Linear Technology DC1397A-B - LTC2656-H16 Octal SPI 16-bit Voltage Output DAC with 2.048V Reference, req DC590 DC1397A-B DC1397A-B Ficha De Dados
Códigos do produto
DC1397A-B
LTC2656
1
2656fa
BLOCK DIAGRAM
FEATURES
APPLICATIONS
DESCRIPTION
Octal 16-/12-Bit Rail-to-Rail
DACs with 10ppm/°C
Max Reference
n
Mobile Communications
n
Process Control and Industrial Automation
n
Instrumentation
n
Automatic Test Equipment
n
Automotive
n
Precision 10ppm/°C Max Reference
n
Maximum INL Error: ±4LSB at 16 Bits
n
Guaranteed Monotonic over Temperature
n
Selectable Internal or External Reference
n
2.7V to 5.5V Supply Range (LTC2656-L)
n
Integrated Reference Buffers
n
Ultralow Crosstalk Between DACs(<1nV•s)
n
Power-On-Reset to Zero-Scale/Mid-scale
n
Asynchronous LDAC Update Pin
n
Tiny 20-Lead 4mm × 5mm QFN and 20-Lead
Thermally Enhanced TSSOP Packages
The LTC
®
2656 is a family of octal 16-/12-bit rail-to-rail
DACs with a precision integrated reference. The DACs have
built-in high performance, rail-to-rail, output buffers and
are guaranteed monotonic. The LTC2656-L has a full-scale
output of 2.5V with the integrated 10ppm/°C reference and
operates from a single 2.7V to 5.5V supply. The LTC2656-H
has a full-scale output of 4.096V with the integrated refer-
ence and operates from a 4.5V to 5.5V supply. Each DAC can
also operate with an external reference, which sets the DAC
full-scale output to two times the external reference voltage.
These DACs communicate via a SPI/MICROWIRE™ com-
These DACs communicate via a SPI/MICROWIRE™ com-
patible 4-wire serial interface which operates at clock rates
up to 50MHz. The LTC2656 incorporates a power-on reset
circuit that is controlled by the PORSEL pin. If PORSEL
is tied to GND the DACs reset to zero-scale. If PORSEL is
tied to V
CC
, the DACs reset to mid-scale.
REGISTER
REGISTER
INTERNAL REFERENCE
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
DECODE
CONTROL LOGIC
POWER-ON RESET
32-BIT SHIFT REGISTER
REFCOMP
REFIN/OUT
V
CC
GND
DAC A
REF
REF
REF
REF
REF
REF
REF
REF
DAC H
V
OUTH
DAC G
V
OUTG
DAC F
V
OUTF
DAC E
V
OUTE
PORSEL
SDO
SDI
2656 TA01a
CLR
REFLO
V
OUTA
DAC B
V
OUTB
DAC C
V
OUTC
DAC D
V
OUTD
SCK
LDAC
CS/LD
CODE
128
INL (LSB)
0
1
2
65535
2656 TA01b
–1
–2
–4
16384
32768
49152
–3
4
3
DAC A
DAC B
DAC C
DAC D
DAC E
DAC F
DAC G
DAC H
INL vs Code
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.
Protected by U.S. Patents, including 5396245, 6891433.