MCP4821-E/SN Microchip Technology, MCP4821-E/SN Datasheet - Page 14

• Manufacturer Part Number: MCP4821-E/SN
• Description: IC DAC 12BIT W/SPI 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4821-E/SN

• Number Of Converters: 1
• Package / Case: 8-SOIC (3.9mm Width)
• 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: Surface Mount
• 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: SMD/SMT
• 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

MCP4821/MCP4822
3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
V
supply is relative to AV
5.5V. A decoupling capacitor on V
to achieve maximum performance.
3.2
CS is the chip select input, which requires an active-low
signal to enable serial clock and data functions.
3.3
SCK is the SPI compatible serial clock input.
3.4
SDI is the SPI compatible serial data input.
3.5
LDAC (the latch DAC synchronization input) transfers
the input latch registers to the DAC registers (output
latches) when low. Can also be tied low if transfer on
the rising edge of CS is desired.
DS21953A-page 14
DD
MCP4821
Pin No.
is the positive power supply input. The input power
—
1
2
3
4
5
6
7
8
PIN DESCRIPTIONS
Positive Power Supply Input (V
Chip Select (CS)
Serial Clock Input (SCK)
Serial Data Input (SDI)
Latch DAC Input (LDAC)
PIN FUNCTION TABLE
MCP4822
Pin No.
SS
—
1
2
3
4
5
6
7
8
and can range from 2.7V to
DD
is recommended
Symbol
SHDN
V
V
LDAC
AV
SCK
V
SDI
OUTB
OUTA
CS
DD
SS
DD
)
Positive Power Supply Input (2.7V to 5.5V)
Chip Select Input
Serial Data Input
Synchronization input used to transfer DAC settings from serial
latches to output latches
Hardware Shutdown Input
DAC
Analog Ground
DAC
Serial Clock Input
B
A
Output
Output
3.6
SHDN is the hardware shutdown input that requires an
active-low input signal to configure the DACs in their
low-power Standby mode.
3.7
V
amplifier drives these pins with a range of AV
3.8
AV
OUTA
SS
is the analog ground pin.
and V
Hardware Shutdown Input (SHDN)
DAC
Analog Ground (AV
OUTB
x
Function
Outputs (V
are DAC outputs. The DAC output
© 2005 Microchip Technology Inc.
OUTA
SS
, V
)
OUTB
SS
)
to V
DD
.