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TLC7528CDW

TLC7528CDW

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    SOIC20_300MIL

  • 描述:

    TLC7528 8 位,0.1us 双路 MDAC,并行输入,DSP 快速控制信号,简单微 I/F

  • 数据手册
  • 价格&库存
TLC7528CDW 数据手册
                   SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 D Easily Interfaced to Microprocessors D On-Chip Data Latches D Monotonic Over the Entire A/D Conversion D D D D Range Interchangeable With Analog Devices AD7528 and PMI PM-7528 Fast Control Signaling for Digital Signal Processor (DSP) Applications Including Interface With TMS320 Voltage-Mode Operation CMOS Technology DW, N OR PW PACKAGE (TOP VIEW) AGND OUTA RFBA REFA DGND DACA/DACB (MSB) DB7 DB6 DB5 DB4 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 OUTB RFBB REFB VDD WR CS DB0 (LSB) DB1 DB2 DB3 KEY PERFORMANCE SPECIFICATIONS FN PACKAGE (TOP VIEW) description The TLC7528C, TLC7528E, and TLC7528I are dual, 8-bit, digital-to-analog converters (DACs) designed with separate on-chip data latches and feature exceptionally close DAC-to-DAC matching. Data are transferred to either of the two DAC data latches through a common, 8-bit, input port. Control input DACA/DACB determines which DAC is to be loaded. The load cycle of these devices is similar to the write cycle of a random-access memory, allowing easy interface to most popular microprocessor buses and output ports. Segmenting the high-order bits minimizes glitches during changes in the most significant bits, where glitch impulse is typically the strongest. RFBA OUTA AGND OUTB RFBB 8 bits 1/2LSB 20mW 100ns 80ns REFA DGND DACA/DACB (MSB) DB7 DB6 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 REFB VDD WR CS DB0 (LSB) DB5 DB4 DB3 DB2 DB1 Resolution Linearity Error Power Dissipation at VDD = 5V Settling Time at VDD = 5V Propagation Delay Time at VDD = 5V These devices operate from a 5V to 15V power supply and dissipates less than 15mW (typical). The 2- or 4-quadrant multiplying makes these devices a sound choice for many microprocessor-controlled gain-setting and signal-control applications. It can be operated in voltage mode, which produces a voltage output rather than a current output. Refer to the typical application information in this data sheet. The TLC7528C is characterized for operation from 0°C to +70°C. The TLC7528I is characterized for operation from −25°C to +85°C. The TLC7528E is characterized for operation from − 40°C to +85°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. Copyright  2000−2008, Texas Instruments Incorporated     ! " #$%! "  &$'(#! )!%* )$#!" # ! "&%##!" &% !+% !%"  %," "!$%!" "!)) -!.* )$#! &#%""/ )%" ! %#%""(. #($)% !%"!/  (( &%!%"* POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 functional block diagram DB0 14 REFA 13 12 8 11 Data Inputs Input Buffer 10 Latch A 9 8 DB7 DACA/DACB WR CS ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ RFBA 4 8 2 OUTA DACA 1 AGND 7 8 6 16 Logic Control 15 ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ Latch B 8 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ DACB 18 REFB operating sequence tsu(CS) th(CS) tsu(DAC) th(DAC) CS DACA/DACB tw(WR) WR tsu(D) Data In Stable DB0 −DB7 2 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 th(D) 19 20 RFBB OUTB                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VDD (to AGND or DGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3V to 16.5V Voltage between AGND and DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± VDD Input voltage range, VI (to DGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3V to VDD + 0.3 Reference voltage, VrefA or VrefB (to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25V