICAL APPLICATIO Demo Circuit Schematic. Onboard 20-Bit ADC Measures Key Performance Parameters 3 LDAC 1 CA0 2 CA1 6 CA2 4 SCL BUS 5 SDA GND 10, 13 RELATED PARTS PART NUMBER DESCRIPTION LTC1458/LTC1458L Quad 12-Bit Rail-to-Rail Output DACs with Added Functionality LTC1654 Dual 14-Bit Rail-to-Rail V ...

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