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LTC1655LCS8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LTC1655/LTC1655L
16-Bit Rail-to-Rail
Micropower DACs in
SO-8 Package
■
16-Bit Monotonicity Over Temperature
■
Deglitched Rail-to-Rail Voltage Output
■
SO-8 Package
■
I
CC(TYP)
: 600µA
■
Internal Reference: 2.048V (LTC1655)
1.25V (LTC1655L)
■
Maximum DNL Error: ±1LSB
■
Settling Time: 20µS to ±1LSB
■
750kHz Max Update Rate
■
Power-On Reset to Zero Volts
■
3-Wire Cascadable Serial Interface
■
Low Cost
■
Pin Compatible Upgrade for LTC1451 12-Bit DAC
Family
The LTC
®
1655/LTC1655L are rail-to-rail voltage output,
16-bit digital-to-analog converters in an SO-8 package.
They include an output buffer and a reference. The 3-wire
serial interface is compatible with SPI/QSPI and
MICROWIRE
TM
protocols. The CLK input has a Schmitt
trigger that allows direct optocoupler interface.
The LTC1655 has an onboard 2.048V reference that can be
overdriven to a higher voltage. The output swings from 0V
to 4.096V when using the internal reference. The typical
power dissipation is 3.0mW on a single 5V supply.
The LTC1655L has an onboard 1.25V reference that can be
overdriven to a higher voltage. The output swings from 0V
to 2.5V when using the internal reference. The typical
power dissipation is 1.8mW on a single 3V supply.
The LTC1655/LTC1655L are pin compatible with Linear
Technology’s 12-bit V
OUT
DAC family, allowing an easy
upgrade path. They are the only buffered 16-bit DACs in
an SO-8 package and they include an onboard reference
for standalone performance.
■
Digital Calibration
■
Industrial Process Control
■
Automatic Test Equipment
■
Cellular Telephones
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
–
+
16-BIT
DAC
LTC1655: 4.5V TO 5.5V
LTC1655L: 2.7V TO 5.5V
LTC1655: 2.048V
LTC1655L: 1.25V
GND
POWER-ON
RESET
TO
OTHER
DACS
16-BIT
SHIFT
REG
AND
DAC
LATCH
µP
D
IN
V
CC
16
REF
2
86
D
OUT
4
5
1655/55L TA01
CLK1
CS/LD3
7
V
OUT
REF
Functional Block Diagram: 16-Bit Rail-to-Rail DAC
Differential Nonlinearity
vs Input Code
CODE
0
–1.0
–0.2
–0.4
–0.6
–0.8
0
0.2
0.4
0.6
0.8
1.0
DNL ERROR (LSB)
16384 32768
1655/55L TA02
49152
65535
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
FU CTIO AL BLOCK DIAGRA
UU
W
2
LTC1655/LTC1655L
ABSOLUTE MAXIMUM RATINGS
W
WW
U
ORDER PART
NUMBER
WU
U
PACKAGE
/
O
RDER I FOR ATIO
LTC1655CN8
LTC1655IN8
LTC1655CS8
LTC1655IS8
LTC1655LCN8
LTC1655LIN8
LTC1655LCS8
LTC1655LIS8
S8 PART MARKING
1655
1655I
1655L
1655LI
Consult factory for Military grade parts.
