MCP4902-E/ST Microchip Technology, MCP4902-E/ST Datasheet - Page 21
MCP4902-E/ST
Manufacturer Part Number
MCP4902-E/ST
Description
DAC 8BIT DUAL W/SPI 14TSSOP
Manufacturer
Microchip Technology
Datasheet
1.MCP4922-EP.pdf
(48 pages)
Specifications of MCP4902-E/ST
Number Of Converters
2
Settling Time
4.5µs
Package / Case
14-TSSOP
Number Of Bits
8
Data Interface
Serial, SPI™
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Number Of Dac Outputs
2
Resolution
8 bit
Interface Type
SPI
Supply Voltage (max)
6.5 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 55 C
Supply Current
350 uA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power Dissipation (max)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP4902-E/ST
Manufacturer:
MICROCHIP
Quantity:
12 000
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