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TI TLC7225CDW

Manufacturer
MPN
TLC7225CDW
LCSC Part #
C2865474
Packaging
SOIC-24-300mil
Customer #
Key Attributes
QUADRUPLE 8bit DIGITAL-TO-ANALOG CONVERTERS
DatasheetTI TLC7225CDW
RoHS Compliance1 documents available
Alternative Parts5
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement
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QtyUnit Price(Reference Only)Total Amount
1+$ 12.5421$ 12.54
200+$ 4.8541$ 970.82
500+$ 4.684$ 2342.00
1,000+$ 4.599$ 4599.00
Standard Packaging25/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Data Acquisition/Digital to Analog Converters (DAC)
ManufacturerTI
PackagingSOIC-24-300mil
Settling Time5us
Quiescent Current (Iq)-
Operating Temperature0℃~+70℃
Voltage - Supply11.4V~16.5V
FunctionBipolar output;Integrated buffer
Integral non - linearity1LSB
Number of Channels4
Resolution (Bits)8;-
Interface TypeParallel

Features

AI Translation
  • Four 8-bit D/A converters with independent references
  • Direct bipolar operation without external level-shift amplifiers
  • Microprocessor compatible
  • TTL/CMOS compatible
  • Single-supply operation capable
  • Simultaneous update capability
  • Binary input coding
  • Process control
  • Automatic test equipment
  • Automatic calibration of large system parameters such as gain/offset
  • The TLC7225 consists of four 8-bit voltage-output DACs with output buffer amplifiers and interface logic featuring dual-register buffering.
  • Each DAC has an individual on-chip latch. Data is transferred through a common 8-bit TTL/CMOS-compatible (5 V) input port into one of the data latches.
  • Control inputs A0 and A1 determine which DAC is loaded when WR goes low. Only the data stored in the DAC registers determines the analog output of the converters.
  • Dual-register buffering allows simultaneous update of all four outputs under LDAC control.
  • All logic inputs are compatible with both TTL and CMOS levels, and the control logic is speed-compatible with most 8-bit microprocessors.
  • Each DAC includes an output buffer amplifier capable of driving up to 5 mA of output current.
  • TLC7225 performance is specified under dual-supply operation for input reference voltages from 2 V to VDD - 4 V.
  • The voltage-mode DAC configuration enables TLC7225 single-supply rail operation with a 10 V reference voltage.
  • The TLC7225 is fabricated using a specially developed LinBiCMOS process, allowing high-speed digital logic circuits and precision analog circuits to be integrated on the same die.
  • The TLC7225 features a common 8-bit data bus and individual DAC latches, providing a flexible control architecture for simple microprocessor interfacing.
  • All latch enable signals are level-triggered.
  • Integration of four DACs, four op-amps, and interface logic in a 0.3-inch wide 24-pin SOIC package significantly reduces board space requirements and improves reliability in systems using multiple converters.
  • Pin layout is optimized for board layout, with all analog inputs and outputs at one end of the package and all digital inputs at the other.
  • TLC7225C operating temperature range: 0℃ to 70℃. TLC7225I operating temperature range: -25℃ to 85℃.
  • For the TLC7225 to operate within rated specifications, the input reference voltage must be at least 4 V below the supply voltage at the VDD terminal.
  • The specified operating range for the TLC7225 is VDD from 12 V ±5 V.
  • Applying VSS = -5 V improves zero-code error, enhances output sink capability near AGND, and improves negative settling time.
  • Performance is specified under dual-supply operation for reference voltages in the range of 2 V to (VDD - 4 V).
  • The TLC7225 contains four identical 8-bit voltage-mode DACs, each with an individual reference input.
  • The converter output voltage has the same polarity as the reference voltage, enabling single-supply operation.
  • The input impedance of any reference input is code-dependent and can range from a minimum of 1.4 kΩ to open circuit.
  • The node capacitance at the reference terminal is also code-dependent, typically ranging from 60 pF to 300 pF.
  • Each voltage-mode DAC output is buffered by a unity-gain non-inverting amplifier.
  • The buffer amplifier can produce 10 V across a 2-kΩ load and can drive capacitive loads up to 3300 pF.
  • The TLC7225 supports single-supply or dual-supply operation; dual-supply operation enhances certain performance parameters not achievable with single-supply operation.
  • In single-supply operation (VSS = 0 V = AGND), the amplifier sink capability is typically 400 μA but decreases as the output voltage approaches AGND.
  • Connecting VSS to -5 V maintains the full 400 μA sink capability across the entire output voltage range.
  • Settling time for negative-going output signals near AGND is also affected by VSS. Negative settling time under single-supply operation is longer than under dual-supply operation. Positive settling time is unaffected by VSS.
  • In addition, a negative VSS provides greater headroom for the output amplifier, yielding improved zero-code performance and better output slew rate in single-supply mode.
  • The TLC7225 digital inputs are compatible with TTL or 5 V CMOS levels.
  • To minimize supply current, it is recommended to drive digital input voltages as close to the supply rails (VDD and DGND) as possible.
  • The TLC7225 contains two registers per DAC: an input register and a DAC register.
  • Address lines A0 and A1 select which input register accepts data from the input port.
  • When the WR signal is low, the input latch of the selected DAC is transparent.
  • Data is latched into the address-specified input register on the rising edge of WR.

Applications

AI Translation
  • Process control
  • Automatic test equipment
  • Auto-calibration of large system parameters, e.g., gain/offset

Alternative Parts

MPNManufacturerAlternative TypePackagingAvailabilityUnit Price
TLC7225IDWTISimilarSOIC-24-300mil3$ 12.0832
TLC7225CDWRTIAlt. PackagingSOIC-24-300mil0$ 8.2132
AD7225KRZADISimilarSOIC-24-300mil0$ 37.2625
AD7225LRZADISimilarSOIC-24-300mil0$ 39.2675
MAX505BCWG+TMAXIMSimilarSO-24-300mil0$ 14.9916
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