Document
LTC2600/LTC2610/LTC2620
Octal 16-/14-/12-Bit Rail-to-Rail DACs in 16-Lead SSOP
FEATURES
n Smallest Pin-Compatible Octal DACs: LTC2600: 16 Bits LTC2610: 14 Bits LTC2620: 12 Bits
n Guaranteed 16-Bit Monotonic Over Temperature n Wide 2.5V to 5.5V Supply Range n Low Power Operation: 250μA per DAC at 3V n Individual Channel Power-Down to 1μA, Max n Ultralow Crosstalk Between DACs (<10μV) n High Rail-to-Rail Output Drive (±15mA, Min) n Double-Buffered Digital Inputs n Pin-Compatible 10-/8-Bit Versions (LTC1660/LTC1665) n Tiny 16-Lead Narrow SSOP
and 20-Lead 4mm × 5mm QFN Packages
APPLICATIONS
n Mobile Communications n Process Control and Industrial Automation n Instrumentation n Automatic Test Equipment
DESCRIPTION
The LTC®2600/LTC2610/LTC2620 are octal 16-, 14- and 12-bit, 2.5V-to-5.5V rail-to-rail voltage-output DACs in 16-lead narrow SSOP and 20-lead 4mm × 5mm QFN packages. They have built-in high performance 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, crosstalk and load regulation in single-supply, voltage-output multiples.
The parts use a simple SPI/MICROWIRE compatible 3-wire serial interface which can be operated at clock rates up to 50MHz. Daisychain capability and a hardware CLR function are included.
The LTC2600/LTC2610/LTC2620 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.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
BLOCK DIAGRAM
(20) GND 1
(1) VOUTA 2
DAC A
DAC H
16 VCC (17) 15 VOUTH (16)
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
(2) VOUTB 3
DAC B
DAC G
14 VOUTG (15)
REGISTER
REGISTER
REGISTER
REGISTER
(3) VOUTC 4
DAC C
DAC F
13 VOUTF (14)
REGISTER
REGISTER
REGISTER
REGISTER
(4) VOUTD 5 (5) REF 6 (7) CS/LD 7 (8) SCK 8
DAC D
DAC E
12 VOUTE (13)
CONTROL LOGIC
DECODE
POWER-ON RESET
11 CLR (11) 10 SDO (10)
32-BIT SHIFT REGISTER NOTE: NUMBERS IN PARENTHESIS REFER TO THE UFD PACKAGE
9 SDI
2600 BD
(9)
DNL (LSB)
Differential Nonlinearity (LTC2600)
1.0 VCC = 5V
0.8 VREF = 4.096V 0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0 0
16384
32768 CODE
49152 65535
2600 G21
2600fe
1
LTC2600/LTC2610/LTC2620
ABSOLUTE MAXIMUM RATINGS (Note 1)
Any Pin to GND ........................................... –0.3V to 6V
Any Pin to VCC ............................................ –6V to 0.3V Operating Temperature Range
LTC2600C/LTC2610C/LTC2620C ............. 0°C to 70°C
LTC2600I/LTC2610I/LTC2620I............. –40°C to 85°C
Storage Temperature Range.................. –65°C to 150°C Maximum Junction Temperature........................... 125°C Lead Temperature (Soldering, 10 sec) ................. 300°C
PIN CONFIGURATION
TOP VIEW
GND 1
VOUTA VOUTB VOUTC VOUTD
REF
2 3 4 5 6
CS/LD 7
SCK 8
16 VCC 15 VOUTH 14 VOUTG 13 VOUTF 12 VOUTE 11 CLR 10 SDO 9 SDI
GN PACKAGE 16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 150°C/W
CS/LD GND SCK DNC SDI DNC SDO VCC
TOP VIEW
VOUTA 1 VOUTB 2 VOUTC 3 VOUTD 4
REF 5
DNC 6
20 19 18 17
16 VOUTH 15 VOUTG 14 VOUTF 21 13 VOUTE 12 DNC 11 CLR
7 8 9 10
UFD PACKAGE 20-LEAD (4mm s 5mm) PLASTIC QFN
TJMAX = 150°C, θJA = 43°C/W EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2600CUFD#PBF
LTC2600CUFD#TRPBF 2600
20-Lead (4mm × 5mm) Plastic DFN 0°C to 70°C
LTC2600IUFD#PBF
LTC2600IUFD#TRPBF 2600
20-Lead (4mm × 5mm) Plastic DFN –40°C to 85°C
LTC2600CGN#PBF
LTC2600CGN#TRPBF
2600
16-Lead Plastic SSOP
0°C to 70°C
LTC2600IGN#PBF
LTC2600IGN#TRPBF
2600I
16-Lead Plastic SSOP
–40°C to 85°C
LTC2610CUFD#PBF
LTC2610CUFD#TRPBF 2610
20-Lead (4mm × 5mm) Plastic DFN 0°C to 70°C
LTC2610IUFD#PBF
LTC2610IUFD#TRPBF 2610
20-Lead (4mm × 5mm) Plastic DFN –40°C to 85°C
LTC2610CGN#PBF
LTC2610CGN#TRPBF
2610
16-Lead Plastic SSOP
0°C to 70°C
LTC2610IGN#PBF
LTC2610IGN#TRPBF
2610I
16-Lead Plastic SSOP
–40°C to 85°C
LTC2620CUFD#PBF
LTC2620CUFD#TRPBF 2620
20-Lead (4mm × 5mm) Plastic DFN 0°C to 70°C
LTC2620IUFD#PBF
LTC2620IUFD#TRPBF 2620
20-Lead (4mm × 5mm) Plastic DFN –40°C to 85°C
LTC2620CGN#PBF
LTC2620CGN#TRPBF
2620
16-Lead Plastic SSOP
0°C to 70°C
LTC2620IGN#PBF
LTC2620IGN#TRPBF
2620I
16-Lead Plastic SSOP
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: .