Feedback voltage VRFBA or VRFBB (to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25V Input voltage (voltage mode out A, out B to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3V to VDD + 0.3 Output voltage, VOA or VOB (to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25V Peak input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10µA Operating free-air temperature range, TA: TLC7528C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C TLC7528I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25°C to +85°C TLC7528E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to +85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C Case temperature for 10 seconds, TC: FN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C Lead temperature 1,6mm (1/16 inch) from case for 10 seconds: DW or N package . . . . . . . . . . . . . . +260°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. package/ordering information For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. recommended operating conditions VDD = 4.75V to 5.25V MIN NOM MAX VDD = 14.5V to 15.5V MIN NOM MAX ± 10 Reference voltage, VrefA or VrefB High-level input voltage, VIH ± 10 2.4 Low-level input voltage, VIL CS setup time, tsu(CS) 50 CS hold time, th(CS) V 13.5 0.8 UNIT V 1.5 V 50 ns 0 0 ns DAC select setup time, tsu(DAC) 50 50 ns DAC select hold time, th(DAC) 10 10 ns Data bus input setup time tsu(D) 25 25 ns Data bus input hold time th(D) 10 10 ns Pulse duration, WR low, tw(WR) 50 TLC7628C Operating free-air temperature, TA 50 ns 0 +70 0 +70 TLC7628I −25 +85 −25 +85 TLC7628E −40 +85 −40 +85 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 °C C 3                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 electrical characteristics over recommended operating free-air temperature range, VrefA = VrefB = 10V, VOA and VOB at 0V (unless otherwise noted) PARAMETER IIH IIL TEST CONDITIONS High-level input current VI = VDD VI = 0 Low-level input current VDD = 5V MIN TYP† MAX VDD = 15V MIN TYP† MAX 10 10 µA −10 µA 20 20 kΩ 5 Reference input impedance REFA or REFB to AGND IIkg 5 12 DAC data latch loaded with 00000000, VrefA = ± 10V ± 400 ± 200 OUTB DAC data latch loaded with 00000000, VrefB = ± 10V ± 400 ± 200 ± 1% ± 1% ∆VDD = ± 10% All digital inputs at VIHmin or VILmax 0.04 0.02 %/% 2 2 mA All digital inputs at 0V or VDD 0.5 0.5 mA DB0−DB7 10 10 pF WR, CS, DACA/DACB 15 15 pF DAC data latches loaded with 00000000 50 50 DAC data latches loaded with 11111111 120 120 Output leakage current DC supply sensitivity, ∆gain/∆VDD IDD Supply current (quiescent) IDD Supply current (standby) Ci Input capacitance Output capacitance (OUTA, OUTB) † All typical values are at TA = +25°C. 4 −10 OUTA Input resistance match (REFA to REFB) Co 12 UNIT POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 nA pF                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 operating characteristics over recommended operating free-air temperature range, VrefA = VrefB = 10V, VOA and VOB at 0V (unless otherwise noted) PARAMETER TEST CONDITIONS VDD = 5V MIN TYP MAX VDD = 15V MIN TYP MAX UNIT ± 1/2 ± 1/2 LSB Linearity error Settling time (to 1/2LSB) See Note 1 100 100 ns Gain error See Note 2 2.5 2.5 LSB −65 −65 −65 −65 REFA to OUTA AC feedthrough REFB to OUTB See Note 3 Temperature coefficient of gain See Note 4 0.007 Propagation delay (from digital input to 90% of final analog output current) See Note 5 80 REFA to OUTB See Note 6 77 77 REFB to OUTA See Note 7 77 77 Channel-to-channel isolation dB 0.0035 %FSR/°C 80 ns dB Digital-to-analog glitch impulse area Measured for code transition from 00000000 to 11111111, TA = +25°C 160 440 nV−s Digital crosstalk Measured for code transition from 00000000 to 11111111, TA = +25°C 30 60 nV−s Harmonic distortion NOTES: 1. 