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LTC2758 データシート(PDF) 7 Page - Linear Technology

部品番号 LTC2758
部品情報  Dual Serial 18-Bit SoftSpan IOUT DACs
PDF  24 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTC2758 データシート(HTML) 7 Page - Linear Technology

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LTC2758
7
2758fa
For more information www.linear.com/LTC2758
TYPICAL PERFORMANCE CHARACTERISTICS
Settling Full-Scale Step
INL vs VDD
DNL vs VDD
Logic Threshold
vs Supply Voltage
Supply Current
vs Logic Input Voltage
Supply Current
vs Update Frequency
Mid-Scale Glitch (VDD = 3V)
VDD = 5V, V(RINX) = 5V, TA = 25°C, unless otherwise noted.
Mid-Scale Glitch (VDD = 5V)
Multiplying Frequency Response
vs Digital Code
VDD (V)
2.5
3.5
4
–1.0
–0.8
–0.6
–0.2
–0.4
0.4
0.2
0
0.6
0.8
1.0
5
4.5
5.5
2758 G10
3
+INL
–INL
0V TO 10V RANGE
VDD (V)
2.5
3.5
4
–1.0
–0.8
–0.6
–0.2
–0.4
0.4
0.2
0
0.6
0.8
1.0
5
4.5
5.5
2758 G11
3
+DNL
–DNL
0V TO 10V RANGE
ALL BITS ON
ALL BITS OFF
FREQUENCY (Hz)
100
1k
10k
–140
–100
–120
–60
–80
–40
–20
0
1M
100k
10M
2758 G12
0V TO 5V OUTPUT RANGE
LT1468 OUTPUT AMPLIFIER
CFEEDBACK = 15pF
D17
D16
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
500ns/DIV
CS/LD
5V/DIV
GATED
SETTLING
WAVEFORM
100µV/DIV
(AVERAGED)
2758 G13
LT1468 AMP; CFEEDBACK = 20pF
0V TO 10V STEP
VREF = –10V; SPAN CODE = 0000
tSETTLE = 1.8µs to 0.0004% (18 BITS)
DIGITAL INPUT VOLTAGE (V)
0
3
4
5
4
2758 G16
2
1
0
1
2
3
5
VDD = 5V
CLR, LDAC, SDI, SCK,
CS/LD TIED TOGETHER
VDD = 3V
VDD (V)
2.5
0.5
0.75
1
1.25
1.5
2
3
3.5
4
4.5
5
5.5
1.75
2758 G17
RISING
FALLING
SCK FREQUENCY (Hz)
1
0.0001
0.001
0.01
0.1
1
10
100
VDD = 5V
100
10k
1M
100M
2758 G18
VDD = 3V
ALTERNATING ZERO-SCALE
AND FULL-SCALE
500ns/DIV
CS/LD
5V/DIV
VOUT
5mV/DIV
(AVERAGED)
2758 G14
0V TO 5V RANGE
LT1468 OUTPUT AMPLIFIER
CFEEDBACK = 50pF
RISING MAJOR CARRY TRANSITION.
FALLING TRANSITION IS SIMILAR OR BETTER.
0.4nV•s TYP
500ns/DIV
CS/LD
5V/DIV
VOUT
5mV/DIV
(AVERAGED)
2758 G15
0V TO 5V RANGE
LT1468 OUTPUT AMPLIFIER
CFEEDBACK = 50pF
RISING MAJOR CARRY TRANSITION.
FALLING TRANSITION IS SIMILAR OR BETTER.
2nV•s TYP



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