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LTC2668CUJ-16#PBF

Description
DAC 16-CH 16-bit 40-Pin QFN EP Tube
CategoryAnalog mixed-signal IC    converter   
File Size566KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric View All

LTC2668CUJ-16#PBF Overview

DAC 16-CH 16-bit 40-Pin QFN EP Tube

LTC2668CUJ-16#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Converter TypeGeneral Purpose
Resolution16bit
Number of DAC Channels16
Number of Outputs per Chip16
Maximum Settling Time (us)20.5(Typ)
Digital Interface TypeSerial (3-Wire, SPI, Microwire)
Output TypeVoltage
Output PolarityUnipolar|Bipolar
Voltage ReferenceInternal|External
Minimum Single Supply Voltage (V)4.5
Typical Single Supply Voltage (V)5/15
Maximum Single Supply Voltage (V)5.5/15.75
Minimum Dual Supply Voltage (V)±4.5
Typical Dual Supply Voltage (V)±15/5
Maximum Dual Supply Voltage (V)±15.75/5.5
Power Supply TypeSingle|Dual
Integral Nonlinearity Error±4LSB
Full Scale Error±0.08%FSR
Digital Supply SupportNo
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
PackagingTube
Supplier Temperature GradeCommercial
Pin Count40
Standard Package NameQFN
Supplier PackageQFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length6
Package Width6
PCB changed40
Lead ShapeNo Lead
Features
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LTC2668
16-Channel 16-/12-Bit ±10V
V
OUT
SoftSpan DACs with
10ppm/°C Max Reference
Description
The
LTC
®
2668
is a family of 16-channel, 16-/12-bit ±10V
digital-to-analog converters with integrated precision
references. They are guaranteed monotonic and have
built-in rail-to-rail output buffers. These SoftSpan™ DACs
offer five output ranges up to ±10V. The range of each
channel is independently programmable, or the part can
be hardware-configured for operation in a fixed range.
The integrated 2.5V reference is buffered separately to each
channel; an external reference can be used for additional
range options. The LTC2668 also includes A/B toggle
capability via a dedicated pin or software toggle command.
The SPI/Microwire-compatible 3-wire serial interface
operates on logic levels as low as 1.71V at clock rates
up to 50MHz.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
n
n
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n
n
n
n
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n
Precision Reference 10ppm/°C Max
Independently Programmable Output Ranges:
0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V
Full 16-Bit/12-Bit Resolution at All Ranges
Maximum INL Error: ±4LSB at 16 Bits
A/B Toggle via Software or Dedicated Pin
16:1 Analog Multiplexer
Guaranteed Monotonic Over Temperature
Internal or External Reference
Outputs Drive ±10mA Guaranteed
1.8V to 5V SPI Serial interface
6mm × 6mm 40-Lead QFN Package
applications
n
n
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Optical Networking
Instrumentation
Data Acquisition
Automatic Test Equipment
Process Control and Industrial Automation
Block Diagram
REFCOMP 34
OVRTMP
38
RGSTR A
GND
14, 37
REFLO
13, 35
V
OUT0
2
V
OUT1
3
V
OUT2
4
V
OUT3
5
V
OUT4
6
V
OUT5
7
V
OUT6
8
V
OUT7
9
DAC 7
SPAN
SPAN
V
REF
REGISTER
V
REF
REGISTER
RGSTR A
V
REF
REGISTER
INTERNAL REFERENCE
33 REF
36 AVP
V
+
10, 31
V
11, 32
Integral Nonlinearity (LTC2668-16)
4
3
2
INL (LSB)
1
0
–1
–2
–3
–4
0
16384
32768
CODE
49152
65535
2668 TA01b
±10V RANGE
MUX
RGSTR B
RGSTR B
MUX
DAC 0
SPAN
SPAN
DAC 15
SPAN
SPAN
30 V
OUT15
29 V
OUT14
28 V
OUT13
27 V
OUT12
• • •
• • •
• • •
• • •
• • •
• • •
• • •
• • •
RGSTR A
RGSTR A
V
REF
REGISTER
26 V
OUT11
25 V
OUT10
24 V
OUT9
MUX
RGSTR B
RGSTR B
MUX
DAC 8
SPAN
SPAN
23 V
OUT8
21
CLR
15
LDAC
20 TGP
39 MSP0
CS/LD
16
SCK 17
SDI 19
SDO 18
MUX 12
CONTROL LOGIC
DECODE
POWER-ON RESET
32-BIT SHIFT REGISTER
MONITOR MUX
40 MSP1
1
MSP2
TOGGLE SELECT REGISTER
22 OVP
2668 TA01a
2668fa
For more information
www.linear.com/LTC2668
1
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