參數資料
型號： LTC1591-1IG
廠商： LINEAR TECHNOLOGY CORP
元件分類： DAC
英文描述： 14-Bit and 16-Bit Parallel Low Glitch Multiplying DACs with 4-Quadrant Resistors
中文描述： PARALLEL, WORD INPUT LOADING, 1 us SETTLING TIME, 14-BIT DAC, PDSO28
封裝： PLASTIC, SSOP-28
文件頁數： 10/20頁
文件大?。?/td> 386K
代理商： LTC1591-1IG
10
LTC1591/LTC1597
PI
FU
CTIO
N
S
U
U
LTC1591
REF (Pin 1):
Reference Input and 4-Quadrant Resistor R2.
Typically
±
10V, accepts up to
±
25V. In 2-Quadrant mode
this is the reference input. In 4-quadrant mode, this pin is
driven by external inverting reference amplifier.
R
COM
(Pin 2):
Center Tap Point of the Two 4-Quadrant
Resistors R1 and R2. Normally tied to the inverting input
of an external amplifier in 4-quadrant operation, otherwise
shorted to the REF pin. See Figures 1a and 2a.
R1 (Pin 3):
4-Quadrant Resistor R1. In 2-quadrant opera-
tion short to the REF pin. In 4-quadrant mode tie to R
OFS
(Pin 4).
R
OFS
(Pin 4):
Bipolar Offset Resistor. Typically swings
±
10V, accepts up to
±
25V. In 2-quadrant operation tie to
R
FB
. In 4-quadrant operation tie to R1.
R
FB
(Pin 5):
Feedback Resistor. Normally tied to the output
of the current to voltage converter op amp. Swings to
±
V
REF
. V
REF
is typically
±
10V.
I
OUT1
(Pin 6):
DAC Current Output. Tie to the inverting
input of the current to voltage converter op amp.
AGND (Pin 7):
Analog Ground. Tie to ground.
LD (Pin 8):
DAC Digital Input Load Control Input. When LD
is taken to a logic high, data is loaded from the input
register into the DAC register, updating the DAC output.
WR (Pin 9):
DAC Digital Write Control Input. When WR is
taken to a logic low, data is loaded from the digital input
pins into the 14-bit wide input register.
DB13 to D2 (Pins 10 to 21):
Digital Input Data Bits.
DGND (Pin 22):
Digital Ground. Tie to ground.
V
CC
(Pin 23):
The Positive Supply Input. 4.5V
≤
V
CC
≥
5.5V.
Requires a bypass capacitor to ground.
DB1, DB0 (Pins 24, 25):
Digital Input Data Bits.
NC (Pins 26, 27):
No Connect.
CLR (Pin 28):
Digital Clear Control Function for the DAC.
When CLR is taken to a logic low, it sets the DAC output
and all internal registers to zero code for the LTC1591 and
midscale code for the LTC1591-1.
LTC1597
REF (Pin 1):
Reference Input and 4-Quadrant Resistor R2.
Typically
±
10V, accepts up to
±
25V. In 2-Quadrant mode
this is the reference input. In 4-quadrant mode, this pin is
driven by external inverting reference amplifier.
R
COM
(Pin 2):
Center Tap Point of the Two 4-Quadrant
Resistors R1 and R2. Normally tied to the inverting input
of an external amplifier in 4-quadrant operation, otherwise
shorted to the REF pin. See Figures 1b and 2b.
R1 (Pin 3):
4-Quadrant Resistor R1. In 2-quadrant opera-
tion short to the REF pin. In 4-quadrant mode tie to R
OFS
(Pin 4).
R
OFS
(Pin 4):
Bipolar Offset Resistor. Typically swings
±
10V, accepts up to
±
25V. In 2-quadrant operation tie to
R
FB
. In 4-quadrant operation tie to R1.
R
FB
(Pin 5):
Feedback Resistor. Normally tied to the output
of the current to voltage converter op amp. Swings to
±
V
REF
. V
REF
is typically
±
10V.
I
OUT1
(Pin 6):
DAC Current Output. Tie to the inverting
input of the current to voltage converter op amp.
AGND (Pin 7):
Analog Ground. Tie to ground.
LD (Pin 8):
DAC Digital Input Load Control Input. When LD
is taken to a logic high, data is loaded from the input
register into the DAC register, updating the DAC output.
WR (Pin 9):
DAC Digital Write Control Input. When WR is
taken to a logic low, data is loaded from the digital input
pins into the 16-bit wide input register.
DB15 to D4 (Pins 10 to 21):
Digital Input Data Bits.
DGND (Pin 22):
Digital Ground. Tie to ground.
V
CC
(Pin 23):
The Positive Supply Input. 4.5V
≤
V
CC
≥
5.5V.
Requires a bypass capacitor to ground.
DB3 to DB0 (Pins 24 to 27):
Digital Input Data Bits.
CLR (Pin 28):
Digital Clear Control Function for the DAC.
When CLR is taken to a logic low, it sets the DAC output
and all internal registers to zero code for the LTC1597 and
midscale code for the LTC1597-1.
相關PDF資料
PDF描述
LTC1591-1IN 14-Bit and 16-Bit Parallel Low Glitch Multiplying DACs with 4-Quadrant Resistors
LTC1591CG 14-Bit and 16-Bit Parallel Low Glitch Multiplying DACs with 4-Quadrant Resistors
LTC1591CN 14-Bit and 16-Bit Parallel Low Glitch Multiplying DACs with 4-Quadrant Resistors
LTC1597-1ACG DC-DC CONVERTER REFERENCE GUIDE
LTC1597-1ACN CONV INPUT 8-35VDC OUTPUT 12V
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