LT6604CUFF-5#PBF Linear Technology, LT6604CUFF-5#PBF Datasheet - Page 7

• Manufacturer Part Number: LT6604CUFF-5#PBF
• Description: IC AMP DIFF LN DUAL 34-QFN
• Manufacturer: Linear Technology

Specifications of LT6604CUFF-5#PBF

• Amplifier Type: Differential
• Number Of Circuits: 2
• Output Type: Differential
• Current - Input Bias: 30µA
• Voltage - Input Offset: 8000µV
• Current - Supply: 30mA
• Voltage - Supply, Single/dual (±): 3 V ~ 11 V, ±1.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 34-QFN
• No. Of Amplifiers: 2
• Input Offset Voltage: 35mV
• Bandwidth: 5MHz
• Supply Voltage Range: 3V To 11V
• Supply Current: 30mA
• Amplifier Case Style: QFN
• No. Of Pins: 34
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• -3db Bandwidth: -
• Slew Rate: -
• Gain Bandwidth Product: -

TYPICAL PERFORMANCE CHARACTERISTICS
+INA, –INA (Pins 2, 4): Channel A Input Pins. Signals can
be applied to either or both input pins through identical
external resistors, R
inputs to the differential outputs is 806Ω/R
V
for the 2nd Filter Stage in channel A. Its value programs
the common mode voltage of the differential output of
the fi lter. Pin 6 is a high impedance input, which can be
driven from an external voltage reference, or Pin 6 can be
tied to Pin 34 on the PC board. Pin 6 should be bypassed
with a 0.01μF ceramic capacitor unless it is connected to
a ground plane.
V
Can be ground.
V
supply, see Block Diagram. For single supply operation
the V
ceramic capacitor to V
can be bypassed or connected to a high quality DC ground.
A ground plane should be used. A poor ground will increase
noise and distortion. Pin 8 sets the output common mode
voltage of the 1st stage of the fi lter in channel B. It has a
5.5kΩ impedance, and it can be overridden with an external
low impedance voltage source.
PIN FUNCTIONS
OCMA
–
MIDB
(Pins 7, 24, 31, 32, 35): Negative Power Supply Pin.
MIDB
(Pin 8): The V
(Pin 6): DC Common Mode Reference Voltage
pin should be bypassed with a quality 0.01μF
45
40
35
30
25
20
15
10
5
0
0.01
Input Referred Noise
IN
MIDB
. The DC gain from the differential
–
. For dual supply operation, Pin 8
INTEGRATED NOISE, GAIN = 1X
INTEGRATED NOISE, GAIN = 4X
NOISE DENSITY, GAIN = 1X
NOISE DENSITY, GAIN = 4X
0.1
pin is internally biased at mid
FREQUENCY (MHz)
1
10
IN
66045 G17
.
100
90
80
70
60
50
40
30
20
10
0
+INB, –INB (Pins 10, 12): Channel B Input Pins. Signals
can be applied to either or both input pins through identi-
cal external resistors, R
inputs to the differential outputs is 806Ω/R
V
for the 2nd Filter Stage in Channel B. Its value programs
the common mode voltage of the differential output of
the fi lter. Pin 14 is a high impedance input, which can be
driven from an external voltage reference, or Pin 14 can be
tied to Pin 8 on the PC board. Pin 14 should be bypassed
with a 0.01μF ceramic or greater capacitor unless it is
connected to a ground plane.
V
for Channels A and B. For a single 3.3V or 5V supply
(V
is required from each positive supply pin (V
the negative supply pin (V
close as possible to the IC. For dual supply applications,
bypass the negative supply pins to ground and each of the
positive supply pins (V
0.1μF ceramic capacitor.
+OUTB, –OUTB (Pins 19, 21): Output Pins. Pins 19 and
21 are the fi lter differential outputs for channel B. With a
typical short-circuit current limit greater than ±40mA, each
pin can drive a 100Ω and/or 50pF load to AC ground.
OCMB
+
–
A, V
–110
–130
grounded) a quality 0.1μF ceramic bypass capacitor
–10
–30
–50
–70
–90
100k
+
(Pin 14): DC Common Mode Reference Voltage
Channel Separation
vs Frequency (Note 9)
V
V
R
EACH OUTPUT
GAIN = 1
B (Pins 25, 17): Positive Power Supply Pins
IN
S
L
= 5V
= 800Ω AT
= 2V
P-P
1M
FREQUENCY (Hz)
+
IN
A, V
10M
. The DC gain from differential
–
). The bypass should be as
+
B) to ground with a quality
66045 G18
100M
LT6604-5
IN
.
+
A, V
+
B) to
66045fa
7