Filter Selection

The filter type is selected using the two filter se-

lect pins, TYPE

and FSEL, FSEL is a CMOS

level pin that selects lowpass or

bandpass

response (lowpass = 0, bandpass = 2). TYPE Is

a tertiary control pin that selects the filter

response.

State 0 is VSS, state 1 is AGND

and state 2 is VDD.

TYPE

Lowpass

Bandpass

0

Butterworth

Full Octave

1

Bessel

Third Octave

2

Elliptic

Sixth Octave

Pin Description

1.

TYPE

Filter Response Select Pin.

2.

FCLK

Filter Clock Input

3.

G

Gain Select Pin

4.

PWR

Power Select Pin; CMOS level

High= Regular Power; Low=Low

Power

5.

VDD

Positive Power Supply,Typically

+1.5 Volts for Split Supply, +3.0

Volts for Single Supply

6.

PDown

Power Down Pin, CMOS level,

Hi = Power Down

7,

VSS

Negative Power Supply,Typically

-1.5 Volts for Split Supply, 0

Volts for Single Supply

8.

MCLK

Mixer Clock: CMOS Levels

9.

F0

Clock to Corner Select Pin

10. MO

Mixer Output

11.

AGND

GND Pin, OV for Split Supplies

+1.5 Volts Typical for Single

Supply

12. FIN

Filter Input

13. MIX2

Mixer Input 2

14. MIX1

Mixer Input 1

15. FSEL

Filter Select

2 = Banpass; 0= Lowpass

16. FOUT

Filter Output

Gain and Frequency Selection

The Gain select pin G is a tertiary control pin

where state 0 is VSS, state 1 is AGND level

and state 2 is VDD.

G

Gain

0

OdB

1

10dB

2

20dB

The clock to corner select pin F0 is a CMOS

level pin where HIGH is clock to corner of 12.5

to 1 (25 to 1 for Bessel) and LOW is clock to

corner of 6.25 to 1 (12.5 to 1 for Bessel). The

sample rate ratio is twice the clock to corner

ratio (double sampling).

Pin Configuration

©2011-2

2014

Mixeed Signal Inteegratioon

4

Weeb Sitee ““www.mix-ssig.coom””

6/2014

High Frequency Mixxer and Selecttable VHF LP//BP Filtter

Datta Sheett

1

2

3

4

5

6

7

14

13

12

11

10

9

8

16

15

TYPE

MCLK

FO

FCLK

G

PWR

VDD

PD

VSS

MO

AGND

FIN

MIX2

MIX1

FSEL

FOUT