TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 VCC EOC I/O CLK DATA IN DATA OUT CS REF+ REF– FS INV CLK EOC FK PACKAGE (TOP VIEW) VCC 3 2 1 20 19 A3 4 18 I/O CLK A4 5 17 DATA IN A5 6 16 DATA OUT A6 7 15 CS A7 8 14 REF+ 9 10 11 12 13 REF– The TLV1544 and TLV1548 are CMOS 10-bit switched-capacitor successive-approximation (SAR) analog-to-digital
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 description (continued) The TLV1544 has four analog input channels while the TLV1548 has eight analog input channels. The TLV1544C and TLV1548C are characterized for operation from 0°C to 70°C. The TLV1544I and TLV1548I are characterized for operation over the full industrial temperature range of –40°C to 85°C.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 Terminal Functions TERMINAL NO.† NAME NO.‡ I/O DESCRIPTION A0–A3 A4–A7 6–9 – 1–4 5–8 I Analog inputs. The analog inputs are internally multiplexed. (For a source impedance greater than 1 kΩ, the asynchronous start should be used to increase the sampling time.) CS 16 15 I Chip select.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 Terminal Functions (Continued) TERMINAL NO.† NO.‡ NAME I/O CLK 3 I/O DESCRIPTION I Input/output clock.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 I/O CLK The I/O CLK can go up to 10 MHz for most of the voltage range when fast I/O is possible. The maximum I/O CLK is limited to 2.8 MHz for a supply voltage range from 2.7 V. Table 1 lists the maximum I/O CLK frequencies for all different supply voltage ranges. This also depends on input source impedance.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 DSP interface The TLV1544/1548 can also interface with a DSP, from the TMS320 family for example, through a serial port. The analog-to-digital converter (ADC) serves as a slave device where the DSP supplies FS and the serial I/O CLK. Transmit and receive operations are concurrent.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 input data bits DATA IN is internally connected to a 4-bit serial input data register. The input data selects a different mode or selects different analog input channels. The host provides the data word with the MSB first.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 converter The CMOS threshold detector in the successive-approximation conversion system determines the value of each bit by examining the charge on a series of binary-weighted capacitors (see Figure 1).
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 extended sampling, asynchronous start of sampling: CSTART operation The extended sampling mode of operation programs the acquisition time (tACQ) of the sample-and-hold circuit. This allows the analog inputs of the device to be directly interfaced to a wide range of input source impedances.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 Complete Extended Sample Cycle Extended Sample Cycle Normal Cycle Extended Sample Cycle Read Out Cycle Read Out Cycle Read Out Cycle Normal Cycle CS FS (DSP Mode) tACQ tACQ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ CSTART DATA IN Aa Ab Ab Ac Ad EOC D
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 Table 5. Conversion Rate and Power Consumption Selection TYPICAL SUPPLY CURRENT, ICC CONVERSION TIME TIME, tconv AVAILABLE VCC RANGE Fast conversion speed 7 µs typ 5.5 V to 3.3 V 9h 0.6 mA typ 1.5 mA max 1 µA typ Slow conversion speed 15 µs typ 5.5 V to 2.7 V Ah 0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 First Cycle After Powerup MUX Address for Channel 0 CS FS (For DSP Mode) Async Flag (Internal) DATA IN ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 9h 0h Ab Signal Channel 0 Converted EOC DATA OUT Hi–Z Hi–Z X Conversion Rate Set to Fast Hi–Z Hi–Z D0 X Conversion Result From Channel 0 A
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 Threshold Detect REF+ REF– SampleandHold Function A0–A7 11-to-1 Analog MUX TEST 0–2 DATA OUT Output Shift Clock Invert Vref REF– SAR† Latch 10-to-1 Select Conversion Clock REF+ EOC INV CLK If_mode DATA IN If_mode OSC Input Data Register SMCLK Input Shift Clock 2-to-1 Invert 2-to-1 DSP§ If_mode CS FS I/
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 recommended operating conditions MIN Supply voltage, VCC NOM 2.7 Positive reference voltage, Vref + (see Note 2) MAX 5.5 VCC 0 Negative reference voltage, Vref – (see Note 2) Differential reference voltage, Vref + – Vref – (see Note 2) 2.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 electrical characteristics over recommended operating free-air temperature range, VCC = Vref+ = 2.7 V to 5.5 V, I/O CLK frequency = 2.2 MHz (unless otherwise noted) PARAMETER TEST CONDITIONS TYP† MAX VOH High level output voltage High-level VOL Low level output voltage Low-level VCC = 5.5 V, VCC = 2.7 V, IOL = 0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 operating characteristics over recommended operating free-air temperature range, VCC = Vref+ = 2.7 V to 5.5 V, I/O CLK frequency = 2.2 MHz (unless otherwise noted) TEST CONDITIONS PARAMETER MIN TYP† MAX UNIT ±0.5 ±1 LSB ±0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 operating characteristics over recommended operating free-air temperature range, VCC = Vref+ = 2.7 V to 5.5 V, I/O CLK frequency = 2.