LTC1595/LTC1596/LTC1596-1
Serial 16-Bit
Multiplying DACs
FEATURES
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DESCRIPTION
The
LTC
®
1595/LTC1596/LTC1596-1
are serial input, 16-bit
multiplying current output DACs. The LTC1595 is pin and
hardware compatible with the 12-bit DAC8043 and comes
in 8-pin PDIP and SO packages. The LTC1596 is pin and
hardware compatible with the 12-bit DAC8143/AD7543
and comes in the 16-pin SO wide package.
Both are specified over the industrial temperature range.
Sensitivity of INL to op amp V
OS
is reduced by five times
compared to the industry standard 12-bit DACs, so most
systems can be easily upgraded to true 16-bit resolution
and linearity without requiring more precise op amps.
These DACs include an internal deglitching circuit that
reduces the glitch impulse by more than ten times to less
than 1nV-s typ.
The DACs have a clear input and a power-on reset. The
LTC1595 and LTC1596 reset to zero-scale. The LTC1596-1
is a version of the LTC1596 that resets to mid-scale.
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.
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SO-8 Package (LTC1595)
DNL and INL: 1LSB Max
Low Glitch Impulse: 1nV-s Typ
Fast Settling to 1LSB: 2µs (with LT1468)
Pin Compatible with Industry Standard
12-Bit DACs: DAC8043 and DAC8143/AD7543
4-Quadrant Multiplication
Low Supply Current: 10µA Max
Power-On Reset
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LTC1595/LTC1596: Resets to Zero-Scale
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LTC1596-1: Resets to Mid-Scale
3-Wire SPI and MICROWIRE Compatible
Serial Interface
Daisy-Chain Serial Output (LTC1596)
Asynchronous Clear Input
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LTC1596: Clears to Zero-Scale
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LTC1596-1: Clears to Mid-Scale
APPLICATIONS
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Process Control and Industrial Automation
Software Controlled Gain Adjustment
Digitally Controlled Filter and Power Supplies
Automatic Test Equipment
TYPICAL APPLICATION
SO-8 Multiplying 16-Bit DAC Has Easy 3-Wire Serial Interface
V
IN
1.0
5V
INTEGRAL NONLINEARITY (LSB)
8
CLOCK
DATA
LOAD
7
6
5
CLK
SRI
LD
GND
4
LTC1595
OUT1
1
2
R
FB
3
V
DD
V
REF
33pF
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
– 0.8
–1.0
0
49152
16384
32768
DIGITAL INPUT CODE
65535
1595/96 TA02
Integral Nonlinearity
+
1595/96 TA01
–
LT 1468
®
V
OUT
159561fc
For more information
www.linear.com/LTC1595
1
LTC1595/LTC1596/LTC1596-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V
DD
to AGND ............................................... –0.5V to 7V
V
DD
to DGND............................................... –0.5V to 7V
AGND to DGND ........................................... V
DD
+ 0.5V
DGND to AGND ............................................V
DD
+ 0.5V
V
REF
to AGND, DGND ..............................................±25V
R
FB
to AGND, DGND................................................±25V
Digital Inputs to DGND ............... –0.5V to (V
DD
+ 0.5V)
V
OUT1
, V
OUT2
to AGND ................. –0.5V to (V
DD
+ 0.5V)
Maximum Junction Temperature .......................... 150°C
Operating Temperature Range
LTC1595C/LTC1596C/LTC1596-1C .......... 0°C to 70°C
LTC1595I/LTC1596I/LTC1596-1I ......... –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
V
REF
R
FB
OUT1
GND
1
2
3
4
8
7
6
5
V
DD
CLK
SRI
LD
OUT1
OUT2
AGND
STB1
LD1
SRO
SRI
STB2
1
2
3
4
5
6
7
8
16 R
FB
15 V
REF
14 V
DD
13
CLR
