AD7233BN Analog Devices Inc, AD7233BN Datasheet - Page 5

• Manufacturer Part Number: AD7233BN
• Description: IC DAC 12BIT SRL W/AMP 8-DIP
• Manufacturer: Analog Devices Inc
• Series: DACPORT®r

Specifications of AD7233BN

• Rohs Status: RoHS non-compliant
• Settling Time: 10µs
• Number Of Bits: 12
• Data Interface: Serial
• Number Of Converters: 1
• Voltage Supply Source: Dual ±
• Power Dissipation (max): 168mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)

There are two ways in which the DAC latch and hence the ana-
log output may be updated. The status of the LDAC input is
examined after SYNC is taken low. Depending on its status, one
of two update modes is selected.
If LDAC = 0 then the automatic update mode is selected. In
this mode the DAC latch and analog output are updated auto-
matically when the last bit in the serial data stream is clocked in.
The update thus takes place on the sixteenth falling SCLK edge.
SCLK
SYNC
LDAC
SDIN
SYNC
LDAC
SCLK
SDIN
DON’T CARE
t
2
DB15
DON’T CARE
DB14
t
1
DON’T CARE
COUNTER/
DECODER
RESET
DB13
AUTO-UPDATE
CIRCUITRY
16
DON’T CARE
DB12
GATING
SIGNAL
If LDAC = 1 then the automatic update is disabled and the
DAC latch is updated by taking LDAC low any time after the
16-bit data transfer is complete. The update now occurs on the
falling edge of LDAC. This facility is useful for simultaneous
update in multi-DAC systems. Note that the LDAC input must
be taken back high again before the next data transfer is initiated.
t
4
DB11
MSB
GATING
t
5
SCLK
INPUT SHIFT REGISTER (16 BITS)
DAC LATCH (12 BITS)
DB1
DB0
LSB
t
3
t
6
t
7
AD7233
t
8