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MAX530 PDF 데이터시트 ( Data , Function )

부품번호 MAX530 기능
기능 +5V / Low-Power / Parallel-Input / Voltage-Output / 12-Bit DAC
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MAX530 데이터시트, 핀배열, 회로
19-0168; Rev 3; 7/95
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
_______________General Description
The MAX530 is a low-power, 12-bit, voltage-output digi-
tal-to-analog converter (DAC) that uses single +5V or
dual ±5V supplies. This device has an on-chip voltage
reference plus an output buffer amplifier. Operating cur-
rent is only 250µA from a single +5V supply, making it
ideal for portable and battery-powered applications. In
addition, the SSOP (Shrink-Small-Outline-Package) mea-
sures only 0.1 square inches, using less board area than
an 8-pin DIP. 12-bit resolution is achieved through laser
trimming of the DAC, op amp, and reference. No further
adjustments are necessary.
Internal gain-setting resistors can be used to define a
DAC output voltage range of 0V to +2.048V, 0V to
+4.096V, or ±2.048V. Four-quadrant multiplication is pos-
sible without the use of external resistors or op amps. The
parallel logic inputs are double buffered and are compati-
ble with 4-bit, 8-bit, and 16-bit microprocessors. For DACs
with similar features but with a serial data interface, refer
to the MAX531/MAX538/MAX539 data sheet.
________________________Applications
Battery-Powered Data-Conversion Products
Minimum Component-Count Analog Systems
Digital Offset/Gain Adjustment
Industrial Process Control
Arbitrary Function Generators
Automatic Test Equipment
Microprocessor-Controlled Calibration
________________Functional Diagram
____________________________Features
o Buffered Voltage Output
o Internal 2.048V Voltage Reference
o Operates from Single +5V or Dual ±5V Supplies
o Low Power Consumption:
250µA Operating Current
40µA Shutdown-Mode Current
o SSOP Package Saves Space
o Relative Accuracy: ±1/2 LSB Max Over
Temperature
o Guaranteed Monotonic Over Temperature
o 4-Quadrant Multiplication with No External
Components
o Power-On Reset
o Double-Buffered Parallel Logic Inputs
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
ERROR
(LSB)
MAX530ACNG 0°C to +70°C 24 Narrow Plastic DIP ±1/2
MAX530BCNG 0°C to +70°C 24 Narrow Plastic DIP ±1
MAX530ACWG
MAX530BCWG
MAX530ACAG
MAX530BCAG
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
24 Wide SO
24 Wide SO
24 SSOP
24 SSOP
±1/2
±1
±1/2
±1
MAX530BC/D 0°C to +70°C Dice*
±1
Ordering Information continued on last page.
* Dice are tested at TA = +25°C, DC parameters only.
__________________Pin Configuration
REFGND 17
AGND 14
CLR 15
A0 8
A1 9
CS 11
WR 10
LDAC 16
REFOUT
18
REFIN ROFS
13 22
2.048V
REFERENCE
POWER-ON
RESET
DAC LATCH
MAX530
12-BIT DAC LATCH
21 RFB
20 VOUT
23 VDD
12 DGND
19
VSS
CONTROL
LOGIC
NBL
INPUT
LATCH
NBM
INPUT
LATCH
NBH
INPUT
LATCH
24 1 2 3 4 5 6 7
D0/D8 D2/D10 D4 D6
D1/D9 D3/D11 D5 D7
TOP VIEW
D1/D9 1
D2/D10 2
D3/D11 3
D4 4
D5 5
D6 6
D7 7
A0 8
A1 9
WR 10
CS 11
DGND 12
MAX530
24 D0/D8
23 VDD
22 ROFS
21 RFB
20 VOUT
19 VSS
18 REFOUT
17 REFGND
16 LDAC
15 CLR
14 AGND
13 REFIN
DIP/SO/SSOP
________________________________________________________________ Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.




