Datasheet

LTC6915
3
6915fb
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
+
= 3V, V
–
= 0V, V
REF
= 200mV
Gain Error (Note 2) A
V
= 1 (R
L
=10k)
l
–0.075 0 0.075 %
Gain Error (Note 2) A
V
= 2 to 32 (R
L
= 10k)
l
–0.5 0 0.5 %
Gain Error (Note 2) A
V
= 64 to 1024 (R
L
= 10k)
l
–0.6 –0.1 0.6 %
Gain Error (Note 2) A
V
= 2048, 4096 (R
L
= 10k)
l
–1 –0.2 1.0 %
Gain Nonlinearity A
V
= 1
l
3 15 ppm
V
OS
Input Offset Voltage (Note 3) V
CM
= 200mV –3 ±10 µV
Average Input Offset Drift (Note 3) T
A
= –40°C to 85°C
T
A
= 85°C to 125°C
l
l
±50
±100
nV/°C
nV/°C
I
B
Average Input Bias Current (Note 4) V
CM
= 1.2V
l
5 10 nA
I
OS
Average Input Offset Current (Note 4) V
CM
= 1.2V
l
1.5 3 nA
en Input Noise Voltage DC to 10Hz 2.5 µV
P-P
V
+
= 3V, V
–
= 0V, V
REF
= 200mV
CMRR Common Mode Rejection Ratio A
V
= 1024, V
CM
= 0V to 3V, LTC6915C
A
V
= 1024, V
CM
= 0.1V to 2.9V, LTC6915I
A
V
= 1024, V
CM
= 0V to 3V, LTC6915I
A
V
= 1024, V
CM
= 0.1V to 2.9V, LTC6915H
A
V
= 1024, V
CM
= 0V to 2.97V, LTC6915H
l
l
l
l
l
100
100
95
100
85
119
119
119
dB
dB
dB
dB
dB
PSRR Power Supply Rejection Ratio (Note 5) V
S
= 2.7V to 6V
l
110 116 dB
Output Voltage Swing High (Referenced to V
–
) Sourcing 200µA
Sourcing 2mA
l
l
2.95
2.75
2.98
2.87
V
V
Output Voltage Swing Low (Referenced to V
–
) Sinking 200µA
Sinking 2mA
l
l
18
130
50
300
mV
mV
Supply Current, Parallel Mode No Load at OUT, V
CM
= 200mV
l
0.88 1.3 mA
Supply Current, Serial Mode (Note 6) No Load at OUT, Capacitive Load at
D
OUT
(C
L
) = 15pF, Continuous CLK
Frequency = 4MHz, CS = LOW,
Gain Control Code = 0001
l
1.1 1.65 mA
Supply Current Shutdown V
SHDN
= 2.7V (Hardware Shutdown)
V
SHDN
= 1V, Gain Control Code = 0000
(Software Shutdown)
l
l
1
125
4
180
µA
µA
SHDN Input High
l
2.7 V
SHDN Input Low
l
1 V
SHDN and HOLD_THRU Input Current (Note 2)
l
5 µA
Internal Op Amp Gain Bandwidth 200 kHz
Slew Rate 0.2 V/µs
Internal Sampling Frequency 3 kHz
V
+
= 5V, V
–
= 0V, V
REF
= 200mV
Gain Error (Note 2) A
V
= 1 (R
L
= 10k)
l
–0.075 0 0.075 %
Gain Error (Note 2) A
V
= 2 to 32 (R
L
= 10k)
l
–0.5 0 0.5 %
Gain Error (Note 2) A
V
= 64 to 1024 (R
L
= 10k)
l
–0.6 –0.1 0.6 %
Gain Error (Note 2) A
V
= 2048, 4096 (R
L
= 10k)
l
–1 –0.2 1 %
Gain Nonlinearity A
V
= 1
l
3 15 ppm