Datasheet

5
LTC1292/LTC1297
12927fb
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
LTC1297 Supply Current (Power
Shutdown) vs CLK Frequency
REFERENCE VOLTAGE (V)
0
LINEARITY (LSB = 1/4096 × V
REF
)
0.75
1.00
1.25
4
LTC1292/7 G06
0.50
0.25
0
1
2
3
5
V
CC
= 5V
Change in Gain vs Temperature
* AS THE CLK FREQUENCY IS DECREASED FROM 1MHz, MINIMUM CLK FREQUENCY (∆ERROR ≤ 0.1LSB) REPRESENTS THE
FREQUENCY AT WHICH A 0.1LSB SHIFT IN ANY CODE TRANSITION FROM ITS 1MHz VALUE IS FIRST DETECTED (NOTE 9).
CLK FREQUENCY (kHz)
0
SUPPLY CURRENT (µA)
15
20
25
800
LTC1292/7 G04
10
5
0
200
400
600
1000
V
CC
= 5V
V
REF
= 5V
CS HIGH
CMOS LOGIC LEVELS
Change in Linearity vs
Reference Voltage
Unadjusted Offset Voltage vs
Reference Voltage
REFERENCE VOLTAGE (V)
1
0.5
0.6
5
LTC1292/7 G05
0.4
0.3
0.1
2
3
4
0.2
0.9
0.8
OFFSET (LSB = 1/4096 × V
REF
)
0.7
V
OS
= 0.125mV
V
CC
= 5V
V
OS
= 0.250mV
Change in Gain vs
Reference Voltage Change in Offset vs Temperature
AMBIENT TEMPERATURE (°C)
–50
MAGNITUDE OF OFFSET CHANGE (LSB)
0.3
0.4
0.5
50
LTC1292/7 G08
0.2
0.1
0
–25
0
25
75
125100
V
CC
= 5V
V
REF
= 5V
CLK = 1MHz
Change in Linearity vs
Temperature
AMBIENT TEMPERATURE (°C)
–50
MAGNITUDE OF LINEARITY CHANGE (LSB)
0.3
0.4
0.5
50
LTC1292/7 G09
0.2
0.1
0
–25
0
25
75
125100
V
CC
= 5V
V
REF
= 5V
CLK = 1MHz
D
OUT
Delay Time vs Temperature
REFERENCE VOLTAGE (V)
0
–1.2
CHANGE IN GAIN (LSB = 1/4096 × V
REF
)
–1.0
–0.8
–0.6
–0.4
–0.2
0
1234
LTC1292/7 G07
5
V
CC
= 5V
AMBIENT TEMPERATURE (°C)
–50
MAGNITUDE OF GAIN CHANGE (LSB)
0.3
0.4
0.5
50
LTC1292/7 G10
0.2
0.1
0
–25
0
25
75
125100
V
CC
= 5V
V
REF
= 5V
CLK = 1MHz
AMBIENT TEMPERATURE (°C)
–50
MINIMUM CLK FREQUENCY (MHz)
0.15
0.20
0.25
50
LTC1292/7 G11
0.10
0.05
–25
0
25
75
125100
V
CC
= 5V
Minimum Clock Rate for
0.1 LSB Error*
AMBIENT TEMPERATURE (°C)
–50
D
OUT
DELAY TIME FROM CLK↓ (ns)
150
200
250
50
LTC1292/7 G12
100
0
–25
0
25
75
125100
V
CC
= 5V
50
MSB FIRST DATA
LSB FIRST DATA