MAX12527

Dual, 65Msps, 12-Bit, IF/Baseband ADC

 

 

 

Pin Description

 

 

 

 

 

 

PIN

NAME

FUNCTION

1, 4, 5, 9,

GND

Converter Ground. Connect all ground pins and the exposed paddle (EP) together.

13, 14, 17

 

 

 

 

 

 

 

 

2

INAP

Channel A Positive Analog Input

 

 

 

 

 

3

INAN

Channel A Negative Analog Input

 

 

 

 

 

6

COMA

Channel A Common-Mode Voltage I/O. Bypass COMA to GND with a 0.1µF capacitor.

 

 

 

Channel A Positive Reference I/O. Channel A conversion range is ±2/3 x (VREFAP - VREFAN). Bypass

7

REFAP

REFAP with a 0.1µF capacitor to GND. Connect a 10µF and a 1µF bypass capacitor between REFAP

and REFAN. Place the 1µF REFAP-to-REFAN capacitor as close to the device as possible on the

 

 

 

 

 

 

same side of the PC board.

 

 

 

 

 

 

 

 

Channel A Negative Reference I/O. Channel A conversion range is ±2/3 x (VREFAP - VREFAN). Bypass

8

REFAN

REFAN with a 0.1µF capacitor to GND. Connect a 10µF and a 1µF bypass capacitor between REFAP

and REFAN. Place the 1µF REFAP-to-REFAN capacitor as close to the device as possible on the

 

 

 

 

 

 

same side of the PC board.

 

 

 

Channel B Negative Reference I/O. Channel B conversion range is ±2/3 x (VREFBP - VREFBN). Bypass

10

REFBN

REFBN with a 0.1µF capacitor to GND. Connect a 10µF and a 1µF bypass capacitor between REFBP

and REFBN. Place the 1µF REFBP-to-REFBN capacitor as close to the device as possible on the

 

 

 

 

 

 

same side of the PC board.

 

 

 

Channel B Positive Reference I/O. Channel B conversion range is ±2/3 x (VREFBP - VREFBN). Bypass

11

REFBP

REFBP with a 0.1µF capacitor to GND. Connect a 10µF and a 1µF bypass capacitor between REFBP

and REFBN. Place the 1µF REFBP-to-REFBN capacitor as close to the device as possible on the

 

 

 

 

 

 

same side of the PC board.

12

COMB

Channel A Common-Mode Voltage I/O. Bypass COMB to GND with a 0.1µF capacitor.

 

 

 

 

 

15

INBN

Channel B Negative Analog Input

 

 

 

 

 

16

INBP

Channel B Positive Analog Input

 

 

 

 

 

 

 

 

Differential/Single-Ended Input Clock Drive. This input selects between single-ended or differential clock

18

DIFFCLK/

input drives.

SECLK

DIFFCLK/SECLK = GND: Selects single-ended clock input drive.

 

 

 

 

 

DIFFCLK/SECLK = OVDD: Selects differential clock input drive.

19

CLKN

Negative Clock Input. In differential clock input mode (DIFFCLK/SECLK = OVDD), connect a differential

clock signal between CLKP and CLKN. In single-ended clock mode (DIFFCLK/SECLK = GND), apply the

 

 

 

clock signal to CLKP and connect CLKN to GND.

20

CLKP

Positive Clock Input. In differential clock input mode (DIFFCLK/SECLK = OVDD), connect a differential

clock signal between CLKP and CLKN. In single-ended clock mode (DIFFCLK/SECLK = GND), apply

 

 

 

the single-ended clock signal to CLKP and connect CLKN to GND.

21

DIV2

Divide-by-Two Clock-Divider Digital Control Input. See Table 2 for details.

 

 

 

 

 

22

DIV4

Divide-by-Four Clock-Divider Digital Control Input. See Table 2 for details.

 

 

 

 

 

 

23–26, 61,

VDD

Analog Power Input. Connect VDD to a 3.15V to 3.60V power supply. Bypass VDD to GND with a parallel

62, 63

capacitor combination of 10µF and 0.1µF. Connect all VDD pins to the same potential.

 

27, 43, 60

OVDD

Output-Driver Power Input. Connect OVDD to a 1.7V to VDD power supply. Bypass OVDD to GND with a

parallel capacitor combination of 10µF and 0.1µF.

 

 

 

 

 

 

 

 

28, 29, 45,

N.C.

No Connection

46

 

 

 

 

 

 

 

 

12 ______________________________________________________________________________________

Page 12
Image 12
Maxim MAX12527 manual Pin Description, PIN Name Function, Same side of the PC board