LTC8143FSW#TRPBF [Linear]
LTC8143 - Improved Industry Standard Serial 12-Bit Multiplying DACs; Package: SO; Pins: 16; Temperature Range: -40°C to 85°C;
| 型号： | LTC8143FSW#TRPBF |
| 厂家： | 
Linear |
| 描述： | LTC8143 - Improved Industry Standard Serial 12-Bit Multiplying DACs; Package: SO; Pins: 16; Temperature Range: -40°C to 85°C |
| 文件： | 总8页 (文件大小：219K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC7543/LTC8143
Improved Industry Standard
Serial 12-Bit Multiplying DACs
U
FEATURES
DESCRIPTION
The LTC®7543/LTC8143 are serial-input 12-bit multiply-
ingdigital-to-analogconverters(DACs).Theyaresuperior
pin compatible replacements for the AD7543 and
DAC-8143. Improvements include better accuracy, better
stability over temperature and supply variations, lower
sensitivity to output amplifier offset, tighter timing speci-
fications and lower output capacitance.
■
Improved Direct Replacement for AD7543
and DAC-8143
Low Cost
DNL and INL Over Temperature: ±0.5LSB
Easy, Fast and Flexible Serial Interface
■
■
■
■
Daisy-Chain 3-Wire Interface for Multiple DAC
Systems (LTC8143)
■
1LSB Maximum Gain Error Over Temperature
An easy-to-use serial interface includes an asynchronous
CLEARinputforsystemsrequiringinitializationtoaknown
state. The LTC8143 has a serial data output to allow daisy-
chaining multiple DACs on a 3-wire interface bus.
Eliminates Adjustment
■
Asynchronous Clear Input for Initialization
■
Four-Quadrant Multiplication
Low Power Consumption
16-Pin PDIP and SO Packages
■
■
These DACs are extremely versatile. They can be used for
2-quadrant and 4-quadrant multiplying, programmable
gain and single supply applications, such as noninverting
voltage output and biased or offset ground mode.
U
APPLICATIONS
■
Process Control and Industrial Automation
Remote Microprocessor-Controlled Systems
Digitally Controlled Filters and Power Supplies
Programmable Gain Amplifiers
Automatic Test Equipment
Parts are available in 16-pin PDIP and SO packages and
are specified over the extended industrial temperature
range, –40°C to 85°C.
■
■
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATION
Multiplying DAC Has Easy 3-Wire Serial Interface
Integral Nonlinearity Over Temperature
V
1.0
IN
5V
14
15
16
R
FB
OUT 1
33pF
0.5
V
V
DD
REF
–
1
2
4
7
5
T
A
= 85°C
T = 25°C
A
STB1
SRI
CLOCK
DATA
LOAD
LTC7543
LTC8143
LT®1097
+
V
OUT
0
–0.5
–1.0
LD1
OUT 2
AGND
T
= –40°C
DGND
12
A
3
7543/8143 TA01
0
512
1536 2048 2560 3072
3584
4095
1024
DIGITAL INPUT CODE
7543/8143 TA02
1
LTC7543/LTC8143
W W U W
U
W U
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER INFORMATION
VDD to AGND .............................................. –0.5V to 7V
VDD to DGND .............................................. –0.5V to 7V
AGND to DGND............................................ VDD + 0.5V
DGND to AGND............................................ VDD + 0.5V
Digital Inputs to DGND ............... –0.5V to (VDD + 0.5V)
TOP VIEW
ORDER PART
NUMBER
1
2
3
4
5
6
7
8
R
V
16
15
14
13
12
11
OUT 1
OUT 2
AGND
STB1
LD1
FB
REF
DD
LTC7543GKN
LTC7543KN
LTC7543GKSW
LTC7543KSW
LTC8143EN
LTC8143FN
LTC8143ESW
LTC8143FSW
V
CLR
V
OUT1, VOUT2 to AGND ................. –0.5V to (VDD + 0.5V)
DGND
STB4
VREF to AGND, DGND............................................ ±25V
VRFB to AGND, DGND ........................................... ±25V
Maximum Junction Temperature .......................... 150°C
Operating Temperature Range ............... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
NC (LTC7543)
SRO (LTC8143)
SRI
10 STB3
LD2
STB2
9
N PACKAGE
16-LEAD PDIP
SW PACKAGE
16-LEAD PLASTIC SO WIDE
TJMAX = 150°C, θJA = 100°C/ W (N)
TJMAX = 150°C, θJA = 130°C/ W (SW)
Consult factory for Military grade parts.
ACCURACY CHARACTERISTICS – LTC7543
VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND =0V, TA = TMIN to TMAX, unless otherwise specified.
