參數(shù)資料
型號(hào): MAX5253ACAP+T
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 5/16頁(yè)
文件大?。?/td> 0K
描述: IC DAC 12BIT QUAD 3V 20-SSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,000
設(shè)置時(shí)間: 16µs
位數(shù): 12
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 4
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 20-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 20-SSOP
包裝: 帶卷 (TR)
輸出數(shù)目和類(lèi)型: 4 電壓,單極;4 電壓,雙極
采樣率(每秒): *
__________Applications Information
Unipolar Output
For a unipolar output, the output voltages and the refer-
ence inputs have the same polarity. Figure 9 shows the
MAX5253 unipolar output circuit, which is also the typi-
cal operating circuit. Table 2 lists the unipolar output
codes.
For rail-to-rail outputs, see Figure 10. This circuit shows
the MAX5253 with the output amplifiers configured with
a closed-loop gain of +2.6 to provide 0V to 3.25V full-
scale range when a 1.25V reference is used.
Bipolar Output
The MAX5253 outputs can be configured for bipolar
operation using Figure 11’s circuit.
VOUT = VREF [(2NB / 4096) - 1]
where NB is the numeric value of the DAC’s binary
input code. Table 3 shows digital codes (offset binary)
and corresponding output voltages for Figure 11’s
circuit.
MAX5253
+3V, Quad, 12-Bit Voltage-Output DAC
with Serial Interface
______________________________________________________________________________________
13
Table 2. Unipolar Code Table
Table 3. Bipolar Code Table
DAC CONTENTS
ANALOG OUTPUT
MSB
LSB
4095
1111
+VREF ( ——— )
4096
2049
1000
0000
0001
+VREF ( ——— )
4096
2048
+VREF
1000
0000
+VREF ( ——— ) = ————
4096
2
2047
0111
1111
+VREF ( ——— )
4096
1
0000
0001
+VREF ( ——— )
4096
0000
0V
DAC CONTENTS
ANALOG OUTPUT
MSB
LSB
2047
1111
+VREF ( ——— )
2048
1
1000
0000
0001
+VREF ( ——— )
2048
1000
0000
0V
1
0111
1111
-VREF ( ——— )
2048
2047
0000
0001
-VREF ( ——— )
2048
0000
-VREF ( ——— ) = -VREF
2048
MAX5253
DAC A
DAC B
DAC C
DAC D
OUTA
FBA
FBB
FBC
FBD
OUTB
OUTC
OUTD
DGND
AGND
REFAB
REFCD
REFERENCE INPUTS
+3.3V
VDD
Figure 9. Unipolar Output Circuit
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