2. 3. 4. 5. 6. 7. Vi = 6V, f = 1kHz, TA = +25°C −85 −85 dB OUTA, OUTB load = 100Ω, Cext = 13pF; WR and CS at 0V; DB0−DB7 at 0V to VDD or VDD to 0V. Gain error is measured using an internal feedback resistor. Nominal full scale range (FSR) = Vref − 1LSB. Vref = 20V peak-to-peak, 100kHz sine wave; DAC data latches loaded with 00000000. Temperature coefficient of gain measured from 0°C to +25°C or from +25°C to +70°C. VrefA = VrefB = 10V; OUTA/OUTB load = 100Ω, Cext = 13pF; WR and CS at 0V; DB0−DB7 at 0V to VDD or VDD to 0V. Both DAC latches loaded with 11111111; VrefA = 20V peak-to-peak, 100kHz sine wave; VrefB = 0; TA = +25°C. Both DAC latches loaded with 11111111; VrefB = 20V peak-to-peak, 100kHz sine wave; VrefA = 0; TA = +25°C. PRINCIPLES OF OPERATION These devices contain two identical, 8-bit-multiplying DACs, DACA and DACB. Each DAC consists of an inverted R-2R ladder, analog switches, and input data latches. Binary-weighted currents are switched between DAC output and AGND, thus maintaining a constant current in each ladder leg independent of the switch state. Most applications require only the addition of an external operational amplifier and voltage reference. A simplified DAC circuit for DACA with all digital inputs low is shown in Figure 1. Figure 2 shows the DACA equivalent circuit. A similar equivalent circuit can be drawn for DACB. Both DACs share the analog ground terminal 1 (AGND). With all digital inputs high, the entire reference current flows to OUTA. A small leakage current (IIkg) flows across internal junctions, and as with most semiconductor devices, doubles every 10°C. Co is due to the parallel combination of the NMOS switches and has a value that depends on the number of switches connected to the output. The range of Co is 50pF to 120pF maximum. The equivalent output resistance (ro) varies with the input code from 0.8R to 3R where R is the nominal value of the ladder resistor in the R-2R network. These devices interface to a microprocessor through the data bus, CS, WR, and DACA/DACB control signals. When CS and WR are both low, the TLC7528 analog output, specified by the DACA/DACB control line, responds to the activity on the DB0−DB7 data bus inputs. In this mode, the input latches are transparent and input data directly affects the analog output. When either the CS signal or WR signal goes high, the data on the DB0−DB7 inputs are latched until the CS and WR signals go low again. When CS is high, the data inputs are disabled regardless of the state of the WR signal. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 PRINCIPLES OF OPERATION The digital inputs of these devices provide TTL compatibility when operated from a supply voltage of 5V. These devices can operate with any supply voltage in the range from 5V to 15V; however, input logic levels are not TTL-compatible above 5V. R R R REFA 2R 2R 2R 2R 2R RFB S1 S2 S3 RFBA S8 OUTA AGND DACA Data Latches and Drivers Figure 1. Simplified Functional Circuit for DACA RFBA RFB R OUTA REFA I 256 COUT IIkg AGND Figure 2. TLC7528 Equivalent Circuit, DACA Latch Loaded With 11111111 MODE SELECTION TABLE DACA/DACB CS WR DACA DACB L H X X L L H X L L X H Write Hold Hold Hold Hold Write Hold Hold L = low level, 6 H = high level, POST OFFICE BOX 655303 X = don’t care • DALLAS, TEXAS 75265                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION These devices are capable of performing 2-quadrant or full 4-quadrant multiplication. Circuit configurations for 2-quadrant and 4-quadrant multiplication