LTC7543GK
MIN TYP
LTC7543K
SYMBOL PARAMETER
CONDITIONS
MAX
MIN
TYP
MAX
UNITS
Bits
Resolution
●
●
12
12
INL
Integral Nonlinearity
(Note 1)
±0.5
±0.5
±0.5
±0.5
LSB
(Relative Accuracy)
Differential Nonlinearity
Gain Error
DNL
GE
Guaranteed Monotonic, T to T
●
LSB
MIN
MAX
(Note 2)
T = 25°C
±1
±1
±2
±2
LSB
LSB
A
T
MIN
to T
●
●
MAX
Gain Temperature Coefficient (Note 3)
1
5
1
5
ppm/°C
(∆Gain/∆Temp)
I
Output Leakage Current
(Note 4)
T = 25°C
±1
±10
±1
±10
nA
nA
LKG
A
T
MIN
to T
●
MAX
Zero-Scale Error
T = 25°C
±0.006
±0.06
±0.006
±0.06
LSB
LSB
A
T
MIN
to T
●
●
MAX
PSRR
Power Supply Rejection Ratio
V
DD
= 5V ±5%
±0.0001 ±0.002
±0.0001 ±0.002
%/%
2
LTC7543/LTC8143
ACCURACY CHARACTERISTICS – LTC8143
VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified.
LTC8143E
LTC8143F
TYP
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
MAX
UNITS
Bits
Resolution
●
●
12
12
INL
Integral Nonlinearity
(Note 1)
±0.5
±0.5
±1
±1
LSB
(Relative Accuracy)
Differential Nonlinearity
Gain Error
DNL
GE
Guaranteed Monotonic, T
(Note 2)
to T
●
LSB
MIN
MAX
T = 25°C
±1
±2
±2
±2
LSB
LSB
A
T
to T
●
●
MIN
MAX
Gain Temperature Coefficient (Note 3)
1
5
1
5
ppm/°C
(∆Gain/∆Temp)
I
Output Leakage Current
Zero-Scale Error
(Note 4)
T = 25°C
±5
±25
±5
±25
nA
nA
LKG
A
T
MIN
to T
●
MAX
T = 25°C
±0.03
±0.15
±0.03
±0.15
LSB
LSB
A
T
MIN
to T
●
●
MAX
PSRR
Power Supply Rejection Ratio
V
DD
= 5V ±5%
±0.0001 ±0.002
±0.0001 ±0.002
%/%
ELECTRICAL CHARACTERISTICS – LTC7543/LTC8143
VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified.
LTC7543/LTC8143
ALL GRADES
SYMBOL PARAMETER
Reference Input
CONDITIONS
(Note 5)
MIN
TYP
MAX
UNITS
kΩ
R
REF
V
REF
Input Resistance
●
8
11
15
AC Performance (Note 3)
Output Current Settling Time
(Notes 6, 7)
●
●
●
●
●
0.25
0.8
1
2
µs
Multiplying Feedthrough Error
Digital-to-Analog Glitch Energy
Total Harmonic Distortion
V
= ±10V, 10kHz Sinewave
mV
P-P
REF
(Notes 6, 8)
(Note 9)
2
20
–92
13
nV-sec
dB
THD
–108
Output Noise Voltage Density
(Note 10)
nV/√Hz
Analog Outputs (Note 3)
Output Capacitance
C
DAC Register Loaded to All 1s
DAC Register Loaded to All 0s
C
C
●
●
60
20
90
60
pF
pF
OUT
OUT1
OUT2
C
OUT1
C
OUT2
●
●
30
50
60
90
pF
pF
Digital Inputs
V
V
Digital Input High Voltage
Digital Input Low Voltage
Digital Input Current
●
●
●
●
2.4
V
V
IH
IL
0.8
±1
8
I
V
= 0V to V
DD
0.001
µA
pF
IN
IN
C
IN
Digital Input Capacitance
(Note 3), V = 0V
IN
Digital Outputs: SRO (LTC8143 Only)
V
OH
V
OL
Digital Output High
Digital Output Low
I
I
= –200µA
●
●
4
V
V
OH
OL
= 1.6mA
0.4
3
LTC7543/LTC8143
ELECTRICAL CHARACTERISTICS – LTC7543/LTC8143
VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified.
