LTC2668 반도체 회로 부품 판매점
16-Channel 16-/12-Bit DACs
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 Linear Technology |
Features
n Precision Reference 10ppm/°C Max
n Independently Programmable Output Ranges:
0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V
n Full 16-Bit/12-Bit Resolution at All Ranges
n Maximum INL Error: ±4LSB at 16 Bits
n A/B Toggle via Software or Dedicated Pin
n 16:1 Analog Multiplexer
n Guaranteed Monotonic Over Temperature
n Internal or External Reference
n Outputs Drive ±10mA Guaranteed
n 1.8V to 5V SPI Serial interface
n 6mm × 6mm 40-Lead QFN Package
Applications
n Optical Networking
n Instrumentation
n Data Acquisition
n Automatic Test Equipment
n Process Control and Industrial Automation
LTC2668
16-Channel 16-/12-Bit ±10V
VOUT 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.
Block Diagram
REFCOMP 34
OVRTMP 38
GND
14, 37
REFLO
13, 35
VREF
VOUT0 2
VOUT1 3
VOUT2 4
VOUT3 5
VOUT4 6
VOUT5 7
VOUT6 8
VOUT7 9
DAC 0
VREF
DAC 7
CS/LD 16
SCK 17
SDI 19
SDO 18
MUX 12
INTERNAL REFERENCE
MUX MUX
VREF
33 REF
36 AVP
V+
10, 31
V–
11, 32
DAC 15
30 VOUT15
29 VOUT14
28 VOUT13
27 VOUT12
MUX
MUX
VREF
26 VOUT11
25 VOUT10
24 VOUT9
DAC 8
CONTROL LOGIC
DECODE
32-BIT SHIFT REGISTER
POWER-ON RESET
MONITOR MUX TOGGLE SELECT REGISTER
23 VOUT8
21 CLR
15 LDAC
20 TGP
39 MSP0
40 MSP1
1 MSP2
22 OVP
2668 TA01a
Integral Nonlinearity (LTC2668-16)
4
±10V RANGE
3
2
1
0
–1
–2
–3
–4
0
16384
32768
CODE
49152 65535
2668 TA01b
For more information www.linear.com/LTC2668
2668f
1
LTC2668
Absolute Maximum Ratings
(Notes 1, 2)
Analog Supply Voltage (AVP)........................ –0.3V to 6V
Digital I/O Voltage (OVP)............................... –0.3V to 6V
REFLO........................................................ –0.3V to 0.3V
V+............................................................ –0.3V to 16.5V
V–.............................................................–16.5V to 0.3V
CS/LD, SCK, SDI, LDAC, CLR, TGP............... –0.3V to 6V
MSP0, MSP1, MSP2........ –0.3V to Min (AVP + 0.3V, 6V)
VOUT0 to VOUT15, MUX....V–– 0.3V to V++ 0.3V (Max ±16.5V)
REF, REFCOMP................ –0.3V to Min (AVP + 0.3V, 6V)
SDO.................................–0.3V to Min (OVP + 0.3V, 6V)
OVRTMP........................................................ –0.3V to 6V
Operating Temperature Range
LTC2668C................................................. 0°C to 70°C
LTC2668I..............................................–40°C to 85°C
LTC2668H........................................... –40°C to 125°C
Maximum Junction Temperature........................... 150°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
40 39 38 37 36 35 34 33 32 31
MSP2 1
30 VOUT15
VOUT0 2
29 VOUT14
VOUT1 3
28 VOUT13
VOUT2 4
27 VOUT12
VOUT3 5
VOUT4 6
4V1–
26 VOUT11
25 VOUT10
VOUT5 7
24 VOUT9
VOUT6 8
23 VOUT8
VOUT7 9
V+ 10
22 OVP
21 CLR
11 12 13 14 15 16 17 18 19 20
UJ PACKAGE
40-LEAD (6mm × 6mm) PLASTIC QFN
TJMAX
EXPOSED
P=A1D50IS°CV,–θ, JMAU=S3T3°BCE/WSO, LθDJCER=E2D°CT/OWPCB
2668f
2 For more information www.linear.com/LTC2668
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제조업체: Linear Technology
( linear )
LTC2668 data
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[ LTC2668.PDF ]
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
LTC2664
SoftSpan DACs - Linear Technology
LTC2668
16-Channel 16-/12-Bit DACs - Linear Technology