Rainbow Electronics MAX5189 - Manual (Page 7)

MAX5186/MAX5189
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-Output DACs
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Pin Description
Reference Input REFR 24
Digital Ground DGND 23
Digital Supply, +2.7V to +3.3V DV DD 22
Data Bit D7 (MSB) D7 21
7 PD
Power-Down Select
0: Enter DAC standby mode (DACEN = DGND) or power-up DAC (DACEN = DV
DD ).
1: Enter shutdown mode.
3 OUT1N Negative Analog Output, DAC1. Current output for MAX5186; voltage output for MAX5189.
Data Bits D1–D6 D1–D6 15–20
Data Bit D0 (LSB) D0 14
Digital Ground DGND 13
Digital Ground DGND 12
Active-Low Reference Enable. Connect to DGND to activate on-chip +1.2V reference. REN 11
No Connect. Do not connect to this pin. N.C. 10
Clock input CLK 9
Active-Low Chip Select CS 8
NAME FUNCTION
1 CREF1 Reference Bias Bypass, DAC1
2 OUT1P Positive Analog Output, DAC1. Current output for MAX5186; voltage output for MAX5189.
PIN
6 DACEN
DAC Enable, Digital Input
0: Enter DAC standby mode with PD = DGND.
1: Power-up DAC with PD = DGND.
X: Enter shutdown mode with PD = DV
DD (X = don’t care).
5 AV DD Analog Positive Supply, +2.7V to +3.3V
4 AGND Analog Ground
Reference Bias Bypass, DAC2 CREF2 28
Positive Analog Output, DAC2. Current output for MAX5186; voltage output for MAX5189. OUT2P 27
Negative Analog Output, DAC2. Current output for MAX5186; voltage output for MAX5189. OUT2N 26
Reference Output REFO 25