LTC2626 LINER [Linear Technology], LTC2626 Datasheet

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LTC2626

Manufacturer Part Number
LTC2626
Description
16-/14-/12-Bit Rail-to-Rail DACs with I2C Interface
Manufacturer
LINER [Linear Technology]
Datasheet

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APPLICATIO S
FEATURES
BLOCK DIAGRA
3
2
4
5
1
Mobile Communications
Process Control and Industrial Automation
Instrumentation
Automatic Test Equipment
Smallest Pin-Compatible Single DACs:
LTC2606: 16 Bits
LTC2616: 14 Bits
LTC2626: 12 Bits
Guaranteed 16-Bit Monotonic Over Temperature
27 Selectable Addresses
400kHz I
Wide 2.7V to 5.5V Supply Range
Low Power Operation: 270µA at 3V
Power Down to 1µA, Max
High Rail-to-Rail Output Drive (±15mA, Min)
Double-Buffered Data Latches
Asynchronous DAC Update Pin
LTC2606/LTC2616/LTC2626: Power-On Reset to
Zero Scale
LTC2606-1/LTC2616-1/LTC2626-1: Power-On Reset
to Midscale
Tiny (3mm × 3mm) 10-Lead DFN Package
SCL
SDA
CA0
CA1
CA2
2
C
INTERFACE
ADDRESS
TM
DECODE
I
I
2
2
Interface
C
C
U
CONTROL
W
LOGIC
LDAC
V
10
9
CC
REGISTER
INPUT
REGISTER
DAC
GND
REF
6
8
16-BIT DAC
16-/14-/12-Bit Rail-to-Rail DACs
DESCRIPTIO
The LTC
and 12-bit, 2.7V-to-5.5V rail-to-rail voltage output DACs
in a 10-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
LTC2606/LTC2616/LTC2626 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 LTC2606/LTC2616/LTC2626 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 LTC2606-1/LTC2616-1/
LTC2626-1 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC2606/LTC2616/LTC2626
®
V
OUT
2606/LTC2616/LTC2626 are single 16-, 14-
2606 BD
7
U
with I
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
CC
REF
Differential Nonlinearity
= 5V
2
= 4.096V
16384
C Interface
(LTC2606)
32768
CODE
49152
26061626f
2606 G02
1
65535

Related parts for LTC2626

LTC2626 Summary of contents

Page 1

... The power-on reset circuit resets the LTC2606-1/LTC2616-1/ LTC2626-1 to midscale. The voltage outputs stay at midscale until a valid write and update take place. , LTC and LT are registered trademarks of Linear Technology Corporation. ...

Page 2

... Gain Temperature Coefficient (Note 1) Operating Temperature Range: LTC2606C/LTC2616C/LTC2626C LTC2606-1C/LTC2616-1C/LTC2626-1C ... 0°C to 70°C LTC2606I/LTC2616I/LTC2626I LTC2606-1I/LTC2616-1I/LTC2626-1I .. – 40°C to 85° ORDER PART ORDER PART NUMBER LTC2606CDD LTC2616CDD LTC2616IDD LTC2606IDD LTC2606CDD-1 LTC2616CDD-1 LTC2606IDD-1 LTC2616IDD-1 DD PART MARKING ...

Page 3

... Input Leakage IN C I/O Pin Capacitance IN C Capacitive Load for Each Bus Line B C External Capacitive Load on Address CAX Pins LTC2606/LTC2616/LTC2626 ● The denotes specifications which apply over the full operating = 25°C. REF = 4.096V (V = 5V), REF = 2.048V ( CONDITIONS V = ±10% CC ...

