LTC1069-6CS8#TRPBF Linear Technology, LTC1069-6CS8#TRPBF Datasheet - Page 5

• Manufacturer Part Number: LTC1069-6CS8#TRPBF
• Description: IC FILTR 8TH ORDER LOWPASS 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC1069-6CS8#TRPBF

• Filter Type: Elliptic, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 14kHz/20kHz
• Number Of Filters: 1
• Max-order: 8th
• Voltage - Supply: 3 V ~ 10 V, ±1.5 V ~ 5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL PERFORMANCE CHARACTERISTICS
PIN FUNCTIONS
AGND (Pin 1): Analog Ground. The quality of the analog
signal ground can affect the fi lter performance. For either
single or dual supply operation, an analog ground plane
surrounding the package is recommended. The analog
ground plane should be connected to any digital ground
at a single point. For single supply operation, Pin 1 should
be bypassed to the analog ground plane with a 0.47μF
capacitor or larger. An internal resistive divider biases
Pin 1 to 0.4366 times the total power supply of the device
(Figure 1). That is, with a single 5V supply, the potential
at Pin 1 is 2.183V ±1%. As the LTC1069-6 is optimized
–40
–45
–50
–55
–60
–65
–80
–85
–90
–70
–75
0.1
Dynamic Range THD + Noise
vs Input/Output Voltage
f
f
f
CLK
CUTOFF
IN
= 1kHz
= 170kHz
INPUT/OUTPUT VOLTAGE (V
= 3.4kHz
5
4
3
2
1
0
0
Supply Current vs Supply Voltage
2
V
IN
TOTAL SUPPLY VOLTAGE (V)
= 2.945V
4
1
6
25°C
P-P
P-P
8
)
1069-6 G14
85°C
–40°C
10
3
12
14
1069-6 G12
–40
–45
–50
–55
–80
–85
–90
–60
–65
–70
–75
0.1
16
Dynamic Range THD + Noise
vs Input Voltage
f
f
CLK
IN
= 1kHz
= 500kHz
V
S
= SINGLE 3V
INPUT VOLTAGE (V
0.5 0.76
1
1.43
Figure 1. Internal Biasing of the Analog Ground (Pin 1)
RMS
V
SINGLE 5V
S
)
=
1069-6 G10
2.0
4.5
4.0
2.5
80
60
40
20
0
5
Output Voltage Swing
vs Temperature
R
–40
L
= 10k
1
2
3
4
–20
AMBIENT TEMPERATURE (°C)
V
AGND
V
NC
V
S
–40
–45
–50
–80
–85
–90
–55
–60
–65
–75
–70
+
IN
V
11.325k 8.775k
= SINGLE 5V
S
= SINGLE 3V
LTC1069-6
1
0
THD + Noise vs Frequency
f
f
CLK
CUTOFF
= 500kHz
V
V
20
S
S
= SINGLE 5V
= SINGLE 3V
= 10kHz
V
1069-6 F01
CLK
OUT
NC
V
40
–
FREQUENCY (kHz)
8
7
6
5
V
V
V
S
S
V
60
LTC1069-6
IN
= SINGLE 3V
= SINGLE 5V
IN
= 0.5V
= 1V
1069-6 G13
80
RMS
RMS
5
1069-6 G11
10696fa
5
10