LTC7543/LTC8143
ALL GRADES
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Timing Characteristics (Note 3)
t
t
t
t
t
t
t
t
t
Serial Input to Strobe Setup Time
(t = 80ns)
STB1 Used as the Strobe
STB2 Used as the Strobe
STB3 Used as the Strobe
STB4 Used as the Strobe
STB1 Used as the Strobe
STB2 Used as the Strobe
STB3 Used as the Strobe
STB4 Used as the Strobe
●
●
●
●
●
●
●
●
●
●
50
20
0
5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS1
DS2
DS3
DS4
DH1
DH2
DH3
DH4
SRI
STB
–5
–30
–30
10
0
Serial Input to Strobe Hold Time
(t = 80ns)
30
50
80
80
80
80
STB
25
55
55
Serial Input Data Pulse Width
Strobe Pulse Width
t
t
, t
, t
,
,
(Note 11)
(Note 12)
STB1 STB2
STB3 STB4
t
t
, t
, t
Strobe Pulse Width
Load Pulse Width
●
80
ns
STB1 STB2
STB3 STB4
t
t
, t
●
●
140
0
ns
ns
LD1 LD2
LSB Strobed into Input Register
to Load DAC Register Time
ASB
t
Clear Pulse Width
●
80
ns
CLR
SRO Timing Characteristics (LTC8143 Only)
t
STB2, STB3, STB4 Strobe to SRO
Propagation Delay
C = 50pF
●
●
220
150
120
80
ns
ns
PD
L
t
STB1 to SRO Propagation Delay
C = 50pF
L
PD1
Power Supply
V
Supply Voltage
Supply Current
●
4.75
5
5.25
V
DD
I
Digital Inputs = 0V or V
●
●
0.1
2
mA
mA
DD
DD
Digital Inputs = V or V
IH
IL
The
● denotes specifications which apply over the full operating
Note 8: V = 0V. DAC register contents changed from all 0s to all 1s or
from all 1s to all 0s.
REF
temperature range.
Note 1: ±0.5LSB = ±0.012% of full scale.
Note 2: Using internal feedback resistor.
Note 3: Guaranteed by design, not subject to test.
Note 9: V = 6V
at 1kHz. DAC register loaded with all 1s.
RMS
REF
Note 10: Calculation from e = √4KTRB where: K = Boltzmann constant
(J/K°); R = resistance (Ω); T = resistor 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.
n
Note 4: I
with DAC register loaded with all 0s or I
with DAC
OUT2
OUT1
register loaded with all 1s.
Note 5: Typical temperature coefficient is 100ppm/°C.
Note 6: OUT 1 load = 100Ω in parallel with 13pF.
Note 7: To 0.01% for a full-scale change, measured from falling edge of
LD1 or LD2.
4
LTC7543/LTC8143
W
BLOCK DIAGRAM
20k
20k
20k
V
R
FB
15
16
REF
10k
40k
40k
40k
40k
40k
40k
40k
1
2
3
OUT 1
OUT 2
AGND
V
14
DD
DECODER
CLR 13
BIT 1
(MSB)
BIT 2
BIT 3
DAC REGISTER
BIT 4
BIT 12
(LSB)
CLR
5
9
LD1
LD2
LOAD
4
8
STB1
STB2
CLK
OUT
INPUT 12-BIT SHIFT REGISTER
SRI
IN
7
STB3 10
STB4
11
SRO
6
7543/8143 BD
LTC8143 ONLY
12
DGND
W U
W
TI I G DIAGRA
t
t
t
t
t
DH1
DS1
DS2
DS3
DS4
t
t
t
t
STB1
STB2
STB3
STB4
t
t
t
DH2
DH3
DH4
STROBE INPUT
STB1, STB2, STB4
(INVERT FOR STB3)
t
t
t
t
STB1
STB2
STB3
STB4
t
SRI
BIT 1
MSB
BIT 12
LSB
PREVIOUS
SRI
BIT 2
BIT 11
WORD
t
ASB
t
t
LD1, LD2
LD1
LD2
t
t
PD
PD1
BIT 1 (MSB)
PREVIOUS WORD
SRO
(LTC8143 ONLY)
BIT 1 (MSB)
CURRENT WORD
BIT 12
LSB
BIT 2
BIT 3
7543/8143 TD01
5
LTC7543/LTC8143
TRUTH TABLES
Table 1. LTC7543/LTC8143 Input Register
Table 2. LTC7543/LTC8143 DAC Register
CONTROL INPUTS
CONTROL INPUTS
Input Register Operation
STB1 STB2 STB3 STB4 (LTC8143: SRO Operation)
CLR LD1 LD2
DAC Register Operation
0
1
1
0
0
0
Serial Data Bit on SRI Loaded into Input
Register, MSB First
(LTC8143: Data Bit or SRI Appears on
SRO Pin After 12 Clocked Bits)
0
X
X