Page 4

... Note 3: Digital inputs Note 4: Guaranteed by design and not production tested. Note 5: Inferred from measurement at code 256 (LTC2606/LTC2606-1), code 64 (LTC2616/LTC2616-1) or code 16 (LTC2626/LTC2626-1) and at full scale. 4 ● The denotes specifications which apply over the full operating = 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 LTC2606/LTC2616/LTC2626 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

... TYPICAL PERFOR A CE CHARACTERISTICS LTC2616 Integral Nonlinearity (INL 4.096V REF –2 –4 –6 –8 0 4096 8192 12288 16383 CODE 2606 G09 LTC2626 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 3072 4095 CODE 2606 G12 6 Differential Nonlinearity (DNL) 1 ...

Page 7

... TEMPERATURE (°C) 2606 G20 Gain Error 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 2 LTC2606/LTC2616/LTC2626 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

... LTC2606/LTC2616/LTC2626 W U TYPICAL PERFOR A CE CHARACTERISTICS LTC2606/LTC2616/LTC2626 Large-Signal Response V OUT 0.5V/DIV REF CC 1/4-SCALE TO 3/4-SCALE 2.5µs/DIV 2606 G25 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 650 600 550 500 450 400 ...

Page 9

... FREQUENCY (Hz) Short-Circuit Output Current vs V (Sinking) OUT 0mA 5.6V REF CODE = 0 V SWEPT OUT CC 1V/DIV LTC2606/LTC2616/LTC2626 Output Voltage Noise, 0.1Hz to 10Hz V OUT 10µV/DIV 0 1 100k 1M 2606 G32 Short-Circuit Output Current vs V OUT 0mA V V CODE = FULL SCALE V 2606 G18 ...

Page 10

... LTC2606/LTC2616/LTC2626 PIN FUNCTIONS CA2 (Pin 1): Chip Address Bit 2. Tie this pin leave it floating to select slave address for the part (Table 1). SDA (Pin 2): Serial Data Bidirectional Pin. Data is shifted into the SDA pin and acknowledged by the SDA pin. This pin is high impedance while data is shifted in ...

Page 11

... SCL INTERFACE SDA 2 CA0 CA1 5 ADDRESS CA2 DECODE 1 TEST CIRCUITS Test Circuit 1 100Ω IH( IL( LTC2606/LTC2616/LTC2626 REF CC INPUT DAC REGISTER REGISTER CONTROL LOGIC LDAC GND OUT 16-BIT DAC 7 2606 BD Test Circuit ...

Page 12

... LTC2606/LTC2616/LTC2626 DIAGRA S 12 26061626f ...

Page 13

... REF pulse. The LTC2606/LTC2616/LTC2626 respond to a write by a master in this manner. The LTC2606/LTC2616/ LTC2626 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

... The 16-bit data word consists of the 16-, 14- or 12-bit input code, MSB to LSB, followed don’t care bits (LTC2606, LTC2616 and LTC2626 respectively). A typical LTC2606 write transaction is shown Figure 4 ...

Page 15

... OPERATIO Write Word Protocol for LTC2606/LTC2616/LTC1626 S SLAVE ADDRESS Input Word (LTC2606 1ST DATA BYTE Input Word (LTC2616 1ST DATA BYTE Input Word (LTC2626 1ST DATA BYTE Table 2 COMMAND Write to Input Register 0 0 ...

Page 16

... Resistance here will add directly to the effective DC output impedance of the device (typically 0.050Ω). Note that the LTC2606/LTC2616/ LTC2626 are no more susceptible to these effects than other parts of their type; on the contrary, they allow layout-based performance improvements to shine rather than limiting attainable performance with excessive internal resistance ...

Page 17

... U OPERATIO LTC2606/LTC2616/LTC2626 26061626f 17 ...

Page 18

... LTC2606/LTC2616/LTC2626 U OPERATIO 18 26061626f ...

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. LTC2606/LTC2616/LTC2626 U DD Package 10-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1699) 0.675 ± ...

Page 20

... LTC2606/LTC2616/LTC2626 U TYPICAL APPLICATIO Demo Circuit Schematic. Onboard 20-Bit ADC Measures Key Performance Parameters 10 LDAC 4 CA0 CA0 2 SDA BUS 3 SCL 5 CA1 CA1 1 CA2 CA2 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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