MAX1134 Datasheet, PDF (7/18 Pages) Maxim Integrated Products – 16-Bit ADCs, 150ksps, 3.3V Single Supply

16-Bit ADCs, 150ksps, 3.3V Single Supply
Pin Description
PIN NAME
FUNCTION
1
REF ADC Reference Input. Connect a 2.048V voltage source to REF. Bypass REF to AGND with a 4.7µF capacitor.
2
AV_DD Analog Supply. Connect to pin 4.
3
AGND Analog Ground. This is the primary analog ground (star ground).
4
AV_DD Analog Supply, 3.3V ±5%. Bypass AV_DD to AGND (pin 3) with a 0.1µF capacitor.
5
DGND Digital Ground
6
SHDN Shutdown Control Input. Drive SHDN low to put the ADC in shutdown mode.
7
P2 User-Programmable Output 2
8
P1 User-Programmable Output 1
9
P0 User-Programmable Output 0
Serial Strobe Output. In internal clock mode, SSTRB goes low when the ADC begins a conversion and goes
10
SSTRB high when the conversion is finished. In external clock mode, SSTRB pulses high for one clock period before
the MSB decision. It is high impedance when CS is high in external clock mode.
11
DOUT
Serial Data Output. MSB first, straight binary format for unipolar input, two’s complement for bipolar input.
Each bit is clocked out of DOUT at the falling edge of SCLK.
12
RST Reset Input. Drive RST low to put the device in the power-on default mode. See the Power-On Reset section.
13
SCLK
Serial Data Clock Input. Serial data on DIN is loaded on the rising edge of SCLK, and serial data is updated
on DOUT on the falling edge of SCLK. In external clock mode, SCLK sets the conversion speed.
14
DGND Digital Ground. Connect to pin 5.
15
DV_DD Digital Supply, 3.3V ±5%. Bypass DV_DD to DGND (pin 14) with a 0.1µF capacitor.
16
DIN Serial Data Input. Serial data on DIN is latched on the rising edge of SCLK.
17
CS
Chip-Select Input. Drive CS low to enable the serial interface. When CS is high, DOUT is high impedance. In
external clock mode, SSTRB is high impedance when CS is high.
18
CREF Reference Buffer Bypass. Bypass CREF to AGND (pin 3) with a 1µF capacitor.
19
AGND Analog Ground. Connect to pin 3.
20
AIN Analog Input
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