Reset DAC Register to All 0s (Asynchronous
Operation; No Effect on Input Register)
0
0
0
0
0
1
1
1
X
X
1
No DAC Register Operation
1
1
X
X
X
X
1
X
X
X
X
0
X
X
X
X
1
No Input Register Operation
(LTC8143: No SRO Operation)
1
0
0
Load DAC Register with the Contents of Input
Register
U
TYPICAL APPLICATIONS
Unipolar Operation (2-Quadrant Multiplication)
V
REF
–10V TO 10V
5V
0.1µF
13
CLR
14
15
16
10
4
7
5
6
9
8
11
33pF
R
V
V
REF
STB3
STB1
SRI
DD
FB
–
1
2
µP
OUT 1
OUT 2
LTC7543
LTC8143
V
LD1
OUT
LT1097
0V TO –V
SRO (LTC8143)
LD2
REF
+
STB2
STB4
DGND
12
AGND
3
TO NEXT DAC
7543/8143 TA03
FOR DAISY-CHAINING
(LTC8143)
Unipolar Binary Code Table
DIGITAL INPUT
BINARY NUMBER IN
DAC REGISTER
ANALOG OUTPUT
V
OUT
MSB
1111
1000
0000
0000
LSB
1111
0000
0001
0000
1111
0000
0000
0000
–V
–V
–V
0V
(4095/4096)
REF
REF
REF
(2048/4096) = –V /2
REF
(1/4096)
6
LTC7543/LTC8143
U
TYPICAL APPLICATIONS
Bipolar Operation (4-Quadrant Multiplication)
V
REF
–10V TO 10V
5V
R2
20k
0.1µF
14
15
16
R3
20k
33pF
V
DD
V
REF
R
FB
–
1
2
R1
10k
OUT 1
OUT 2
(LOGIC INPUTS
OMITTED FOR
CLARITY)
1/2
LT1112
–
LTC7543
LTC8143
1/2
LT 1112
+
V
OUT
+
DGND
12
AGND
3
7543/8143 TA04
Bipolar Offset Binary Code Table
DIGITAL INPUT
BINARY NUMBER IN
DAC REGISTER
ANALOG OUTPUT
V
OUT
MSB
LSB
1111
0001
0000
1111
0000
1111
1000
1000
0111
0000
1111
0000
0000
1111
0000
V
V
(2047/2048)
(1/2048)
REF
REF
0V
–V (1/2048)
REF
–V (2048/2048) = –V
REF
REF
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
7
LTC7543/LTC8143
PACKAGE DESCRIPTION
U
Dimension in inches (millimeters) unless otherwise noted.
N Package
16-Lead Plastic DIP
0.770*
(19.558)
MAX
0.300 – 0.325
0.130 ± 0.005
0.045 – 0.065
(7.620 – 8.255)
(3.302 ± 0.127)
(1.143 – 1.651)
14
12
10
9
15
13
11
16
0.015
(0.381)
MIN
0.255 ± 0.015*
(6.477 ± 0.381)
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.025
2
1
3
4
6
8
5
7
0.325
–0.015
0.125
(3.175)
MIN
0.045 ± 0.015
(1.143 ± 0.381)
0.018 ± 0.003
(0.457 ± 0.076)
+0.635
8.255
N16 0694
(
)
–0.381
0.100 ± 0.010
(2.540 ± 0.254)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
S Package
16-Lead Plastic SOL
0.398 – 0.413
(10.109 – 10.490)
(NOTE 2)
0.291 – 0.299
15 14
12
10
11
9
16
13
(7.391 – 7.595)
(NOTE 2)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.005
(0.127)
RAD MIN
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.394 – 0.419
(10.007 – 10.643)
NOTE 1
0.050
(1.270)
TYP
0.004 – 0.012
(0.102 – 0.305)
0.009 – 0.013
(0.229 – 0.330)
NOTE 1
0.014 – 0.019
0.016 – 0.050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
2
3
5
7
8
1
4
6
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS.
SOL16 0392
2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1257
Complete Serial I/O V
12-Bit DAC
5V to 15V Single Supply in 8-Pin SO and PDIP
3V/5V Single Supply in 8-Pin SO and PDIP
12-Bit Wide Input
OUT
LTC1451/LTC1452/LTC1453 Complete Serial I/O V
12-Bit DACs
OUT
LTC7541A
LTC8043
Parallel I/O Mulitplying 12-Bit DAC
Serial Mulitplying 12-Bit DAC
8-Pin SO and PDIP
LT/GP 0695 10K • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
8
●
●
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
LINEAR TECHNOLOGY CORPORATION 1995
相关型号：
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