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DAC8806 データシート(PDF) 4 Page - Texas Instruments

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部品番号 DAC8806
部品情報  14-Bit, Parallel Input Multiplying Digital-to-Analog Converter
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

DAC8806 データシート(HTML) 4 Page - Texas Instruments

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PIN ASSIGNMENTS
REF
R
COM
R1
R
OFS
R
FB
I
OUT
AGND
LDAC
WR
D13
D12
D11
D10
D9
RST
NC
NC
D0
D1
V
DD
DGND
D2
D3
D4
D5
D6
D7
D8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DAC8806
DAC8806
SBAS385A – APRIL 2006 – REVISED JUNE 2006
ELECTRICAL CHARACTERISTICS (continued)
All specifications at –40
°C to +85°C, V
DD = +2.7V to +5.5V, IOUT = virtual GND, GND = 0V, VREF = 10V, and TA = full
operating temperature, unless otherwise noted.
DAC8806
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
POWER REQUIREMENTS
VDD
2.7
5.5
V
IDD (normal operation)
Logic inputs = 0V
5
µA
VDD = +4.5V to +5.5V
VIH = VDD and VIL = GND
3
5
µA
VDD = +2.7V to +3.6V
VIH = VDD and VIL = GND
1
2.5
µA
AC CHARACTERISTICS(2)
Output current settling time
0.5
µs
Reference multiplying BW
VREF = 5VPP, Data = 3FFFh
8
MHz
VREF = 0V to 10V,
DAC glitch impulse
2
nV–s
Data = 1FFFh to 2000h to 1FFFh
Feedthrough error VOUT/VREF
Data = 0000h, VREF = 10kHz; ±10VPP
–70
dB
LDAC = logic low, VREF = –10V to +10V
Digital feedthrough
2
nV–s
Any code change
Total harmonic distortion
VREF = 6VRMS, Data = 3FFF, f = 1kHz
–105
dB
Output spot noise voltage
10
nV/
√Hz
(2)
Specified by design and characterization; not production tested.
TERMINAL FUNCTIONS
PIN #
NAME
DESCRIPTION
1
REF
Reference input and 4-quadrant Resistor (R2).
Center tap of two 4-quadrant resistors
2
RCOM
(R1 and R2).
3
R1
4-quadrant resistor (R1).
4
ROFS
Bipolar offset resistor
5
RFB
Internal matching feedback resistor
6
IOUT
DAC current output
7
AGND
Analog ground
Digital input load DAC control. When LDAC is high,
8
LDAC
data is loaded from input register into a DAC
register, updating the DAC output.
Write control digital input. Active low. When WR is
9
WR
taken to logic low, data is loaded from the digital
input pins (D0–D13) into a14-bit input register.
10–21
D13–D2
Digital input data bits. D13 is MSB.
22
DGND
Digital ground
23
VDD
Positive power supply
24, 25
D1, D0
Digital Input data bits. D0 is LSB.
26, 27
NC
No connection
Reset. Active low. When RST is taken to logic low,
28
RST
the DAC output and all internal registers are set to
zero code for the DAC8806.
4
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