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DAC8820ICDBR bảng dữ liệu(PDF) 4 Page - Texas Instruments

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tên linh kiện DAC8820ICDBR
Giải thích chi tiết về linh kiện  16-Bit, Parallel Input Multiplying Digital-to-Analog Converter
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Trang chủ  http://www.ti.com
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DAC8820ICDBR bảng dữ liệu(HTML) 4 Page - Texas Instruments

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PIN ASSIGNMENTS
REF
R
COM
R1
R
OFS
R
FB
I
OUT
AGND
LDAC
WR
D15
D14
D13
D12
D11
RST
D0
D1
D2
D3
V
DD
DGND
D4
D5
D6
D7
D8
D9
D10
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
DAC8820
DAC8820
SBAS358C – AUGUST 2005 – REVISED JUNE 2006
ELECTRICAL CHARACTERISTICS (continued)
All specifications at –40
°C to +85°C, V
DD = +2.7 V to +5.5 V, IOUT = virtual GND, GND = 0 V, VREF = 10 V, and TA = full
operating temperature, unless otherwise noted.
DAC8820
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
POWER REQUIREMENTS
VDD
2.7
5.5
V
IDD (normal operation)
Logic inputs = 0 V
5
µA
VDD = +4.5 V to +5.5 V
VIH = VDD and VIL = GND
3
5
µA
VDD = +2.7 V to +3.6 V
VIH = VDD and VIL = GND
1
2.5
µA
AC CHARACTERISTICS(2)
Output current settling time
0.5
µs
Reference multiplying BW
VREF = 5 VPP, Data = FFFFh
8
MHz
VREF = 0 V to 10 V,
DAC glitch impulse
2
nV–s
Data = 7FFFh to 8000h to 7FFFh
Feedthrough error VOUT/VREF
Data = 0000h, VREF = 10 kHz, ±10VPP
–70
dB
LDAC = Logic low, VREF = –10 V to + 10 V
Digital feedthrough
1
nV–s
Any code change
Total harmonic distortion
VREF = 6VRMS, Data = FFFFh, f = 1kHz
–105
dB
Output spot noise voltage
10
nV/
√Hz
(2)
Specified by design and characterization; not production tested.
PIN #
NAME
DESCRIPTION
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
8
LDAC
is high, data is loaded from input register into
a DAC register, updating the DAC output.
Write control digital input. Active low. When
WR is taken to logic low, data is loaded from
9
WR
the digital input pins (D0–D15) into a16-bit
input register.
10–2
D15–D4
Digital input data bits. D15 is MSB.
1
22
DGND
Digital ground
23
VDD
Positive power supply
24–2
D3–D0
Digital Input data bits. D0 is LSB.
7
Reset. Active low. When RST is taken to
logic low, the DAC output and all internal
28
RST
registers are set to zero code for the
DAC8820.
TERMINAL FUNCTIONS
PIN #
NAME
DESCRIPTION
Reference input and 4-quadrant Resistor
1
REF
(R2).
4
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