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DAC709KH Datasheet(PDF) 5 Page - Texas Instruments

Part # DAC709KH
Description  Microprocessor-Compatible 16-BIT DIGITAL-TO-ANALOG CONVERTERS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

DAC709KH Datasheet(HTML) 5 Page - Texas Instruments

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5
®
DAC707/708/709
DESCRIPTION OF PIN FUNCTIONS
DAC707
Pin
DAC708/709
DESIGNATOR
DESCRIPTION
#
DESIGNATOR
DESCRIPTION
VOUT
Voltage output for DAC707 (
±10V)
1
A2
Latch enable for D/A latch (Active low)
VDD
Logic supply (+5V)
2
A0
Latch enable for “low byte” input (Active low). When
both A0 and A1 are logic “0”, the serial input mode is
selected and the serial input is enabled.
DCOM
Digital common
3
A1
Latch enable for “high byte” input (Active low). When
both A0 and A1 are logic “0”, the serial input mode is
selected and the serial input is enabled.
ACOM
Analog common
4
D7 (D15)
Input for data bit 7 if enabling low byte (LB) latch or
data bit 15 if enabling the high byte (HB) latch.
SJ
Summing junction of the internal output op amp for the
5
D6 (D14)
Input for data bit 6 if enabling LB latch or data bit 14 if
DAC707. Offset adjust circuit is connected to the
enabling the HB latch.
summing junction of the output amplifier. Refer to Block
Diagram.
GA
Gain adjust pin. Refer to Connection Diagram for gain
6
D5 (D13)
Data bit 5 (LB) or data bit 13 (HB)
adjust circuit.
+VCC
Positive supply voltage (+15V)
7
D4 (D12)
Data bit 4 (LB) or data bit 12 (HB)
–VCC
Negative supply voltage (–15V)
8
D3 (D11)
Data bit 3 (LB) or data bit 11 (HB)
CLR
Clear line. Sets the input latch to zero and sets the D/A
9
D2 (D10)
Data bit 2 (LB) or data bit 10 (HB)
latch to the input code that gives bipolar zero on the
D/A output (Active low)
WR
Write control line (Active low)
10
D1 (D9)
Data bit 1 (LB) or data bit 9 (HB)
A1
Enable for D/A converter latch (Active low)
11
D0 (D8)/SI
Data bit 0 (LB) or data bit 8 (HB). Serial input when
serial mode is selected.
A0
Enable for input latch (Active low)
12
DCOM
Digital common
D15 (MSB)
Data bit 15 (Most Significant Bit)
13
RF2
Feedback resistor for internal or external operational
amplifier. Connect to pin 14 when a 10V output range
is desired. Leave open for a 20V output range.
D14
Data bit 14
14
VOUT
Voltage output for DAC709 or feedback resistor for
RF1 (DAC708)
use with an external output op amp for the DAC708.
Refer to Connection Diagram for connection of
external op amp to DAC708.
D13
Data bit 13
15
ACOM
Analog common
D12
Data bit 12
16
SJ (DAC709)
Summing junction of the internal output op amp for the
IOUT (DAC708)
DAC709, or the current output for the DAC708. Refer
to Connection Diagram for connection of external op
amp to DAC708.
D11
Data bit 11
17
BPO
Bipolar offset. Connect to pin 16 when operating in the
bipolar mode. Leave open for unipolar mode.
D10
Data bit 10
18
GA
Gain adjust pin
D9
Data bit 9
19
+VCC
Positive supply voltage (+15V)
D8
Data bit 8
20
–VCC
Negative supply voltage (–15V)
D7
Data bit 7
21
CLR
Clear line. Sets the high and low byte input registers
to zero and, for bipolar operation, sets the D/A register
to the input code that gives bipolar zero on the D/A
output. (In the unipolar mode, invert the MSB prior to
the D/A.)
D6
Data bit 6
22
WR
Write control line
D5
Data bit 5
23
CS
Chip select control line
D4
Data bit 4
24
VDD
Logic supply (+5V)
D3
Data bit 3
25
No pin
D2
Data bit 2
26
No pin
(The DAC708 and DAC709 are in 24-pin packages)
D1
Data bit 1
27
No pin
D0 (LSB)
Data bit 0 (Least Significant Bit)
28
No pin


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