MAX530 pdf, 반도체, 판매, 대치품
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies
(VDD = 5V ±10%, VSS = -5V ±10%, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT,
CREFOUT = 33µF, RL = 10k, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
STATIC PERFORMANCE
Resolution
Relative Accuracy
Differential Nonlinearity
Bipolar Offset Error
Bipolar Offset
Temperature Coefficient
N
INL
DNL
VOS
TCVOS
VDD = 5V, VSS = -5V
MAX530AC/AE
MAX530BC/BE
Guaranteed monotonic
VDD = 5V, VSS = -5V MAX530_C/E
12 Bits
±0.5
±1.5
LSB
±1 LSB
0 ±8 LSB
3 ppm/°C
Bipolar Offset-Error
Power-Supply Rejection
PSRR
4.5V VDD 5.5V
-5.5V VSS -4.5V (Note 3)
0.4 1 LSB/V
Gain Error
MAX530_C/E
±1 LSB
Gain-Error Temperature Coefficient TC
1 ppm/°C
Gain-Error Power-Supply Rejection PSRR 4.5V VDD 5.5V, -5.5V VSS -4.5V (Note 3)
0.4 1 LSB/V
DAC VOLTAGE OUTPUT (VOUT)
Output Voltage Range
Resistive Load
VOUT = 2V, load regulation ±1LSB
VSS + 0.4
2
VDD - 0.4
V
k
DC Output Impedance
0.2
Short-Circuit Current
ISC
20 mA
REFERENCE INPUT (REFIN)
Reference Input Range
Reference Input Resistance
Code dependent, minimum at code 555hex
VSS + 2
40
VDD - 2
V
k
Reference Input Capacitance
Code dependent (Note 4)
10 50 pF
AC Feedthrough
(Note 5)
-80 dB
REFERENCE OUTPUT (REFOUT)—Specifications are identical to those under Single +5V Supply
DYNAMIC PERFORMANCE—Specifications are identical to those under Single +5V Supply
DIGITAL INPUTS (D0-D7, LDAC, CLR, CS, WR, A0, A1)—Specifications are identical to those under Single +5V Supply
POWER SUPPLIES
Positive Supply Voltage
VDD (Note 6)
4.5 5.5 V
Negative Supply Voltage
VSS (Note 7)
-5.5 -4.5 V
Positive Supply Current
IDD Outputs unloaded, all digital inputs = 0V or VDD
250 400 µA
Negative Supply Current
ISS Outputs unloaded, all digital inputs = 0V or VDD
150 200 µA
SWITCHING CHARACTERISTICS—Specifications are identical to those under Single +5V Supply
4 _______________________________________________________________________________________

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MAX530 전자부품, 판매, 대치품
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
______________________________________________________________Pin Description
PIN NAME
FUNCTION
1
D1/ D9
D1 Input Dta, when A0 = 0 and A1 = 1, or D9 Input when A0 = A1 = 1*
2
D2/ D10
D2 Input Dta, when A0 = 0 and A1 = 1, or D10 Input when A0 = A1 = 1*
3
D3/ D11
D3 Input Dta, when A0 = 0 and A1 = 1, or D11 (MSB) Input when A0 = A1 =1*
4 D4 D4 Input Dta, or tie to D0 and multiplex when A0 = 1 and A1 = 0*
5 D5 D5 Input Dta, or tie to D1 and multiplex when A0 = 1 and A1 = 0*
6 D6 D6 Input Dta, or tie to D2 and multiplex when A0 = 1 and A1 = 0*
7 D7 D7 Input Dta, or tie to D3 and multiplex when A0 = 1 and A1 = 0*
8
A0
Address Line A0. With A1, used to multiplex 4 of 12 data lines to load low (NBL), middle (NBM),
and high (NBH) 4-bit nibbles. (12 bits can also be loaded as 8+4.)
9
A1
Address Line A1. Set A0 = A1 = 0 for NBL and NBM, A0 = 0 and A1 = 1 for NBL, A0 = 1 and
A1 = 0 for NBM, or A0 = A1 = 1 for NBH. See Table 2 for complete input latch addressing.
10 WR Write Input (active low). Used with CS to load data into the input latch selected by A0 and A1.
11 CS Chip Select (active low). Enables addressing and writing to this chip from common bus lines.
12
DGND
Digital Ground
13
REFIN
Reference Input. Input for the R-2R DAC. Connect an external reference to this pin or a jumper to
REFOUT (pin 18) to use the internal 2.048V reference.
14
AGND
Analog Ground
15
CLR
Clear (active low). A low on CLR resets the DAC latches to all 0s.
16
LDAC
Load DAC Input (active low). Driving this asynchronous input low transfers the contents of the input
latch to the DAC latch and updates VOUT.
17
REFGND
Reference Ground must be connected to AGND when using the internal reference. Connect to VDD
to disable the internal reference and save power.
18 REFOUT Reference Output. Output of the internal 2.048V reference. Tie to REFIN to drive the R-2R DAC.
19 VSS Negative Power Supply. Usually ground for single-supply or -5V for dual-supply operation.
20
VOUT
Voltage Output. Op-amp buffered DAC output.
21 RFB Feedback Pin. Op-amp feedback resistor. Always connect to VOUT.
22
ROFS
Offset Resistor Pin. Connect to VOUT for G = 1, to AGND for G = 2, or to REFIN for bipolar output.
23 VDD Positive Power Supply (+5V)
24
D0/D8
D0 (LSB) Input Dta when A0 = 0 and A1 = 1, or D8 Input when A0 = A1= 1*
* This applies to 4 + 4 + 4 input loading mode. See Table 2 for 8 + 4 input loading mode.
_______________________________________________________________________________________ 7

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