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參數(shù)資料
| 型號(hào)： | LTC1663IMS8#TRPBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 2/12頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC D/A CONV 10BIT R-R 8-MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 設(shè)置時(shí)間： | 30µs |
| 位數(shù)： | 10 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 630µW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 1 電壓，單極 |
| 采樣率（每秒）： | * |
LTC1663
10
1663fd
APPLICATIONS INFORMATION
Offset and linearity are dened and tested over the region
of the DAC transfer function where no output limiting can
occur.
Internal Reference
In applications where a predictable output is required
that is independent of supply voltage, the LTC1663 has a
user-selectable internal reference. Selecting the internal
reference will set the full-scale output voltage to 2.5V. This
can be useful in applications where the supply voltage is
poorly regulated.
Using the LT1460 Micropower Series Reference as a
Power Supply for the LTC1663
In applications where the advantages of using the internal
reference are required but the full-scale range needs to
be greater than 2.5V, an external series reference can be
used. The LT1460 is ideal for use as a power supply for
the LTC1663 and can provide 3V, 3.3V and 5V full-scale
output voltage ranges. The LT1460 provides accuracy, noise
immunity and extended supply range to the LTC1663 when
the LTC1663 is operated ratiometric to VCC. Since both
parts are available in SOT-23 packages, the PC board space
for this application is extremely small. See Figure 2.
Figure 1. Effects of Rail-to-Rail Operation On a DAC Transfer Curve. (a) Overall Transfer Function (b) Effect of Negative
Offset for Codes Near Zero Scale (c) Effect of Positive Full-Scale Error for Input Codes Near Full Scale When VREF = VCC
Figure 2. LT1460 As Power Supply for the LTC1663
1663 F01
INPUT CODE
(b)
OUTPUT
VOLTAGE
NEGATIVE
OFFSET
0V
512
0
1023
INPUT CODE
OUTPUT
VOLTAGE
(a)
VREF = VCC
(c)
INPUT CODE
OUTPUT
VOLTAGE
POSITIVE
FSE
IN
0.1μF
1
5 (4)
1 (1)
2
4 (5)
2 (7)
LTC1663 PIN NUMBERS IN PARENTHESES
REFER TO MSOP PACKAGE
3 (8)
3
3.9V TO 20V
3V
OUT
TO
μP
SCL
1663 F02
VCC
GND
SDA
OUT
LTC1663
0V ≤ VOUT ≤ 3V
GND
LT1460S3-3
0.01μF
+
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