MCP4922-E/P Microchip Technology, MCP4922-E/P Datasheet - Page 21

• Manufacturer Part Number: MCP4922-E/P
• Description: IC DAC 12BIT DUAL W/SPI 14DIP
• Manufacturer: Microchip Technology

Specifications of MCP4922-E/P

• Number Of Converters: 2
• Package / Case: 14-DIP (0.300", 7.62mm)
• Settling Time: 4.5µs
• Number Of Bits: 12
• Data Interface: Serial, SPI™
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Resolution: 12 bit
• Interface Type: Serial (3-Wire, SPI, Microwire)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.2.4
The user can shut down each DAC channel selectively
by using a software command or shut down all chan-
nels by using the SHDN pin. During Shutdown mode,
most of the internal circuits in the channel that was shut
down are turned off for power savings. The serial inter-
face remains active, thus allowing a write command to
bring the device out of the Shutdown mode. There will
be no analog output at the channel that was shut down
and the V
resistive load (500 k typical.
analog output stage during the Shutdown mode.
The condition of the Power-on Reset circuit during the
shutdown is as follows:
a)
b)
The device will remain in Shutdown mode until the
SHDN pin is brought to high or a write command with
<SHDN> bit = 1 is latched into the device. When a DAC
is changed from Shutdown to Active mode, the output
settling time takes less than 10 µs, but more than the
standard active mode settling time (4.5 µs).
 2010 Microchip Technology Inc.
Turned-off, if the shutdown occurred by the
SHDN pin;
On, if the shutdown occurred by the software.
OUT
SHUTDOWN MODE
pin is internally switched to a known
Figure 4-4
shows the
FIGURE 4-4:
Mode.
MCP4902/4912/4922
Resistive String DAC
Op
Amp
Control Circuit
Power-Down
Output Stage for Shutdown
Resistive
Load
DS22250A-page 21
500 k
V
OUT