are shown in Figure 3 and Figure 4. Table 1 and Table 2 summarize input coding for unipolar and bipolar operation, respectively. VI(A) ± 10 V R1 (see Note A) RFBA OUTA 8 Latch VOA AGND Latch RECOMMENDED TRIM RESISTOR VALUES R1, R3 R2, R4 500 Ω 150 Ω ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ R4 (see Note A) OUTB 8 DACB C2 (see Note B) + Control Logic ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ RFBB − 8 6 CS 16 WR 5 DGND DACA + 8 Input Buffer 7 15 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ REFA DB7 DACA / DACB C1 (see Note B) − 17 VDD 14 DB0 R2 (see Note A) VOB AGND REFB AGND R3 (see Note A) VI(B) ± 10 V NOTES: A. R1, R2, R3, and R4 are used only if gain adjustment is required. See table for recommended values. Make gain adjustment with digital input of 255. B. C1 and C2 phase compensation capacitors (10pF to 15pF) are required when using high-speed amplifiers to prevent ringing or oscillation. Figure 3. Unipolar Operation (2-Quadrant Multiplication) POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION VI(A) ± 10 V R6 20 kΩ (see Note B) R1 (see Note A) DACA/ DACB 15 CS 16 WR 5 OUTA 8 DACA 8 ÎÎÎ ÎÎÎ Latch A1 AGND RFBB Control Logic DGND Latch OUTB DACB REFB AGND R8 20 kΩ A3 AGND VOA R11 5 kΩ R4 (see Note A) C2 (see Note C) 8 − A2 + (see Note B) + 6 ÎÎÎ ÎÎÎ R9 10 kΩ (see Note B) R3 (see Note A) A4 + 7 8 − Input Buffer R5 20 kΩ R7 10 kΩ − DB7 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ C1 (see Note C) + DB0 17 14 R2 (see Note A) − VDD RFBA VOB R11 5 kΩ AGND R10 20 kΩ (see Note B) VI(B) ± 10 V NOTES: A. R1, R2, R3, and R4 are used only if gain adjustment is required. See table in Figure 3 for recommended values. Adjust R1 for VOA = 0V with code 10000000 in DACA latch. Adjust R3 for VOB = 0V with 10000000 in DACB latch. B. Matching and tracking are essential for resistor pairs R6, R7, R9, and R10. C. C1 and C2 phase compensation capacitors (10pF to 15pF) may be required if A1 and A3 are high-speed amplifiers. Figure 4. Bipolar Operation (4-Quadrant Operation) Table 1. Unipolar Binary Code DAC LATCH CONTENTS MSB LSB† ANALOG OUTPUT DAC LATCH CONTENTS MSB LSB‡ ANALOG OUTPUT 11111111 10000001 10000000 01111111 00000001 00000000 −VI (255/256) −VI (129/256) −VI (128/256) = − Vi/2 −VI (127/256) −VI (1/256) −VI (0/256) = 0 11111111 10000001 10000000 01111111 00000001 00000000 VI (127/128) VI (1/128) 0V −VI (1/128) −VI (127/128) −VI (128/128) † 1LSB = (2−8)VI 8 Table 2. Bipolar (Offset Binary) Code ‡ 1LSB = (2−7)VI POST OFFICE BOX 655303 • DALLAS, TEXAS 75265                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION microprocessor interface information 8 Address Bus A8 −A15 DACA/DACB Address Decode Logic CPU 8051 A CS A+1 WR TLC7528 DB0 WR DB7 ALE Latch 8 Data Bus AD0 −AD7 NOTE A: A = decoded address for TLC7528 DACA A + 1 = decoded address for TLC7528 DACB Figure 5. TLC7528: Intel 8051 Interface 8 Address Bus A8 −A15 DACA/DACB VMA CPU 6800 Address Decode Logic A CS A+1 WR TLC7528 DB0 φ2 DB7 8 AD0 −AD7 Data Bus NOTE A: A = decoded address for TLC7528 DACA A + 1 = decoded address for TLC7528 DACB Figure 6. TLC7528: 6800 Interface POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION 8 Address Bus A8 −A15 DACA/DACB Address Decode Logic IORQ A CS TLC7528 WR A+1 CPU Z80-A DB0 DB7 WR 8 Data Bus D0 −D7 NOTE A: A = decoded address for TLC7528 DACA A + 1 = decoded address for TLC7528 DACB Figure 7. TLC7528 To Z-80A Interface programmable window detector The programmable window comparator shown in Figure 8 determines if the voltage applied to the DAC feedback resistors is within the limits programmed into the data latches of these devices. Input signal range depends on the reference and polarity; that is, the test input range is 0 to −Vref. The DACA and DACB data latches are programmed with the upper and lower test limits. A signal within the programmed limits drives the output high. 