12 DGND
11 STB4
10
STB3
9
LD2
N8 PACKAGE
S8 PACKAGE
8-LEAD PDIP
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 130°C/W (N)
T
JMAX
= 150°C,
θ
JA
= 190°C/W (S)
SW PACKAGE
16-LEAD PLASTIC SO WIDE
T
JMAX
= 150°C,
θ
JA
= 100°C/W (N)
T
JMAX
= 150°C,
θ
JA
= 130°C/W (SW)
2
159561fc
For more information
www.linear.com/LTC1595
LTC1595/LTC1596/LTC1596-1
ORDER INFORMATION
LEAD FREE FINISH
LTC1595ACN8#PBF
LTC1595ACS8#PBF
LTC1595BCN8#PBF
LTC1595BCS8#PBF
LTC1595CCN8#PBF
LTC1595CCS8#PBF
LTC1595AIN8#PBF
LTC1595AIS8#PBF
LTC1595BIN8#PBF
LTC1595BIS8#PBF
LTC1595CIN8#PBF
LTC1595CIS8#PBF
LTC1596ACSW#PBF
LTC1596BCSW#PBF
LTC1596CCSW#PBF
LTC1596AISW#PBF
LTC1596BISW#PBF
LTC1596CISW#PBF
LTC1596-1ACSW#PBF
LTC1596-1BCSW#PBF
LTC1596-1CCSW#PBF
LTC1596-1AISW#PBF
LTC1596-1BISW#PBF
LTC1596-1CISW#PBF
TAPE AND REEL
LTC1595ACN8#TRPBF
LTC1595ACS8#TRPBF
LTC1595BCN8#TRPBF
LTC1595BCS8#TRPBF
LTC1595CCN8#TRPBF
LTC1595CCS8#TRPBF
LTC1595AIN8#TRPBF
LTC1595AIS8#TRPBF
LTC1595BIN8#TRPBF
LTC1595BIS8#TRPBF
LTC1595CIN8#TRPBF
LTC1595CIS8#TRPBF
LTC1596ACSW#TRPBF
LTC1596BCSW#TRPBF
LTC1596CCSW#TRPBF
LTC1596AISW#TRPBF
LTC1596BISW#TRPBF
LTC1596CISW#TRPBF
PART MARKING*
LTC1595ACN8
1595A
LTC1595BCN8
1595B
LTC1595CCN8
1595C
LTC1595AIN8
1595AI
LTC1595BIN8
1595BI
LTC1595CIN8
1595CI
LTC1596ACSW
LTC1596BCSW
LTC1596CCSW
LTC1596AISW
LTC1596BISW
LTC1596CISW
PACKAGE DESCRIPTION
8-Lead PDIP
8-Lead Plastic SO
8-Lead PDIP
8-Lead Plastic SO
8-Lead PDIP
8-Lead Plastic SO
8-Lead PDIP
8-Lead Plastic SO
8-Lead PDIP
8-Lead Plastic SO
8-Lead PDIP
8-Lead Plastic SO
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
16-Lead Plastic SO Wide
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
LTC1596-1ACSW#TRPBF LTC1596-1ACSW
LTC1596-1BCSW#TRPBF LTC1596-1BCSW
LTC1596-1CCSW#TRPBF LTC1596-1CCSW
LTC1596-1AISW#TRPBF
LTC1596-1BISW#TRPBF
LTC1596-1CISW#TRPBF
LTC1596-1AISW
LTC1596-1BISW
LTC1596-1CISW
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
159561fc
For more information
www.linear.com/LTC1595
3
LTC1595/LTC1596/LTC1596-1
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 5V ±10%, V
REF
= 10V, V
OUT1
= V
OUT2
= AGND = 0V, T
A
= T
MIN
to
T
MAX
, unless otherwise noted.
LTC1595A/96A/96-1A
SYMBOL
Accuracy
Resolution
Monotonicity
INL
DNL
GE
Integral Nonlinearity
Differential
Nonlinearity
Gain Error
(Note 2) T
A
= 25°C
T
MIN
to T
MAX
T
A
= 25°C
T
MIN
to T
MAX
(Note 3) T
A
= 25°C
T
MIN
to T
MAX
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l
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ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
LTC1595B/96B/96-1B
MIN
16
16
TYP
MAX
LTC1595C/96C/96-1C
MIN
16
15
TYP
MAX
UNITS
Bits
Bits
±4
±4
±2
±2
±32
±32
LSB
LSB
LSB
LSB
LSB
LSB
MIN
16
16
TYP
MAX
±0.25
±0.35
±0.2
±0.2
2
3
±1
±1
±1
±1
±16
±16
±2
±2
±1
±1
±16
±32
V
DD
= 5V ±10%, V
REF
= 10V, V
OUT1
= V
OUT2
= AGND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
SYMBOL
I
LEAKAGE
PARAMETER
Gain Temperature Coefficient
OUT1 Leakage Current
Zero-Scale Error
PSRR
R
REF
Power Supply Rejection
V
REF
Input Resistance
Output Current Settling Time
Mid-Scale Glitch Impulse
Digital-to-Analog Glitch Impulse
Multiplying Feedthrough Error
THD
Total Harmonic Distortion
Equivalent DAC Thermal Noise Voltage Density
Analog Outputs (Note 4)
C
OUT
Output Capacitance (Note 4)
DAC Register Loaded to All 1s, C
OUT1
DAC Register Loaded to All 0s, C
OUT1
Digital Inputs
V
IH
V
IL
I
IN
C
IN
V
OH
V
OL
Digital Input High Voltage
Digital Input Low Voltage
Digital Input Current
Digital Input Capacitance
Digital Output High Voltage
