參數(shù)資料
型號： DC1546A
廠商： Linear Technology
文件頁數(shù)： 3/28頁
文件大?。?/td> 0K
描述： BOARD DAC LTC2754-16
軟件下載： QuikEval System
設(shè)計資源： DC1546A Design Files
DC1546A Schematic
標(biāo)準(zhǔn)包裝： 1
系列： QuikEval™, SoftSpan™
DAC 的數(shù)量： 4
位數(shù)： 16
數(shù)據(jù)接口： 串行，SPI?
設(shè)置時間： 2µs
DAC 型： 電流
已供物品： 板
已用 IC / 零件： LTC2754-16
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LTC2754AIUKG-16#TRPBF-ND - IC DAC 16BIT QUAD IOUT 52-QFN
LTC2754ACUKG-16#TRPBF-ND - IC DAC 16BIT QUAD IOUT 52-QFN
LTC2754BIUKG-16#PBF-ND - IC DAC 16BIT QUAD IOUT 52-QFN
LTC2754BCUKG-16#PBF-ND - IC DAC 16BIT QUAD IOUT 52-QFN
LTC2754AIUKG-16#PBF-ND - IC DAC 16BIT QUAD IOUT 52-QFN
LTC2754ACUKG-16#PBF-ND - IC DAC 16BIT QUAD IOUT 52-QFN
LTC2754
11
2754f
BLOCK DIAGRAM
DAC B
16-BIT WITH
SPAN SELECT
16
3
DATA REGISTERS
SPAN REGISTERS
INPUT REG
16
3
DATA REGISTERS
INPUT REG
SPAN REGISTERS
DAC REG
39
40
41
42
43
44
45
38
46
21
29
22
23
24
ROFSB
REFB
RINB
RINC
SROGND
SRO
SCK
SDI
S0
S1
S2
M-SPAN
CS/LD
LDAC
CLR
RFLAG
GEADJB
RCOMB
IOUT1B
IOUT2B
VOSADJB
VOSADJC
GEADJC
RFBB
IOUT1C
RFBC
ROFSC
RCOMC
REFC
IOUT2C
DAC C
16-BIT WITH
SPAN SELECT
25
26
27
28
36
7
6
5
30
31
33
34
35
32
16
3
DATA REGISTERS
SPAN REGISTERS
DAC REG
INPUT REG
16
3
DATA REGISTERS
INPUT REG
SPAN REGISTERS
DAC REG
2
1
52
51
50
49
48
3
47
20
12
19
18
17
ROFSA
REFA
RINA
RIND
GEADJA
RCOMA
IOUT1A
IOUT2A
VOSADJA
VOSADJD
GEADJD
RFBA
IOUT1D
RFBD
ROFSD
RCOMD
REFD
IOUT2D
16
15
14
13
DAC A
16-BIT WITH
SPAN SELECT
DAC D
16-BIT WITH
SPAN SELECT
POWER-ON
RESET
9
GND
4, 11, 37
8
VDD
10
INPUT REG
DAC REG
DAC B
16-BIT WITH
SPAN SELECT
CONTROL AND READBACK LOGIC
2754 BD
LTC2754-16
2.56M
20k
ROFSA (Pin 50): Bipolar Offset Network for DAC A. This
pin provides the translation of the output voltage range for
bipolar spans. Accepts up to ±15V; for normal operation
tie to the positive reference voltage at RINA (Pin 2). The
impedance looking into this pin is 20k to ground.
REFA (Pin 51): Inverted Reference Voltage for DAC A, with
internal connection to the reference inverting resistor. The
20k resistor is connected internally from REFA to RCOMA.
For normal operation tie this pin to the output of reference
inverting amplier (see Typical Applications). Typically –5V;
accepts up to ±15V. The impedance looking into this pin
is 10k to ground (RINA and RCOMA oating).
RCOMA (Pin 52): Center Tap Point for Reference Amplier
Inverting Resistors. The 20k reference inverting resistors
are connected internally from RINA to RCOMA and from
RCOMA to REFA, respectively (see Block Diagram). For
normal operation tie RCOMA to the negative input of external
reference inverting amplier (see Typical Applications).
Exposed Pad (Pin 53): Ground. The Exposed Pad must
be soldered to the PCB.
PIN FUNCTIONS
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