(Note 1)
V
CC
to GND .............................................. –0.5V to 7.5V
TTL Input Voltage .................................... –0.5V to 7.5V
V
OUT
, REF ....................................... – 0.5V to V
CC
+ 0.5V
Maximum Junction Temperature ......................... 125°C
Operating Temperature Range
LTC1655C/LTC1655LC ........................... 0°C to 70°C
LTC1655I/LTC1655LI ........................ –40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
1
2
3
4
8
7
6
5
TOP VIEW
V
CC
V
OUT
REF
GND
CLK
D
IN
CS/LD
D
OUT
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 125°C, θ
JA
= 100°C/W (N8)
T
JMAX
= 125°C, θ
JA
= 150°C/W (S8)
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
CC
= 4.5V to 5.5V (LTC1655), V
CC
= 2.7V to 5.5V (LTC1655L); V
OUT
unloaded, REF unloaded, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DAC
Resolution ● 16 Bits
Monotonicity ● 16 Bits
DNL Differential Nonlinearity Guaranteed Monotonic (Note 2)
LTC1655, REF = 2.2V, V
CC
= 5V (Note 8) (External) ● ±0.3 ±1.0 LSB
LTC1655L, REF = 2.2V, V
CC
= 5V (Note 8) (External) ● ±0.5 ±1.0 LSB
INL Integral Nonlinearity LTC1655, REF = 2.2V, V
CC
= 5V (Note 8) (External) ● ±8 ±20 LSB
LTC1655L, REF = 2.2V, V
CC
= 5V (Note 8) (External) ● ±8 ±20 LSB
ZSE Zero Scale Error LTC1655 ● 0 3.0 mV
LTC1655L
● 0 3.5 mV
V
OS
Offset Error Measured at Code 200
LTC1655, REF = 2.2V, V
CC
= 5V (Note 8) (External) ● ±0.5 ±3.0 mV
LTC1655L, REF = 1.3V, V
CC
= 2.7V (Note 8) (External) ● ±0.5 ±3.5 mV
V
OS
TC Offset Error Tempco ±5 µV/°C
Gain Error REF = 2.2V (External), V
CC
= 5V (Note 8) ● ±5 ±16 LSB
Gain Error Drift 0.5 ppm/°C
Power Supply
V
CC
Positive Supply Voltage For Specified Performance
LTC1655
● 4.5 5.5 V
LTC1655L
● 2.7 5.5 V
I
CC
Supply Current (Note 3) ● 600 1200 µA
3
LTC1655/LTC1655L
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
CC
= 4.5V to 5.5V (LTC1655), V
CC
= 2.7V to 5.5V (LTC1655L); V
OUT
unloaded, REF unloaded, unless otherwise noted.
Op Amp DC Performance
Short-Circuit Current Low V
OUT
Shorted to GND
LTC1655
● 70 120 mA
LTC1655L
● 70 140 mA
Short-Circuit Current High V
OUT
Shorted to V
CC
LTC1655 ● 80 140 mA
LTC1655L
● 70 150 mA
Output Impedance to GND Input Code = 0
LTC1655
● 40 120 Ω
LTC1655L
● 70 160 Ω
Output Line Regulation Input Code = 65535, with Internal Reference ±3 mV/V
AC Performance
Voltage Output Slew Rate (Note 4) ● ±0.3 ±0.7 V/µs
Voltage Output Settling Time (Note 4) to 0.0015% (16-Bit Settling Time), V
CC
= 5V 20 µs
(Note 4) to 0.012% (13-Bit Settling Time), V
CC
= 5V 10 µs
Digital Feedthrough (Note 5) 0.3 nV-s
Midscale Glitch Impulse DAC Switched Between 8000
H
and 7FFF
H
12 nV-s
Output Voltage Noise LTC1655, At 1kHz 280 nV√Hz
Spectral Density LTC1655L, At 1kHz 220 nV√Hz
Reference Output
Reference Output Voltage LTC1655 ● 2.036 2.048 2.060 V
LTC1655L
● 1.240 1.250 1.260 V
Reference Input Range (Notes 6, 7) LTC1655 2.2 V
CC
/2 V
LTC1655L 1.3 V
CC
/2 V
Reference Output Tempco LTC1655 5 ppm/°C
LTC1655L 10 ppm/°C
Reference Input Resistance LTC1655, REF Overdriven to 2.2V ● 8.5 13 kΩ
LTC1655L, REF Overdriven to 1.3V
● 7.0 13 kΩ
Reference Short-Circuit Current ● 40 100 mA
Reference Output Line Regulation ±1.5 mV/V
Reference Load Regulation I
OUT
= 100µA ● 5 mV/A
Reference Output Voltage Noise LTC1655, At 1kHz 150 nV√Hz
Spectral Density LTC1655L, At 1kHz 115 nV√Hz
Digital I/O
V
IH
Digital Input High Voltage LTC1655 ● 2.4 V
LTC1655L
● 2.0 V
V
IL
Digital Input Low Voltage LTC1655 ● 0.8 V
LTC1655L
● 0.6 V
V
OH
Digital Output High Voltage LTC1655, I
OUT
= –1mA ● V
CC
– 1.0 V
LTC1655L, I
OUT
= – 1mA ● V
CC
– 0.7 V
V
OL
Digital Output Low Voltage LTC1655, I
OUT
= 1mA ● 0.4 V
LTC1655L, I
OUT
= 1mA ● 0.4 V
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC1655LCS8#PBF

Mfr. #:
Buy LTC1655LCS8#PBF
Manufacturer:
Analog Devices Inc.
Description:
Digital to Analog Converters - DAC 16-bit Vout DAC w/ Internal Reference
Lifecycle:
New from this manufacturer.
Delivery:
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