Digital Output Low Voltage
(Note 4) V
IN
= 0V
I
OH
= 200µA
I
OL
= 1.6mA
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CONDITIONS
(Note 4) ∆Gain/∆Temperature
(Note 5) T
A
= 25°C
T
MIN
to T
MAX
T
A
= 25°C
T
MIN
to T
MAX
V
DD
= 5V ±10%
(Note 6)
(Notes 7, 8)
Using LT1122 Op Amp, C
FEEDBACK
= 33pF
Full-Scale Transition, V
REF
= 0V,
Using LT1122 Op Amp, C
FEEDBACK
= 33pF
V
REF
= ±10V, 10kHz Sine Wave
(Note 9)
(Note 10) f = 1kHz
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MIN
TYP
1
MAX
2
±3
±15
±0.2
±1
UNITS
ppm/°C
nA
nA
LSB
LSB
LSB/V
kΩ
µs
nV-s
nV-s
mV
P-P
dB
nV/√Hz
±1
5
7
1
1
2
1
108
11
115
70
2.4
±2
10
Reference Input
l
AC Performance
130
80
pF
pF
V
0.8
0.001
±1
8
4
0.4
V
µA
pF
V
V
Digital Outputs: SRO (LTC1596/LTC1596-1)
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4
159561fc
For more information
www.linear.com/LTC1595
LTC1595/LTC1596/LTC1596-1
ELECTRICAL CHARACTERISTICS
SYMBOL
t
DS
t
DH
t
SRI
t
CH
t
CL
t
LD
t
ASB
PARAMETER
Serial Input to CLK Setup Time
Serial Input to CLK Hold Time
Serial Input Data Pulse Width
Clock Pulse Width High
Clock Pulse Width Low
Load Pulse Width
LSB Clocked into Input Register to DAC Register Load Time
Timing Characteristics (LTC1595)
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 5V ±10%, V
REF
= 10V, V
OUT1
= GND = 0V, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.
CONDITIONS
MIN
30
30
60
60
60
60
0
TYP
5
5
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns
V
DD
= 5V ±10%, V
REF
= 10V, V
OUT1
= V
OUT2
= AGND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
SYMBOL
t
DS1
t
DS2
t
DS3
t
DS4
t
DH1
t
DH2
t
DH3
t
DH4
t
SRI
t
STB1
to t
STB4
t
STB1
to t
STB4
t
LD1
, t
LD2
t
ASB
t
CLR
t
PD1
t
PD
Power Supply
V
DD
I
DD
Supply Voltage
Supply Current
Digital Inputs = 0V or V
DD
l
l
PARAMETER
Serial Input to Strobe Setup Time
CONDITIONS
STB1 Used as the Strobe
STB2 Used as the Strobe
STB3
Used as the Strobe
STB4 Used as the Strobe
l
l
l
l
l
l
l
l
l
MIN
30
20
25
20
30
40
35
40
60
60
60
60
0
100
30
30
4.5
TYP
5
–5
0
–5
5
15
10
15
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Timing Characteristics (LTC1596/LTC1596-1)
Serial Input to Strobe Hold Time
STB1 Used as the Strobe
STB2 Used as the Strobe
STB3
Used as the Strobe
STB4 Used as the Strobe
Serial Input Data Pulse Width
Strobe Pulse Width
Strobe
Pulse Width
LD
Pulse Width
LSB Strobed Into Input Register to Load DAC
Register Time
Clear Pulse Width
STB1 to SRO Propagation Delay
STB2,
STB3,
STB4 to SRO Propagation Delay
C
L
= 50pF
C
L
= 50pF
(Note 11)
(Note 12)
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l
l
l
l
150
200
5
1.5
5.5
10
ns
ns
V
µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
±1LSB = ±0.0015% of full-scale = ±15.3ppm of full-scale.
Note 3:
Using internal feedback resistor.
Note 4:
Guaranteed by design, not subject to test.
Note 5:
I
OUT1
with DAC register loaded with all 0s.
Note 6:
Typical temperature coefficient is 100ppm/°C.
Note 7:
OUT1 load = 100Ω in parallel with 13pF.
Note 8:
To 0.0015% for a full-scale change, measured from the falling
edge of
LD1, LD2
or
LD.
Note 9:
V
REF
= 6V
RMS
at 1kHz. DAC register loaded with all 1s;
op amp = LT1007.
Note 10:
Calculation from e
n
= √4kTRB where: k = Boltzmann constant
(J/°K); R = resistance (Ω); T = temperature (°K); B = bandwidth (Hz).
Note 11:
Minimum high time for STB1, STB2, STB4. Minimum low time
for
STB3.
Note 12:
Minimum low time for STB1, STB2, STB4. Minimum high time
for
STB3.
159561fc
For more information
www.linear.com/LTC1595
5
51单片机
