MAX1333 Maxim Integrated Products, MAX1333 Datasheet - Page 12

• Manufacturer Part Number: MAX1333
• Description: (MAX1332 / MAX1333) True-Differential 12-Bit ADCs
• Manufacturer: Maxim Integrated Products

3Msps/2Msps, 5V/3V, 2-Channel, True-
Differential 12-Bit ADCs
12
PIN
______________________________________________________________________________________
10
11
12
13
14
15
16
—
1
2
3
4
5
6
7
8
9
BIP/UNI
CHSEL
CNVST
NAME
AIN0P
AIN0N
AIN1P
AIN1N
AGND
DGND
AGND
SHDN
DOUT
SCLK
DV
AV
REF
EP
DD
DD
Positive Analog-Input Channel 0
Negative Analog-Input Channel 0
Positive Analog-Input Channel 1
Negative Analog-Input Channel 1
External Reference Voltage Input. V
and a 1µF.
Shutdown Input. Pull SHDN low to enter full power-down mode. Drive SHDN high to resume normal
operation regardless of previous software entered into power-down mode.
Analog-Input-Mode Select. Drive BIP/UNI high to select bipolar-input mode. Pull BIP/UNI low to select
unipolar-input mode.
Analog Ground. Connect all AGNDs and EP to the same potential.
Channel-Select Input. Drive CHSEL high to select channel 1. Pull CHSEL low to select channel 0.
Conversion-Start Input. The first rising edge of CNVST powers up the MAX1332/MAX1333 and begins
acquiring the analog input. A falling edge samples the analog input and starts a conversion. CNVST
also controls the power-down mode of the device (see the Partial Power-Down (PPD) and Full Power-
Down (FPD) Mode section).
Serial-Clock Input. Clocks data out of the serial interface. SCLK also sets the conversion speed.
Serial-Data Output. Data is clocked out on the rising edge of SCLK (see the Starting a Conversion
section).
Positive-Digital-Supply Input. DV
MAX1332/MAX1333. Connect DV
0.1µF capacitor in parallel with a 1µF capacitor. Place the bypass capacitors as close to the device
as possible.
Digital Ground. Ensure that the potential difference between AGND and DGND is less than ±0.3V.
Positive-Analog-Supply Input. AV
MAX1332/MAX1333. Connect AV
AV
in parallel with a 1µF capacitor. Place the bypass capacitors as close to the device as possible.
Analog Ground. Connect all AGNDs and EP to the same potential.
E xp osed P ad d l e. Inter nal l y connected to AGN D . C onnect the exp osed p ad d l e to the anal og g r ound p l ane.
DD
to a 2.7V to 3.6V power supply for the MAX1333. Bypass AV
DD
DD
DD
DD
REF
is the positive supply input for the digital section of the
is the positive supply input for the analog section of the
to a 2.7V to 3.6V power supply. Bypass DV
to a 4.75V to 5.25V power supply for the MAX1332. Connect
= 1V to (AV
FUNCTION
DD
+ 50mV). Bypass REF to AGND with a 0.1µF
DD
to AGND with a 0.1µF capacitor
Pin Description
DD
to DGND with a