Datasheet

MAX532
Dual, Serial-Input,
Voltage-Output, 12-Bit MDAC
6 _______________________________________________________________________________________
______________________________________________________________Pin Description
A
AGNDA
A = VOUTA, 5V/div
TIMEBASE = 2µs/div
VREFA = ±10V SQUARE WAVE
LARGE-SIGNAL PULSE RESPONSE
____________________________Typical Operating Characteristics (continued)
(V
DD
= 15V, V
SS
= -15V, R
L
= 2kΩ, C
L
= 100pF, unless otherwise noted.)
PIN NAME FUNCTION
1
RFBA Feedback Resistor for DACA
2 VREFA Reference Input for DACA
3 VOUTA Voltage Output for DACA
4 AGNDA Analog Ground for DACA
5 AGNDB Analog Ground for DACB
6 VOUTB Voltage Output for DACB
7 VREFB Reference Input for DACB
8 RFBB Feedback Resistor for DACB
9
V
SS
Negative Supply Voltage
10 DGND Digital Ground
11 SCLK Serial Clock Input
12 DOUT
Serial Data Output. Open-drain N-channel MOSFET output: requires external pull-up resis-
tor. Data on DOUT changes on the falling edge of SCLK. Serial output data is delayed 24
clock cycles from DIN.
13 DIN
Serial Data Input. CMOS- and TTL-compatible input. Data is clocked into DIN on the rising
edge of SCLK. CS must be low for data to be clocked in.
16 V
DD
Positive Supply Voltage
15
LDAC
Asynchronous Load DAC Input, active low. DAC latches are updated when CS is high and
LDAC is low.
14
CS
Chip-Select Input, active low. Data is shifted in and out when CS is low. DAC latches are
updated when CS is high and LDAC is low.
A
AGNDA
A = V
OUTA
, 50mV/div
TIMEBASE = 2µs/div
V
REFA
= ±100mV SQUARE WAVE
SMALL-SIGNAL PULSE RESPONSE