LTC1293_15 Datasheet, PDF (6/28 Pages) Linear Technology – Single Chip 12-Bit Data Acquisition System

LTC1293/LTC1294/LTC1296
TYPICAL PERFOR A CE CHARACTERISTICS
D_OUT Delay Time vs Temperature
250
V_CC = 5V
200
150 MSB FIRST DATA
100
LSB FIRST DATA
Maximum Clock Rate vs Source
Resistance
1.0
V_CC = 5V
V_REF = 5V
0.8
CLK = 1MHz
+V_IN + +IN
0.6
R_SOURCE– _{– –IN}
0.4
50
0.2
Maximum Filter Resistor vs Cycle
Time
10k
R_FILTER
+V_IN
+
1k
C_FILTER ≥1µF
–
100
10
0
–50 –25 0 25 50 75 100 125
AMBIENT TEMPERATURE (°C)
LTC1293 G10
Sample and Hold Acquisition
Time vs Source Resistance
100
V_REF = 5V
V_CC = 5V
T_A = 25°C
0V TO 5V INPUT STEP
10
+ ^RSOURCE+
V_IN
–
1
100
1000
R_SOURCE+ (Ω)
10000
LTC1292 G13
LTC1296 SSO Source Current vs
V_CC – V_SSO
500
V_CC = 5V
400
300
200
0
100
1k
10k
100k
R_SOURCE– (Ω)
LTC1293 G11
Input Channel leakage Current vs
Temperature
1000
900
GUARANTEED
800
700
600
500
400
300
200
ON CHANNEL
100
OFF CHANNEL
0
–50 –30 –10 10 30 50 70 90 110 130
AMBIENT TEMPERATURE (°C)
LTC1293 G14
1
10
100
1k
10k
CYCLE TIME (µs)
LTC1293 G12
Noise Error vs Reference Voltage
2.25
LTC1293/4/6 NOISE = 200µV_p-p
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
0
1
2
3
4
5
REFERENCE VOLTAGE (V)
LTC1293 G15
LTC1296 SSO Sink Current vs
V_SSO
500
V_CC = 5V
400
300
* MAXIMUM CLK FREQUENCY REPRESENTS THE CLK
FREQUENCY AT WHICH A 0.1LSB SHIFT IN THE ERROR
AT ANY CODE TRANSITION FROM ITS 1MHz VALUE IS
FIRST DETECTED.
** MAXIMUM R_FILTER REPRESENTS THE FILTER RESISTOR
VALUE AT WHICH A 0.1LSB CHANGE IN FULL SCALE ERROR
FROM ITS VALUE AT R_FILTER = 0Ω IS FIRST DETECTED.
200
100
100
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
V_CC – V_SSO VOLTAGE (V)
LTC1293 G16
0
0
0.2 0.4 0.6 0.8 1.0
V_SSO VOLTAGE (V)
LTC1293 G17
129346fs
6