參數(shù)資料
型號(hào): LTC1274
廠商: Linear Technology Corporation
英文描述: 12-Bit, 10mW, 100ksps ADCs with 1uA Shutdown
中文描述: 12位,僅為10mW,100ksps的ADC的與1uA的關(guān)斷
文件頁數(shù): 7/20頁
文件大?。?/td> 411K
代理商: LTC1274
7
LTC1274/LTC1277
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Reference Voltage vs
Load Current
LOAD CURRENT (mA)
–6
R
2.435
2.430
2.425
2.420
2.415
2.410
2.405
–3
–1
LT1274/77 TPC13
–5
–4
–2
0
1
Supply Current vs Temperature
TEMPERATURE (
°
C)
–55
S
3.0
2.5
2.0
1.5
1.0
0.5
0
25
75
LT1274/77 TPC11
–25
0
50
100
125
f
SAMPLE
= 100kHz
Power Supply Feedthrough vs
Ripple Frequency
0
f
SAMPLE
= 100kHz
RIPPLE FREQUENCY (kHz)
1
A
10
100
1000
LTC1274/77 TPC12
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
AV
DD
(V
RIPPLE
= 1mV)
V
SS
(V
RIPPLE
= 10mV)
DGND (V
RIPPLE
= 0.1V)
Supply Current vs Sample Rate
With Sleep and Nap Modes
SAMPLE RATE (Hz)
S
μ
A
10000
1000
100
10
1
0.1
1k
100k
LTC1274/77 TPC15
10
1
10k
100
WITHOUT SLEEP OR NAP
NAP = 5V
(SLEEP MODE)
NAP = REFRDY
(SLEEP MODE)
NAP MODE
C
REF
= 4.7
μ
F
Wake-Up Time vs
C
REF
(Sleep Mode)
Supply Current vs
Supply Voltage
C
REF
(
μ
F)
0
W
10
9
8
7
6
5
4
3
2
1
0
40
LTC1274/77 TPC16
10
5
15
25
35
45
20
30
50
T
A
= 25
°
C
SUPPLY VOLTAGE (V)
0
S
3.0
2.5
2.0
1.5
1.0
0.5
0
1
2
3
4
LTC1274/77 TPC14
5
6
f
SAMPLE
= 100kHz
PU
U
LTC1274
A
IN
(Pin 1):
Analog Input. 0V to 4.096V, unipolar (V
SS
=
0V) or
±
2.048V, bipolar (V
SS
= –5V).
V
REF
(Pin 2):
2.42V Reference Output. Bypass to AGND
(10
μ
F tantalum in parallel with 0.1
μ
F ceramic). V
REF
can be
overdriven positive with an external reference voltage.
AGND (Pin 3):
Analog Ground.
D11 to D4 (Pins 4 to 11):
Three-State Data Outputs. D11
is the Most Significant Bit.
DGND (Pin 12):
Digital Ground.
U
D3 to D0 (Pins 13 to 16):
Three-State Data Outputs.
REFRDY (Pin 17):
Reference Ready Signal. It goes high
when the reference has settled after SLEEP indicating that
the ADC is ready to sample.
SLEEP (Pin 18):
SLEEP Mode Input. Tie this pin to low to
put the ADC in Sleep mode and save power (REFRDY will
go low). The device will draw 1
μ
A in this mode.
CONVST (Pin 19):
Conversion Start Signal. This active low
signal starts a conversion on its falling edge (to recognize
CONVST, CS has to be low.)
相關(guān)PDF資料
PDF描述
LTC1274IS Replaced by TLC2933A : High Performance Phase Locked Loop 14-TSSOP -20 to 75
LTC1277CS 12-Bit, 10mW, 100ksps ADCs with 1uA Shutdown
LTC1275AC Phase Locked Loop 14-TSSOP -20 to 75
LTC1276BC 12-Bit, 300ksps Sampling A/D Converters with Reference
LTC1276BCN 12-Bit, 300ksps Sampling A/D Converters with Reference
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