參數(shù)資料
型號(hào): LTC1668IG
廠商: LINEAR TECHNOLOGY CORP
元件分類: DAC
英文描述: CONNECTOR ACCESSORY
中文描述: PARALLEL, WORD INPUT LOADING, 0.02 us SETTLING TIME, 16-BIT DAC, PDSO28
封裝: 5.30 MM, PLASTIC, SSOP-28
文件頁數(shù): 4/16頁
文件大?。?/td> 728K
代理商: LTC1668IG
4
LTC1668
TYPICAL PERFOR U
FREQUENCY (1.25MHz/DIV)
0.05
S
–45
–25
–5
1668 G01
–65
–85
–55
–35
–15
–75
–95
–105
6.3
12.55
f
CLOCK
= 25Msps
f
= 1.007MHz
AMPLITUDE = 0dBFS
= –8.5dBm
SFDR = 86dBc
Single Tone SFDR
2-Tone SFDR
FREQUENCY (0.2MHz/DIV)
3.2
S
–50
–30
–10
1668 G02
–70
–90
–60
–40
–20
–80
–100
–110
4.2
5.2
f
CLOCK
= 50Msps
f
=
4.028MHz
f
=
4.419MHz
AMPLITUDE 1, 2
= –6dBFS
= –14.5dBm
SFDR > 77dBc
Integral Nonlinearity
Differential Nonlinearity
DIGITAL INPUT CODE
–5
I
–4
–2
–1
0
5
2
16384
32768
1668 G03
–3
3
4
1
49152
65535
DIGITAL INPUT CODE
0
D
0
1.0
65535
1668 G04
–1.0
–2.0
16384
32768
49152
2.0
–0.5
0.5
–1.5
1.5
PIU
REFOUT (Pin 15):
Internal Reference Voltage Output.
Nominal value is 2.5V. Requires a 0.1
μ
F bypass capacitor
to AGND.
I
REFIN
(Pin 16):
Reference Input Current. Nominal value is
1.25mA for I
FS
= 10mA. I
FS
= I
REFIN
8.
AGND (Pin 17):
Analog Ground.
LADCOM (Pin 18):
Attenuator Ladder Common. Normally
tied to GND.
I
OUT B
(Pin 19):
Complementary DAC Output Current. Full-
scale output current occurs when all data bits are 0s.
I
OUT A
(Pin 20):
DAC Output Current. Full-scale output
current occurs when all data bits are 1s.
COMP1 (Pin 21):
Current Source Control Amplifier Com-
pensation. Bypass to V
SS
with 0.1
μ
F.
COMP2 (Pin 22):
Internal Bypass Point. Bypass to V
SS
with 0.1
μ
F.
V
SS
(Pin 23):
Negative Supply Voltage. Nominal value is
–5V.
DGND (Pin 24):
Digital Ground.
V
DD
(Pin 25):
Positive Supply Voltage. Nominal value is 5V.
CLK (Pin 26):
Clock Input. Data is latched and the output
is updated on positive edge of clock.
DB15 to DB0 (Pins 27, 28, 1 to 14):
Digital Input Data Bits.
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