LT6555
W W
U W
ABSOLUTE AXI U RATI GS (Note 1)
Total Supply Voltage (V+ to V–) ............................ 12.6V
Input Current (Note 2) ........................................ ±10mA
Output Current (Continuous) ............................. ±70mA
EN to DGND Voltage (Note 2) ................................. 5.5V
SEL to DGND Voltage (Note 2) .................................. 8V
Output Short-Circuit Duration (Note 3)............ Indefinite
Operating Temperature Range (Note 4) ... –40°C to 85°C
Specified Temperature Range (Note 5).... –40°C to 85°C
Junction Temperature
SSOP ................................................................ 150°C
QFN .................................................................. 125°C
Storage Temperature Range
SSOP ................................................. –65°C to 150°C
QFN ................................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
SSOP ................................................................ 300°C
U
W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
TOP VIEW
ORDER PART
NUMBER
ORDER PART
+
NUMBER
1
2
V
24
23
22
21
20
19
18
17
16
15
14
13
IN1A
DGND
IN2A
EN
24 23 22 21 20 19
LT6555CGN
LT6555IGN
LT6555CUF
LT6555IUF
3
SEL A/B
+
V
1
2
3
4
5
6
18
17
16
V
REF
+
4
V
V
REF
IN3A
OUT1
–
G=+2
G=+2
G=+2
5
OUT1
IN3A
AGND1
IN1B
AGND1
V
25
–
–
6
V
V
15 OUT2
+
7
OUT2
IN1B
14
V
+
8
V
AGND2
IN2B
AGND2
13 OUT3
UF PART*
MARKING
9
OUT3
7
8
9 10 11 12
–
10
11
12
V
AGND3
IN3B
+
6555
V
+
–
V
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
V
GN PACKAGE
TJMAX = 125°C, θJA = 37°C/W, θJC = 2.6°C/W
24-LEAD PLASTIC SSOP
EXPOSED PAD (PIN 25) IS V–
MUST BE SOLDERED TO PCB
TJMAX = 150°C, θJA = 90°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±5V, RL = 150Ω, CL = 1.5pF, VEN = 0.4V, VAGND, VDGND, VVREF = 0V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Referred Offset Voltage
V
= 0V, V = V /2
5
±16
±24
mV
mV
OS
IN
OS
OUT
●
●
●
I
Input Current
–17
400
1
±45
µA
kΩ
pF
IN
R
Input Resistance
V
= ±1V
100
56
IN
IN
IN
C
Input Capacitance
f = 100kHz
V = ±2.25V to ±6V (Note 6)
PSRR
Power Supply Rejection Ratio
Input Current Power Supply Rejection
Gain Error
●
●
●
62
1
dB
S
I
V = ±2.25V to ±6V (Note 6)
±4
µA/V
%
PSRR
S
A ERR
V
= ±2V, Nominal Gain 2V/V
OUT
±2.5
V
A MATCH
Gain Matching
Any One Channel to Another
(Note 7)
±0.33
±3.4
%
V
V
Output Voltage Swing
±3.15
±3.0
V
V
OUT
●
6555f
2