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION VCC VDD Test Input 0 to −Vref 3 17 RFBA 1 kΩ OUTA − 4 2 DACA REFA + 8 14 −7 Data Inputs DB0 −DB7 TLC7528 15 16 6 CS 1 WR DACA / DACB OUTB DACB + 5 20 − 18 REFB Vref PASS / FAIL Output AGND DGND RFBB 19 Figure 8. Digitally-Programmable Window Comparator (Upper- and Lower-Limit Tester) digitally-controlled signal attenuator Figure 9 shows a TLC7528 configured as a two-channel programmable attenuator. Applications include stereo audio and telephone signal level control. Table 3 shows input codes vs attenuation for a 0dB to 15.5dB range. Attenuation dB = − 20 log10 D/256, D = digital input code VDD 17 4 VIA REFA RFBA 3 OUTA 2 DACA A1 DB0 −DB7 TLC7528 CS WR 20 VOB DACA / DACB OUTB DACB A2 REFB AGND RFBB DGND 14 −7 Output 8 Data Bus 15 16 6 18 1 5 19 Figure 9. Digitally Controlled Dual Telephone Attenuator POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION Table 3. Attenuation vs DACA, DACB Code ATTEN (dB) DAC INPUT CODE CODE IN DECIMAL ATTN (dB) DAC INPUT CODE CODE IN DECIMAL 0 11111111 255 8.0 01100110 102 0.5 11110010 242 8.5 01100000 96 1.0 11100100 228 9.0 01011011 91 1.5 11010111 215 9.5 01010110 86 2.0 11001011 203 10.0 01010001 81 2.5 11000000 192 10.5 01001100 76 3.0 10110101 181 11.0 01001000 72 3.5 10101011 171 11.5 01000100 68 4.0 10100010 162 12.0 01000000 64 4.5 10011000 152 12.5 00111101 61 5.0 10011111 144 13.0 00111001 57 5.5 10001000 136 13.5 00110110 54 6.0 10000000 128 14.0 00110011 51 6.5 01111001 121 14.5 00110000 48 7.0 01110010 114 15.0 00101110 46 7.5 01101100 108 15.5 00101011 43 programmable state-variable filter This programmable state-variable or universal filter configuration provides low-pass, high-pass, and bandpass outputs, and is suitable for applications requiring microprocessor control of filter parameters. As shown in Figure 10, DACA1 and DACB1 control the gain and Q of the filter while DACA2 and DACB2 control the cutoff frequency. Both halves of the DACA2 and DACB2 must track accurately in order for the cutoff-frequency equation to be true. With the TLC7528, this validity is easy to achieve. fc + 1 2p R1C1 The programmable range for the cutoff or center frequency is 0kHz to 15kHz with a Q ranging from 0.3 to 4.5. This parameter defines the limits of the component values. 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION C3 47 pF 17 Data In REFA DACA (RS) VDD RFBA 8 AGND TLC7528 15 16 5 6 3 30 kΩ R4 A1 1 30 kΩ R3 CS OUTB DACB (RF) WR R5 RFBB DGND 20 A2 10 kΩ + VI OUTA 2 + 4 19 High Pass Out REFB 18 DACA / DACB Bandpass Out DACA1 AND DACB1 C1 1000 pF Data In OUTA 2 DACA (R1) VDD RFBA 8 TLC7528 15 16 5 6 AGND 1 C2 OUTB 20 1000 pF CS DACB (R2) WR A3 3 RFBB DGND 19 A4 Low Pass Out + 17 REFA + 4 REFB 18 DACA / DACB DACA2 and DACB2 Circuit Equations: C1 = C2, R1 = R2, R4 = R5 Q= R R3 R4 R F fb(DACB1) Where: R is the internal resistor connected between OUTB and RFBB fb R − F G RS NOTES: A. Op-amps A1, A2, A3, and A4 are TL287. B. CS compensates for the op-amp gain-bandwidth limitations. 