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PDF LTC1599 Data sheet ( Hoja de datos )
| Número de pieza | LTC1599 | |
| Descripción | 16-Bit Byte Wide/ Low Glitch Multiplying DAC with 4-Quadrant Resistors | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LTC1599
16-Bit Byte Wide,
Low Glitch Multiplying DAC with
4-Quadrant Resistors
FEATURES
s True 16-Bit Performance over Industrial
Temperature Range
s DNL and INL: 1LSB Max
s On-Chip 4-Quadrant Resistors Allow Precise
0V to 10V, 0V to – 10V or ±10V Outputs
s 2µs Settling Time to 0.0015% (with LT®1468)
s Asynchronous Clear Pin Resets to Zero Scale
or Midscale
s Glitch Impulse: 1.5nV-s
s 24-Lead SSOP Package
s Low Power Consumption: 10µW Typ
s Power-On Reset to Zero Scale or Midscale
s 2-Byte Parallel Digital Interface
U
APPLICATIO S
s Process Control and Industrial Automation
s Direct Digital Waveform Generation
s Software-Controlled Gain Adjustment
s Automatic Test Equipment
DESCRIPTIO
The LTC®1599 is a 2-byte parallel input 16-bit multiplying
current output DAC that operates from a single 5V supply.
INL and DNL are accurate to 1LSB over the industrial
temperature range in both 2- and 4-quadrant multiplying
modes. True 16-bit 4-quadrant multiplication is achieved
with on-chip 4-quadrant multiplication resistors.
The LTC1599 is available in 24-pin PDIP and SSOP packages
and is specified over the commercial and industrial tempera-
ture ranges. The device includes an internal deglitcher circuit
that reduces the glitch impulse to 1.5nV-s (typ). The asyn-
chronous CLR pin resets the LTC1599 to zero scale when the
CLVL pin is at a logic low and to midscale when the CLVL pin
is at a logic high.
For a full 16-bit wide parallel interface current output DAC,
refer to the LTC1597 data sheet. For serial interface 16-bit
current output DACs, refer to the LTC1595/LTC1596 data
sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
A 16-Bit, 4-Quadrant Multiplying DAC with a Minimum of External Components
VREF
–VREF
3+
LT1468
2–
15pF
6
5V
0.1µF
43
R1 RCOM
2 1 20 5
R2 REF VCC ROFS
6
RFB
8
DATA
INPUTS
14 TO 18,
21 TO 23
R1
R2
LTC1599
13
MLBYTE
MLBYTE
WR LD CLR CLVL
WR
LD
CLR
CLVL
12 11 24 10
ROFS RFB
IOUT1 7
16-BIT DAC
IOUT2F 8
IOUT2S 9
19
DGND
15pF
2–
LT1468
3+
VREF
6
VOUT =
–VREF
1599 TA01
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
0
Integral Nonlinearity
16384 32768 49152
DIGITAL INPUT CODE
65535
1599 G08
1
1 page  
LTC1599
TYPICAL PERFOR A CE CHARACTERISTICS
Integral Nonlinearity
vs Reference Voltage
in Unipolar Mode
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
–10 – 8 – 6 – 4 – 2 0 2 4 6
REFERENCE VOLTAGE (V)
8 10
1599 G10
Integral Nonlinearity
vs Reference Voltage
in Bipolar Mode
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
–10 – 8 – 6 – 4 – 2 0 2 4 6 8 10
REFERENCE VOLTAGE (V)
1599 G11
Differential Nonlinearity
vs Reference Voltage
in Unipolar Mode
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
–10 – 8 – 6 – 4 – 2 0 2 4 6
REFERENCE VOLTAGE (V)
8 10
1599 G12
Differential Nonlinearity
vs Reference Voltage
in Bipolar Mode
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
–10 – 8 – 6 – 4 – 2 0 2 4 6
REFERENCE VOLTAGE (V)
8 10
1599 G13
Integral Nonlinearity vs
Suppy Voltage in Bipolar Mode
2.0
1.5
1.0
0.5
0
VREF = 10V
– 0.5
VREF = 2.5V
–1.0
VREF = 10V
VREF = 2.5V
–1.5
– 2.0
2
3456
SUPPLY VOLTAGE (V)
7
1599 G15
Integral Nonlinearity vs
Suppy Voltage in Unipolar Mode
1.0
0.8
0.6
0.4 VREF = 10V
0.2 VREF = 2.5V
0 VREF = 10V
– 0.2
VREF = 2.5V
– 0.4
– 0.6
– 0.8
– 1.0
2
3 456
SUPPLY VOLTAGE (V)
7
1599 G14
Differential Nonlinearity vs
Suppy Voltage in Unipolar Mode
1.0
0.8
0.6
0.4
0.2
VREF = 10V
VREF = 2.5V
0
– 0.2
VREF = 10V
– 0.4 VREF = 2.5V
– 0.6
– 0.8
– 1.0
2
3456
SUPPLY VOLTAGE (V)
7
1599 G16
5
5 Page 
LTC1599
APPLICATIONS INFORMATION
5V
VREF
0.1µF
4 3 21
20 5
R1
RCOM R2 REF
VCC ROFS
6
RFB
33pF
8
DATA
INPUTS
14 TO 18,
21 TO 23
R1 R2
LTC1599
13
MLBYTE
MLBYTE
WR LD CLR CLVL
WR 12 11 24 10
LD
CLR
CLVL
ROFS RFB
IOUT1 7
2–
16-BIT DAC
LT1001
IOUT2F 8 3 +
IOUT2S 9
DGND 19
6
Unipolar Binary Code Table
DIGITAL INPUT
BINARY NUMBER
IN DAC REGISTER
MSB LSB
1111 1111 1111 1111
1000 0000 0000 0000
0000 0000 0000 0001
0000 0000 0000 0000
ANALOG OUTPUT
VOUT
–VREF (65,535/65,536)
–VREF (32,768/65,536) = –VREF/ 2
–VREF (1/65,536)
0V
VOUT
0V TO –VREF
1599 F01
Figure 1. Unipolar Operation (2-Quadrant Multiplication) VOUT = 0V to – VREF
VREF
4
R1
5+
1/2 LT1112
6–
7
5V
0.1µF
3
RCOM
2 1 20 5
R2 REF VCC ROFS
6
RFB
33pF
8 R1 R2
DATA
INPUTS
LTC1599
14 TO 18,
21 TO 23
13
MLBYTE
MLBYTE
WR LD CLR CLVL
WR
LD
CLR
CLVL
12 11 24 10
ROFS RFB
IOUT1 7
2–
16-BIT DAC
1/2 LT1112
IOUT2F 8 3 +
IOUT2S 9
19
DGND
Unipolar Binary Code Table
DIGITAL INPUT
BINARY NUMBER
IN DAC REGISTER
MSB LSB
1111 1111 1111 1111
1000 0000 0000 0000
0000 0000 0000 0001
0000 0000 0000 0000
ANALOG OUTPUT
VOUT
VREF (65,535/65,536)
VREF (32,768/65,536) = VREF/ 2
VREF (1/65,536)
0V
1
VOUT
0V TO VREF
1599 F02
Figure 2. Noninverting Unipolar Operation (2-Quadrant Multiplication) VOUT = 0V to VREF
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LTC1599.PDF ] | |
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