TC1321EOA Microchip Technology, TC1321EOA Datasheet - Page 7

• Manufacturer Part Number: TC1321EOA
• Description: IC DAC 10BIT 2WIRE I2C 8SOIC
• Manufacturer: Microchip Technology

Specifications of TC1321EOA

• Number Of Converters: 1
• Package / Case: 8-SOIC (3.9mm Width)
• Settling Time: 10µs
• Number Of Bits: 10
• Data Interface: I²C
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Resolution: 10 bit
• Interface Type: Serial (2-Wire, I2C)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 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

3.0
The TC1321 is a monolithic 10-bit digital-to-analog
converter that is designed to operate from a single
supply that can range from 2.7V to 5.5V. The DAC
consists of a data register (DATA), a configuration
register (CONF), and a current output amplifier. The
TC1321 uses an external reference which also
determines the maximum output voltage.
The TC1321 uses a current steering DAC based on an
array of matched current sources. This current, along
with a precision resistor, converts the contents of the
DATA Register and V
that is given by:
3.1
The reference pin, V
input. Because of this, the load regulation of the
reference source needs only to be able to tolerate
leakage levels of current (less than 1 µA). V
accepts a voltage range from 0 to (V
capacitance is typically 10 pF.
 2010 Microchip Technology Inc.
DETAILED DESCRIPTION
Reference Input
V
OUT
REF
=
REF
V
, is a buffered high-impedance
REF
into an output voltage, V

DATA
--------------- -
1024
DD
– 1.2V). Input
OUT
REF
,
3.2
The TC1321 DAC output is buffered with an internal
unity gain rail-to-rail input/output amplifier with a typical
slew rate of 0.8V/µs. Maximum full scale transition
settling time is 10 µsec to within ±1/2LSB when loaded
with 1 k in parallel with 100 pF.
3.3
The TC1321 allows the host to put it into a Low Power
(I
In this mode, the D/A conversion is halted. The SMBus
port operates normally. Standby mode is enabled by
setting the SHDN bit in the CONFIG register.
summarizes this operation.
TABLE 3-1:
3.4
The TC1321 is internally programmed to have a default
SMBus address value of 1001 000b. Seven other
addresses are available by custom order (contact
Microchip
Figure 3-1
protocol.
DD
= 0.5 µA, typically) Standby mode.
SHDN Bit
Output Amplifier
Standby Mode
SMBus Slave Address
for the location of address bits in SMBus
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0
1
STANDBY MODE OPERATION
Operating Mode
TC1321
Standby
Normal
DS21387C-page 7
Service). See
Table 3-1