256 (DAC ladder resistance) C. DAC equivalent resistance equals DAC digital code Figure 10. Digitally-Controlled State-Variable Filter POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13                    SLAS062E − JANUARY 1987 − REVISED NOVEMBER 2008 APPLICATION INFORMATION voltage-mode operation It is possible to operate the current multiplying D/A converter of these devices in a voltage mode. In the voltage mode, a fixed voltage is placed on the current output terminal. The analog output voltage is then available at the reference voltage terminal. Figure 11 is an example of a current multiplying D/A that operates in the voltage mode. R R R REF (Analog Output Voltage) 2R 2R 2R “0” 2R “1” R Out (Fixed Input Voltage) AGND Figure 11. Voltage-Mode Operation The following equation shows the relationship between the fixed input voltage and the analog output voltage: VO = VI (D/256) Where: VO = analog output voltage VI = fixed input voltage (must not be forced below 0V.) D = digital input code converted to decimal In voltage-mode operation, these devices meet the following specification: PARAMETER Linearity error at REFA or REFB 14 TEST CONDITIONS VDD = 5V, POST OFFICE BOX 655303 OUTA or OUTB at 2.5V, • DALLAS, TEXAS 75265 MIN TA = +25°C MAX UNIT 1 LSB Revision History DATE REV PAGE SECTION DESCRIPTION 11/08 E 13 Application Information Front Page — Deleted Available Options table. 6/07 D 3 — Inserted Package/Ordering information. Corrected Figure 10. NOTE: Page numbers for previous revisions may differ from page numbers in the current version. PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) TLC7528CDW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CDWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CDWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CFN ACTIVE PLCC FN 20 46 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CFNG3 ACTIVE PLCC FN 20 46 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CFNR ACTIVE PLCC FN 20 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CN ACTIVE PDIP N 20 20 Pb-Free (RoHS) NIPDAU N / A for Pkg Type 0 to 70 TLC7528CN TLC7528CNS ACTIVE SO NS 20 40 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528 TLC7528CNSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528 TLC7528CPW ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528CPWR ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM 0 to 70 TLC7528C TLC7528EDW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -40 to 85 TLC7528E TLC7528EDWG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -40 to 85 TLC7528E TLC7528EDWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -40 to 85 TLC7528E TLC7528EN ACTIVE PDIP N 20 20 Pb-Free (RoHS) NIPDAU N / A for Pkg Type -40 to 85 TLC7528EN TLC7528IDW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -25 to 85 TLC7528I TLC7528IDWG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -25 to 85 TLC7528I Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) TLC7528IDWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -25 to 85 TLC7528I TLC7528IFN ACTIVE PLCC FN 20 46 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -25 to 85 TLC7528I TLC7528IFNG3 ACTIVE PLCC FN 20 46 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -25 to 85 TLC7528I TLC7528IN ACTIVE PDIP N 20 20 Pb-Free (RoHS) NIPDAU N / A for Pkg Type -25 to 85 TLC7528IN TLC7528IPW ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -25 to 85 TLC7528I TLC7528IPWG4 ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -25 to 85 TLC7528I TLC7528IPWR ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -25 to 85 TLC7528I (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
TLC7528CDW 价格&库存

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TLC7528CDW
    •  国内价格 香港价格
    • 1+75.139861+9.02500
    • 10+37.2160910+4.47000
    • 50+32.4787450+3.90100
    • 100+29.31496100+3.52100
    • 500+28.68220500+3.44500
    • 1000+28.524011000+3.42600
    • 2000+28.207632000+3.38800
    • 4000+27.974514000+3.36000

    库存:18

    TLC7528CDW
    •  国内价格
    • 1+50.30760
    • 3+37.33543
    • 8+35.29917

    库存:154