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Linear Technology Electronic Components Datasheet

LTC1660 Datasheet

Micropower Octal 8-Bit and 10-Bit DACs

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LTC1660 pdf
FEATURES
s Tiny: 8 DACs in the Board Space of an SO-8
s Micropower: 56µA per DAC Plus
1µA Sleep Mode for Extended Battery Life
s Pin Compatible 8-Bit LTC1665 and 10-Bit LTC1660
s Wide 2.7V to 5.5V Supply Range
s Rail-to-Rail Voltage Outputs Drive 1000pF
s Reference Range Includes Supply for Ratiometric
0V-to-VCC Output
s Reference Input Impedance is Constant—
Eliminates External Buffer
U
APPLICATIO S
s Mobile Communications
s Remote Industrial Devices
s Automatic Calibration for Manufacturing
s Portable Battery-Powered Instruments
s Trim/Adjust Applications
LTC1665/LTC1660
Micropower Octal
8-Bit and 10-Bit DACs
DESCRIPTIO
The 8-bit LTC®1665 and 10-bit LTC1660 integrate eight
accurate, serially addressable digital-to-analog convert-
ers (DACs) in tiny 16-pin narrow SSOP packages. Each
buffered DAC draws just 56µA total supply current, yet is
capable of supplying DC output currents in excess of
5mA and reliably driving capacitive loads to 1000pF.
Sleep mode further reduces total supply current to 1µA.
Linear Technology’s proprietary, inherently monotonic
voltage interpolation architecture provides excellent lin-
earity while allowing for an exceptionally small external
form factor.
Ultralow supply current, power-saving Sleep mode and
extremely compact size make the LTC1665 and LTC1660
ideal for battery-powered applications, while their ease of
use, high performance and wide supply range make them
excellent choices as general purpose converters.
, LTC and LT are registered trademarks of Linear Technology Corporation.
BLOCK DIAGRA
GND 1
VOUT A 2
DAC A
DAC H
VOUT B 3
DAC B
DAC G
VOUT C 4
DAC C
DAC F
VOUT D 5
REF 6
CS/LD 7
SCK 8
DAC D
DAC E
CONTROL
LOGIC
ADDRESS
DECODER
SHIFT REGISTER
16 VCC
15 VOUT H
14 VOUT G
13 VOUT F
12 VOUT E
11 CLR
10 DOUT
9 DIN
1665/60 BD
LTC1665 Differential Nonlinearity (DNL)
0.5
VCC = 5V
0.4 VREF = 4.096V
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
0
64
128
CODE
192 255
1665/60 G09
LTC1660 Differential Nonlinearity (DNL)
1
0.8
VCC = 5V
VREF = 4.096V
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
0 256
512
CODE
768 1023
1665/60 G13
1


Linear Technology Electronic Components Datasheet

LTC1660 Datasheet

Micropower Octal 8-Bit and 10-Bit DACs

No Preview Available !

LTC1660 pdf
LTC1665/LTC1660
ABSOLUTE AXI U RATI GS
(Note 1)
VCC to GND .............................................. – 0.2V to 7.5V
Logic Inputs to GND ................................ – 0.2V to 7.5V
VOUT A, VOUT B…VOUT H,
REF to GND ................................. – 0.2V to (VCC + 0.2V)
Maximum Junction Temperature ......................... 125°C
Operating Temperature Range
LTC1665C/LTC1660C ............................ 0°C to 70°C
LTC1665I/LTC1660I .......................... – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
GND 1
VOUT A
VOUT B
VOUT C
VOUT D
REF
2
3
4
5
6
CS/LD 7
SCK 8
16 VCC
15 VOUT H
14 VOUT G
13 VOUT F
12 VOUT E
11 CLR
10 DOUT
9 DIN
GN PACKAGE
N PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PDIP
TJMAX = 125°C, θJA = 150°C/W (GN)
TJMAX = 125°C, θJA = 100°C/W (N)
Consult factory for Military grade parts.
ORDER PART
NUMBER
LTC1665CGN
LTC1665CN
LTC1665IGN
LTC1665IN
LTC1660CGN
LTC1660CN
LTC1660IGN
LTC1660IN
GN PART MARKING
1665 1660
1665I 1660I
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications
are at TA = 25°C. VCC = 2.7V to 5.5V, VREF VCC, VOUT unloaded, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
LTC1665
LTC1660
MIN TYP MAX MIN TYP MAX
Accuracy
Resolution
q8
10
Monotonicity
DNL Differential Nonlinearity
VREF VCC – 0.1V (Note 2)
VREF VCC – 0.1V (Note 2)
q
q
8
10
±0.1 ±0.5
±0.2 ±0.75
INL Integral Nonlinearity
VOS Offset Error
VREF VCC – 0.1V (Note 2)
(Note 7)
q
q
±0.2 ±1.0
±10 ±30
±0.6 ±2.5
±10 ±30
VOS Temperature Coefficient
FSE Full-Scale Error
VCC = 5V, VREF = 4.096V
q
q
± 15
±1 ±4
± 15
±3 ±15
Full-Scale Error Temperature Coefficient
q ±30
± 30
PSR Power Supply Rejection
VREF = 2.5V
0.045
0.18
The q denotes specifications which apply over the full operating temperature range, otherwise specifications
are at TA = 25°C. VCC = 2.7V to 5.5V, VREF VCC, VOUT unloaded, unless otherwise noted.
SYMBOL PARAMETER
CONDITONS
MIN TYP
Reference Input
Input Voltage Range
q0
Resistance
Not in Sleep Mode
q 35
65
Capacitance
(Note 6)
15
IREF Reference Current
Power Supply
Sleep Mode
q 0.001
VCC Positive Supply Voltage
ICC Supply Current
For Specified Performance
VCC = 5V (Note 3)
VCC = 3V (Note 3)
Sleep Mode (Note 3)
q 2.7
q
q
q
450
340
1
MAX
VCC
1
5.5
730
550
3
UNITS
Bits
Bits
LSB
LSB
mV
µV/°C
LSB
µV/°C
LSB/V
UNITS
V
k
pF
µA
V
µA
µA
µA
2


Part Number LTC1660
Description Micropower Octal 8-Bit and 10-Bit DACs
Maker Linear Technology
Total Page 16 Pages
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