LTC1069-6

5

10696fa

TYPICAL PERFORMANCE CHARACTERISTICS

Supply Current vs Supply Voltage

Output Voltage Swing

vs Temperature

Dynamic Range THD + Noise

vs Input/Output Voltage

Dynamic Range THD + Noise

vs Input Voltage

THD + Noise vs Frequency

0.1

–90

–80

–70

–60

–50

13

1069-6 G14

–85

–75

–65

–55

–45

–40

0.1

0.5 0.76

1.43

–90

–80

–70

–60

–50

15

1069-6 G10

–85

–75

–65

–55

–45

–40

SINGLE 5V

FREQUENCY (kHz)

15

10

1069-6 G11

–90

–80

–70

–60

–50

–85

–75

–65

–55

–45

–40

TOTAL SUPPLY VOLTAGE (V)

0

0

2

5

4

8

10

1069-6 G12

1

4

3

26

12

14

16

85°C

–40°C

25°C

AMBIENT TEMPERATURE (°C)

–40

–20

0

20406080

0

20

40

60

80

4.5

2.5

4.0

2.0

1069-6 G13

PIN FUNCTIONS

AGND (Pin 1): Analog Ground. The quality of the analog

signal ground can affect the filter 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

NC

1

2

3

4

8

7

6

5

NC

CLK

LTC1069-6

1069-6 F01

AGND

11.325k 8.775k

Figure 1. Internal Biasing of the Analog Ground (Pin 1)