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 PARAMETER MEASUREMENT INFORMATION Address Valid 90% CS 10% 10% 90% 10% 10% VOH 10% th(A) VIH 10% VOL tt(I/O) tt(CS) VIH 90% 10% 10% VIL th(CS) tsu(CS) td(I/O-CS) I/O CLK First Clock 10% Last Clock 10% VIL Figure 10.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 PARAMETER MEASUREMENT INFORMATION 10th Clock I/O CLK 10% 10% VIL td(I/O-EOC) VOH EOC (µp Mode) 10% VOL td(I/O-EOC) EOC (DSP Mode) VOH 90% 10% VOL tf(EOC) Figure 13.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 PARAMETER MEASUREMENT INFORMATION Address Sampled Conversion Starts on 10th I/O CLK↑ Rise After 10th I/O CLK↓ Conversion Access td(EOC↑-CS↓) Sample (6 I/O CLKs) CS (see Note A) 1 2 3 4 A3 A2 A1 A0 D8 D7 D6 5 6 7 8 9 10 I/O CLK ÎÎÎ ÎÎÎ DI MSB Hi-Z DO D9 ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ A3
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 PARAMETER MEASUREMENT INFORMATION Initialize Counter Address Sampled Conversion Starts on 10th I/O CLK↓ CS Rise After 16th I/O CLK↓ td(EOC↑-CS↓) Initialize State Machine 7 I/O CLKs Maximum Access Sample (6 I/O CLKs) CS (see Note A) 1 2 3 4 5 A3 A2 A1 A0 D8 D7 D6 6 7 Hold/Conversion 8 9 10 11 12 1
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 PARAMETER MEASUREMENT INFORMATION Initialize Counter Address Sampled Conversion Starts on 10th I/O CLK↓ CS Rise After 16th I/O CLK↓ td(EOC↑-CS↓) Initialize State Machine 7 I/O CLKs Maximum Access Sample (6 I/O CLKs) CS (see Note A) 1 2 3 4 A3 A2 A1 A0 D8 D7 D6 5 6 7 8 Hold/Conversion 9 10 11 12 1
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 TYPICAL CHARACTERISTICS INTEGRAL NONLINEARITY ERROR vs FREE-AIR TEMPERATURE 0.4 0.5 0.3 0.4 INL – Integral Nonlinearity Error – LSB INL – Integral Nonlinearity Error – LSB INTEGRAL NONLINEARITY ERROR vs FREE-AIR TEMPERATURE Maximum 0.2 0.1 VCC = 2.7 V 0 –0.1 –0.2 Minimum –0.3 –0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 TYPICAL CHARACTERISTICS OFFSET ERROR vs FREE-AIR TEMPERATURE GAIN ERROR vs FREE-AIR TEMPERATURE 0.35 0.7 VCC = 2.7 V 0.3 EG – Gain Error – LSB 0.6 EO – Offset Error – LSB 0.25 VCC = 5.5 V 0.2 0.15 0.1 0.5 0.4 VCC = 2.7 V 0.3 0.2 VCC = 5.5 V 0.05 0 –75 0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs FREE-AIR TEMPERATURE 0.56 I CC – Supply Current – mA 0.54 0.52 0.5 0.48 0.46 0.44 0.42 VCC = 5.5 V Clock Mode = Fast Conversion 0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 TYPICAL CHARACTERISTICS INTEGRAL NONLINEARITY ERROR vs DIGITAL OUTPUT CODE DIFFERENTIAL NONLINEARITY ERROR vs DIGITAL OUTPUT CODE 1 1 INL – Integral Nonlinearity Error – LSB 0.8 0.6 DNL – Differential Nonlinearity Error – LSB VCC = 5 V TA = –40°C Clock Mode = Fast 0.4 0.2 0 –0.2 –0.4 –0.6 –0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 TYPICAL CHARACTERISTICS INTEGRAL NONLINEARITY ERROR vs DIGITAL OUTPUT CODE 1 VCC = 5 V TA = 85°C Clock Mode = Fast INL – Integral Nonlinearity Error – LSB 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 APPLICATION INFORMATION 1023 1111111111 VFS See Notes A and B 1022 1111111110 VFSnom 1021 VFT = VFS – 1/2 LSB 513 1000000001 512 1000000000 VZT = VZS + 1/2 LSB Step Digital Output Code 1111111101 511 0111111111 VZS 0000000001 1 0000000000 0 0.0048 0.0096 2.4528 2.4576 2.4624 4.9128 4.9080 2 0.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 APPLICATION INFORMATION VCC 20 12 11 VCC FS TLV1548† Microprocessor 15 CS INV CLK I/O CLK DX DR 14 REF+ 3 V dc Regulated 13 REF– GND CLKR 16 DATA OUT A0–A7 Analog Inputs CLKX 17 DATA IN 1–8 I/O 2 18 10 To Source Ground † DB package is shown for TLV1548 Figure 38.
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 APPLICATIONS INFORMATION simplified analog input analysis Using the equivalent circuit in Figure 33, the time required to charge the analog input capacitance from 0 to VS within 1/2 LSB can be derived as follows: ǒ Ǔ The capacitance charging voltage is given by: V C + VS 1–e–tcńRtCi where (1) Rt = Rs + ri tc = Cycl
TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999 APPLICATIONS INFORMATION Driving Source† TLV1544/48 Rs VS ri VI VC 1 kΩ Ci 55 pF MAX VI = Input Voltage at AIN VS = External Driving Source Voltage Rs = Source Resistance ri = Input Resistance (MUX on Resistance) Ci = Input Capacitance VC = Capacitance Charging Voltage † Driving source requirements: • Noise and dist
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.3 2.1 8.0 16.0 Q1 TLV1544CDR SOIC D 16 2500 330.0 16.4 6.5 TLV1544CPWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 TLV1544IDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TLV1544CDR SOIC D 16 2500 367.0 367.0 38.0 TLV1544CPWR TSSOP PW 16 2000 367.0 367.0 35.0 TLV1544IDR SOIC D 16 2500 367.0 367.0 38.0 TLV1544IPWR TSSOP PW 16 2000 367.0 367.0 35.0 TLV1548CDBR SSOP DB 20 2000 367.0 367.0 38.0 TLV1548IDBR SSOP DB 20 2000 367.0 367.0 38.
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