Linear Technology LTC6804-1 - Page 6

LTC6804-1/LTC6804-2
6
680412fc
For more information www.linear.com/LTC6804-1
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Voltage Reference Specifications
V
REF1
1st Reference Voltage V
REF1
Pin, No Load
l
3.1 3.2 3.3 V
1st Reference Voltage TC V
REF1
Pin, No Load 3 ppm/°C
1st Reference Voltage Hysteresis V
REF1
Pin, No Load 20 ppm
1st Reference Long Term Drift V
REF1
Pin, No Load 20 ppm/√kHr
V
REF2
2nd Reference Voltage V
REF2
Pin, No Load
l
2.990 3 3.010 V
V
REF2
Pin, 5k Load to V
–
l
2.988 3 3.012 V
2nd Reference Voltage TC V
REF2
Pin, No Load 10 ppm/°C
2nd Reference Voltage Hysteresis V
REF2
Pin, No Load 100 ppm
2nd Reference Long Term Drift V
REF2
Pin, No Load 60 ppm/√kHr
General DC Specifications
I
VP
V
+
Supply Current
(See Figure 1: LTC6804 Operation
State Diagram)
State: Core = SLEEP
, isoSPI = IDLE V
REG
= 0V 3.8 6 µA
V
REG
= 0V
l
3.8 10 µA
V
REG
= 5V 1.6 3 µA
V
REG
= 5V
l
1.6 5 µA
State: Core = STANDBY 18 32 50 µA
l
10 32 60 µA
State: Core = REFUP or MEASURE 0.4 0.55 0.7 mA
l
0.375 0.55 0.725 mA
I
REG(CORE)
V
REG
Supply Current
(See Figure 1: LTC6804 Operation
State diagram)
State: Core = SLEEP, isoSPI = IDLE V
REG
= 5V 2.2 4 µA
V
REG
= 5V
l
2.2 6 µA
State: Core = STANDBY 10 35 60 µA
l
6 35 65 µA
State: Core = REFUP 0.2 0.45 0.7 mA
l
0.15 0.45 0.75 mA
State: Core = MEASURE 10.8 11.5 12.2 mA
l
10.7 11.5 12.3 mA
I
REG(isoSPI)
Additional V
REG
Supply Current if
isoSPI in READY/ACTIVE States
Note: ACTIVE State Current
Assumes t
CLK
= 1µs, (Note3)
LTC6804-2: ISOMD = 1,
R
B1
+ R
B2
= 2k
READY
l
3.9 4.8 5.8 mA
ACTIVE
l
5.1 6.1 7.3 mA
LTC6804-1: ISOMD = 0,
R
B1
+ R
B2
= 2k
READY
l
3.7 4.6 5.6 mA
ACTIVE
l
5.7 6.8 8.1 mA
LTC6804-1: ISOMD = 1,
R
B1
+ R
B2
= 2k
READY
l
6.5 7.8 9.5 mA
ACTIVE
l
10.2 11.3 13.3 mA
LTC6804-2: ISOMD = 1,
R
B1
+ R
B2
= 20k
READY
l
1.3 2.1 3 mA
ACTIVE
l
1.6 2.5 3.5 mA
LTC6804-1: ISOMD = 0,
R
B1
+ R
B2
= 20k
READY
l
1.1 1.9 2.8 mA
ACTIVE
l
1.5 2.3 3.3 mA
LTC6804-1: ISOMD = 1,
R
B1
+ R
B2
= 20k
READY
l
2.1 3.3 4.9 mA
ACTIVE
l
2.7 4.1 5.8 mA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. The test conditions are V
+
= 39.6V, V
REG
= 5.0V unless otherwise noted.