MCP4921-E/SN Microchip Technology, MCP4921-E/SN Datasheet - Page 24

• Manufacturer Part Number: MCP4921-E/SN
• Description: IC DAC 12BIT SNGL W/SPI 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4921-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
• Package: 8SOIC N
• Architecture: Resistor-String
• Digital Interface Type: Serial (3-Wire, SPI, Microwire)
• Number Of Outputs Per Chip: 1
• Output Type: Voltage
• Full Scale Error: 1 %FSR
• Integral Nonlinearity Error: ±12 LSB
• Maximum Settling Time: 4.5(Typ) us
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP4901/4911/4921
REGISTER 5-1:
REGISTER 5-2:
REGISTER 5-3:
Where:
DS22248A-page 24
bit 15
bit 14
bit 13
bit 12
bit 11-0
bit 15
bit 15
bit 15
Legend
R = Readable bit
-n = Value at POR
W-x
W-x
W-x
0
0
0
BUF
BUF
BUF
W-x
W-x
W-x
0 = Write to DAC register
1 = Ignore this command
BUF: V
1 = Buffered
0 = Unbuffered
GA: Output Gain Selection bit
1 = 1x (V
0 = 2x (V
SHDN: Output Shutdown Control bit
1 = Active mode operation. V
0 = Shutdown the device. Analog output is not available. V
D11:D0: DAC Input Data bits. Bit x is ignored.
W-x
W-x
W-x
GA
GA
GA
REF
OUT
OUT
SHDN
SHDN
SHDN
WRITE COMMAND REGISTER FOR MCP4921 (12-BIT DAC)
WRITE COMMAND REGISTER FOR MCP4911 (10-BIT DAC)
WRITE COMMAND REGISTER FOR MCP4901 (8-BIT DAC)
Input Buffer Control bit
W-0
W-0
W-0
= V
= 2 * V
REF
W-x
D11
W-x
W-x
D9
D7
REF
* D/4096)
W = Writable bit
1 = bit is set
* D/4096)
W-x
D10
W-x
W-x
D8
D6
OUT
W-x
W-x
W-x
D9
D7
D5
is available. 
W-x
W-x
W-x
D8
D6
D4
W-x
W-x
W-x
D7
D5
D3
U = Unimplemented bit, read as ‘0’
0 = bit is cleared
W-x
W-x
W-x
D6
D4
D2
OUT
W-x
W-x
W-x
D5
D3
D1
pin is connected to 500 ktypical)
W-x
W-x
W-x
D4
D2
D0
 2010 Microchip Technology Inc.
W-x
W-x
W-x
D3
D1
x = bit is unknown
x
W-x
W-x
W-x
D2
D0
x
W-x
W-x
W-x
D1
x
x
W-x
W-x
W-x
D0
bit 0
bit 0
bit 0
x
x