Datasheet
LT6600-20
3
66002fb
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: This is the temperature coeffi cient of the internal feedback
resistors assuming a temperature independent external resistor (R
IN
).
Note 3: The input common mode voltage is the average of the voltages
applied to the external resistors (R
IN
). Specifi cation guaranteed for R
IN
≥
100Ω.
Note 4: Distortion is measured differentially using a differential stimulus.
The input common mode voltage, the voltage at Pin 2, and the voltage at
Pin 7 are equal to one half of the total power supply voltage.
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. Unless otherwise specifi ed V
S
= 5V (V
+
= 5V, V
–
= 0V), R
IN
= 402, and R
LOAD
= 1k.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Filter Gain, R
IN
= 100 V
IN
= 0.5V
P-P
, f
IN
= DC to 260kHz, V
S
= 3V
V
IN
= 0.5V
P-P
, f
IN
= DC to 260kHz, V
S
= 5V
V
IN
= 0.5V
P-P
, f
IN
= DC to 260kHz, V
S
= 5V
11.6
11.5
11.4
12.1
12.0
11.9
12.6
12.5
12.4
dB
dB
dB
Filter Gain Temperature Coeffi cient (Note 2) f
IN
= 250kHz, V
IN
= 2V
P-P
780 ppm/C
Noise Noise BW = 10kHz to 20MHz 118 µV
RMS
Distortion (Note 4) 2.5MHz, 2V
P-P
, R
L
= 800Ω 2nd Harmonic
3rd Harmonic
83
88
dBc
dBc
20MHz, 2V
P-P
, R
L
= 800Ω 2nd Harmonic
3rd Harmonic
63
64
dBc
dBc
Differential Output Swing Measured Between Pins 4 and 5 V
S
= 5V
V
S
= 3V
l
l
3.80
3.75
4.75
4.50
V
P-P DIFF
V
P-P DIFF
Input Bias Current Average of Pin 1 and Pin 8
l
–95 –50 µA
Input Referred Differential Offset R
IN
= 402Ω V
S
= 3V
V
S
= 5V
V
S
= ±5V
l
l
l
5
10
10
25
30
35
mV
mV
mV
R
IN
= 100Ω V
S
= 3V
V
S
= 5V
V
S
= ±5V
l
l
l
5
5
5
15
17
20
mV
mV
mV
Differential Offset Drift 10 µV/°C
Input Common Mode Voltage (Note 3) Differential Input = 500mV
P-P
, V
S
= 3V
R
IN
= 100Ω V
S
= 5V
V
S
= ±5V
l
l
l
0.0
0.0
–2.5
1.5
3.0
1.0
V
V
V
Output Common Mode Voltage (Note 5) Differential Input = 2V
P-P
, V
S
= 3V
Pin 7 = OPEN V
S
= 5V
Common Mode Voltage at Pin 2 V
S
= ±5V
l
l
l
1.0
1.5
–1.0
1.5
3.0
2.0
V
V
V
Output Common Mode Offset
(with Respect to Pin 2)
V
S
= 3V
V
S
= 5V
V
S
= ±5V
l
l
l
–35
–40
–55
5
0
–5
40
40
35
mV
mV
mV
Common Mode Rejection Ratio 66 dB
Voltage at V
MID
(Pin 7) V
S
= 5
V
S
= 3
l
2.46 2.51
1.5
2.55 V
V
V
MID
Input Resistance
l
4.35 5.7 7.65 kΩ
V
OCM
Bias Current V
OCM
= V
MID
= V
S
/2 V
S
= 5V
V
S
= 3V
l
l
–15
–10
–3
–3
µA
µA
Power Supply Current V
S
= 3V, V
S
= 5
V
S
= 3V, V
S
= 5
V
S
= ±5V
l
l
42
46
46
53
56
mA
mA
mA
Note 5: Output common mode voltage is the average of the voltages at
Pins 4 and 5. The output common mode voltage is equal to the voltage
applied to Pin 2.
Note 6: The LT6600C-20 is guaranteed functional over the operating
temperature range –40°C to 85°C.
Note 7: The LT6600C-20 is guaranteed to meet 0°C to 70°C specifi cations
and is designed, characterized and expected to meet the extended
temperature limits, but is not tested at –40°C and 85°C. The LT6600I-20 is
guaranteed to meet specifi ed performance from –40°C to 85°C.
Note 8: The inputs are protected by back-to-back diodes. If the differential
input voltage exceeds 1.4V, the input current should be limited to less than
10mA.