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參數資料
| 型號： | LTC1661IMS8#TR |
| 廠商： | Linear Technology |
| 文件頁數： | 1/14頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 10BIT DUAL MICROPWR 8MSOP |
| 標準包裝： | 2,500 |
| 設置時間： | 30µs |
| 位數： | 10 |
| 數據接口： | 串行 |
| 轉換器數目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 260µW |
| 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） |
| 供應商設備封裝： | 8-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸出數目和類型： | 2 電壓，單極 |
| 采樣率（每秒）： | * |
LTC1661
1
1661fa
BLOCK DIAGRAM
FEATURES
DESCRIPTION
Micropower Dual
10-Bit DAC in MSOP
The LTC1661 integrates two accurate, serially address-
able, 10-bit digital-to-analog converters (DACs) in a single
tiny MS8 package. Each buffered DAC draws just 60A
total supply current, yet is capable of supplying DC output
currents in excess of 5mA and reliably driving capacitive
loads up to 1000pF. Sleep mode further reduces total
supply current to a negligible 1A.
Linear Technology’s proprietary, inherently monotonic
voltage interpolation architecture provides excellent lin-
earity while allowing for an exceptionally small external
form factor. The double-buffered input logic provides
simultaneous update capability and can be used to write
to either DAC without interrupting sleep mode.
Ultralow supply current, power-saving sleep mode and
extremely compact size make the LTC1661 ideal for
battery-powered applications, while its straightforward
usability, high performance and wide supply range make
it an excellent choice as a general purpose converter.
For additional outputs and even greater board density,
please refer to the LTC1660 micropower octal DAC for
10-bit applications. For 8-bit applications, please consult
the LTC1665 micropower octal DAC.
Differential Nonlinearity (DNL)
APPLICATIONS
n
Tiny: Two 10-Bit DACs in an 8-Lead MSOP—
Half the Board Space of an SO-8
n
Micropower: 60A per DAC
Sleep Mode: 1A for Extended Battery Life
n
Rail-to-Rail Voltage Outputs Drive 1000pF
n
Wide 2.7V to 5.5V Supply Range
n
Double Buffered for Independent or Simultaneous
DAC Updates
n
Reference Range Includes Supply for Ratiometric
0V-to-VCC Output
n
Reference Input Has Constant Impedance over All
Codes (260kΩ Typ)—Eliminates External Buffers
n
3-Wire Serial Interface with Schmitt Trigger Inputs
n
Differential Nonlinearity: ≤±0.75LSB Max
n
Mobile Communications
n
Digitally Controlled Amplifiers and Attenuators
n
Portable Battery-Powered Instruments
n
Automatic Calibration for Manufacturing
n
Remote Industrial Devices
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
CS/LD
1661 BD
1
4
10-BIT
DAC A
10-BIT
DAC B
ADDRESS
DECODER
CONTROL
LOGIC
SHIFT REGISTER
SCK
2
DIN
REF
3
VOUT A
8
5
GND
7
VCC
VOUT B
6
LATCH
CODE
0
256
512
768
1023
LSB
1661 G02
0.75
–0.75
0.60
0.40
0.20
0
–0.20
–0.40
–0.60
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