SBAS337E April   2005  – March 2018 DAC7811

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Block Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics: VDD = 5 V
    7. 6.7 Typical Characteristics: VDD = 2.7 V
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Serial Interface
      2. 7.4.2 Input Shift Register
      3. 7.4.3 SYNC Interrupt (Stand-Alone Mode)
      4. 7.4.4 Daisy-Chain
      5. 7.4.5 Control Bits C3 to C0
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Unipolar Operation Using DAC7811
      2. 8.1.2 Bipolar Operation Using the DAC7811
      3. 8.1.3 Stability Circuit
      4. 8.1.4 Amplifier Selection
      5. 8.1.5 Programmable Current Source Circuit
    2. 8.2 Typical Application
      1. 8.2.1 Single Supply Unipolar Multiplying DAC
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resource
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.1.4 Amplifier Selection

There are many choices and many differences in selecting the proper operational amplifier for a multiplying DAC (MDAC). Making the analog signal out of the MDAC is one critical aspect. However, there are also other issues to take into account such as amplifier noise, input bias current, and offset voltage, as well as MDAC resolution and glitch energy. Table 4 and Table 5 suggest some suitable operational amplifiers for low power, fast settling, and high-speed applications. A greater selection of operational amplifiers can be found at www.ti.com/amplifier.

Table 4. Suitable Precision Operational Amplifiers from Texas Instruments

PRODUCTTOTAL
SUPPLY
VOLTAGE
(V) (min)		TOTAL
SUPPLY
VOLTAGE
(V) (max)		IQ
PER
CHANNEL
(max)
(mA)		GBW
(typ)
(MHz)		SLEW
RATE
(typ)
(V/μs)		OFFSET
DRIFT
(typ)
(μV/°C)		IIB
(max)
(pA)		CMRR
(min)
(dB)		PACKAGE/
LEAD		DESCRIPTION
LOW POWER
OPA703 4 12 0.2 1 0.6 4 10 70 SOT5-23, PDIP-8, SOIC-8 12V, CMOS, Rail-to-Rail I/O, Operational Amplifier
OPA735 2.7 12 0.75 1.6 1.5 0.01 200 115 SOT5-23, SOIC-8 0.05μV/°C (max), Single-Supply CMOS Zero-Drift Series Operational Amplifier
OPA344 2.7 5.5 0.25 1 1 2.5 10 80 SOT5-23, PDIP-8, SOIC-8 Low Power, Single-Supply, Rail-To-Rail Operational Amplifiers MicroAmplifier Series
OPA348 2.1 5.5 0.065 1 0.5 2 10 70 SC5-70, SOT5-23, SOIC-8 1MHz, 45μA, Rail-to-Rail I/O, Single Op Amp
OPA277 4 36 0.825 1 0.8 0.1 1000 130 PDIP-8, SOIC-8,
SON-8		 High Precision Operational Amplifiers
FAST SETTLING
OPA350 2.7 5.5 7.5 38 22 4 10 76 MSOP-8, PDIP-8, SOIC-8 High-Speed, Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier Series
OPA727 4 12 6.5 20 30 0.6 500 86 MSOP-8, SON-8 e-trim 20MHz, High Precision CMOS Operational Amplifier
OPA227 5 36 3.8 8 2.3 0.1 10000 120 PDIP-8, SOIC-8 High Precision, Low Noise Operational Amplifiers

Table 5. Suitable High Speed Operational Amplifiers from Texas Instruments (Multiple Channel Options)

PRODUCTSUPPLY
VOLTAGE
(V)		GBW
PRODUCT
(MHz)		VOLTAGE
NOISE
nV/√Hz		GBW
(typ)
(MHz)		SLEW
RATE
(V/μs)		VOS
(typ)
(μV)		VOS
(max)
(μV)		CMRR
(min)
(dB)		PACKAGE/
LEAD		DESCRIPTION
SINGLE CHANNEL
THS4281 ±2.7 to ±15 38 12.5 35 500 3500 500 1000 SOT5-23, MSOP-8,
SOIC-8		 Very Low-Power High Speed Rail-To-Rail Input/Output Voltage Feedback Operational Amplifier
THS4031 ±4.5 to ±16.5 200 1.6 100 500 3000 3000 8000 CDIP-8, MSOP-8, SOIC-8 100-MHz Low Noise Voltage-Feedback Amplifier
THS4631 ±4.5 to ±16.5 210 7 900 260 2000 50pA 2 SOIC-8, MSOP-8 High Speed FET-Input Operational Amplifier
OPA656 ±4 to ±6 230 7 290 250 2600 2pA 5pA SOIC-8, SOT5-23 Wideband, Unity Gain Stable FET-Input Operational Amplifier
OPA820 ±2.5 to ±6 280 2.5 240 200 1200 900 23,000 SOIC-8, SOT5-23 Unity Gain Stable, Low Noise, Voltage Feedback Operational Amplifier
DUAL CHANNEL
THS4032 ±4.5 to ±16.5 200 1.6 100 500 3000 3000 8000 SOIC-8, MSOP-8 100-MHz Low Noise Voltage-Feedback Amplifier, Dual
OPA2822 ±2 to ±6.3 220 2 170 200 1200 9600 12000 SOIC-8, MSOP-8 SpeedPlus Dual Wideband, Low-Noise Operational Amplifier