(LTC1588 - LTC1592) 12-/14-/16-Bit SoftSpan DACs

www.DataSheet4U.com LTC1588/LTC1589/LTC1592 12-/14-/16-Bit SoftSpan DACs with Programmable Output Range FEATURES s DESCRIPTIO s s s s s Six Programmable Output Ranges Unipolar Mode: 0V to 5V, 0V to 10V Bipolar Mode: ±5V, ±10V, ±2.5V, – 2.5V to 7.5V 1LSB Max DNL and INL Over the Industrial Temperature Range Glitch Impulse < 2nV-s 16-Lead SSOP Package Power-On Reset to 0V Asynchronous Clear to 0V for All Ranges The LTC®1588/LTC1589/LTC1592 are serial input 12-/14/16-bit multiplying current output DACs that operates from a single 5V supply. These SoftSpanTM DACs can be software-programmed for either unipolar or bipolar mode through a 3-wire SPI interface. In either mode, the voltage output range can also be software-programmed. Two output ranges in unipolar mode and four output ranges in bipolar mode are available. INL and DNL are accurate to 1LSB over the industrial temperature range in both unipolar and bipolar modes. True 16-bit 4-quadrant multiplication is achieved with on-chip four quadrant multiplication resistors. The LTC1588/LTC1589/LTC1592 are available in a 16-lead SSOP package. These devices include an internal deglitcher circuit that reduces the glitch impulse to less than 2nV-s (typ). The asynchronous clear pin resets the LTC1588/LTC1589/ LTC1592 to 0V in unipolar or bipolar mode. , LTC and LT are registered trademarks of Linear Technology Corporation. SoftSpan is a trademark of Linear Technology Corporation. APPLICATIO S s s s s s Process Control and Industrial Automation Precision Instrumentation Direct Digital Waveform Generation Software-Controlled Gain Adjustment Automatic Test Equipment TYPICAL APPLICATIO VREF 5V 5 Programmable Output Range 16-Bit SoftSpan DAC LTC1592 Integral Nonlinearity 7 INTEGRAL NONLINEARITY (LSB) + 1/2 LT®1469 6 – C2 150pF 2 R1 R1 5V 9 0.1µF 14 13 12 11 10 CLR CS/LD SCK SDI SDO VCC 1 RCOM R2 16 15 3 4 C1 15pF 15V 8 0.1µF R2 REF ROFS RFB 16-BIT DAC WITH SPAN ADJUST IOUT2 6 AGND LTC1592 GND 7 8 3 1588992 TA01 + – IOUT1 5 2 1/2 LT1469 4 –15V 1 VOUT 0.1µF U 1.0 VREF = 5V 0.8 ALL OUTPUT RANGES 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 49152 32768 16384 DIGITAL INPUT CODE 65535 1588992 TA02 U U 1588992fa 1 www.DataSheet4U.com LTC1588/LTC1589/LTC1592 ABSOLUTE (Note 1) AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW RCOM R1 ROFS RFB IOUT1 IOUT2 AGND GND 1 2 3 4 5 6 7 8 G PACKAGE 16-LEAD PLASTIC SSOP TJMAX = 150°C, θJA = 125°C/ W 16 R2 15 REF 14 CLR 13 CS/LD 12 SCK 11 SDI 10 SDO 9 VCC VCC to AGND, GND ......................................– 0.3V to 7V AGND to GND .............................. – 0.3V to (VCC + 0.3V) GND to AGND .............................. – 0.3V to (VCC + 0.3V) RCOM to AGND, GND ................................ – 0.3V to 12V REF to AGND, GND ................................................ ±15V ROFS, RFB, R1, R2 to AGND, GND .......................... ±15V Digital Inputs to AGND, GND ....... – 0.3V to (VCC + 0.3V) IOUT1, IOUT2 to AGND, GND .......... – 0.3V to (VCC + 0.3V) Maximum Junction Temperature .......................... 150°C Operating Temperature Range LTC1588C/LTC1589C/LTC1592C ........... 0°C to 70°C LTC1588I/LTC1589I/LTC1592I ........... – 40°C to 85°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C ORDER PART NUMBER LTC1588CG LTC1588IG LTC1589CG LTC1589IG LTC1592ACG LTC1592AIG LTC1592BCG LTC1592BIG Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = TMIN to TMAX, VCC = 5V, VREF = 5V, IOUT2 = AGND = GND = 0V. SYMBOL PARAMETER Accuracy Resolution INL DNL GE BZE Integral Nonlinearity Differential Nonlinearity Gain Error (Notes 2, 3) Guaranteed Monotonic (Note 3) All Output Ranges (Note 3) TA = 25°C TMIN to TMAX TMIN to TMAX TA = 25°C TMIN to TMAX TA = 25°C TMIN to TMAX q q q CONDITIONS TEMPERATURE LTC1588 LTC1589 LTC1592B LTC1592A MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX 12 ±1 ±1 ±1 –0.20 ±3 –0.22 ±3 ±1 ±1 3 ±5 ±15 ±0.01±0.15 14 ±1 ±1 ±1 –1.0 ±4 –1.3 ±6 ±2.5 ±4.0 3 ±5 ±15 ±0.05 ±0.5 16 ±2 ±2 ±1 –3 ±16 –4 ±24 ±10 ±16 3 ±5 ±15 ±2 1 16 ±0.3 ±1 ±0.4 ±1 ±0.2 ±1 –2 ±16 –3 ±16 ±5 ±8 3 ±5 ±15 ±0.2 ±2 UNITS Bits LSB LSB LSB LSB LSB LSB LSB ppm/°C nA nA LSB/V q q q Bipolar Zero Error All Bipolar Ranges (Note 3) Gain Temperature ∆Gain/∆Temperature Coefficient (Note 4) ILKG PSRR IOUT1 Leakage Current Power Supply Rejection (Note 5) VCC = 5V ±10% TA = 25°C TMIN to TMAX q q 1588992fa 2 U W U U W W W www.DataSheet4U.com LTC1588/LTC1589/LTC1592 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER Reference Input RREF R1, R2 ROFS RFB DAC Input Resistance (Unipolar) R1, R2 Resistance Offset Resistance (Bipolar) Feedback Resistance (Unipolar) Feedback Resistance (Bipolar) (Note 6) The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = TMIN to TMAX, VCC = 5V, VREF = 5V, IOUT2 = AGND = GND = 0V. CONDITIONS q q q q q q q q q MIN 5 10 10 20 5 10 10 20 5 TYP 7 14 14 28 7 14 14 28 7 160 100 2 2 1 – 108 11 MAX 10 20 20 40 10 20 20 40 10 UNITS kΩ kΩ kΩ kΩ kΩ kΩ kΩ kΩ kΩ pF pF µs nV-s mVP-P dB nV/√Hz V (Notes 6, 11) ±5V, ±10V, ±2.5V Ranges –2.5V to 7.5V Range 5V Range 10V Range ±5V and –2.5V to 7.5V Ranges ±10V Range ±2.5V Range DAC Load All 1s DAC Load All 0s 5V Range, 0V to 5V Step with LT1468 (Note 7) (Note 10) VREF = ±10V, 10kHz Sine Wave (Note 8) Multiplying (Note 9) At IOUT1 Analog Outputs (Note 4) COUT Output Capacitance (IOUT1) AC Performance (Note 4) Settling Time Midscale Glitch Impulse Multiplying Feedthrough Error THD Total Harmonic Distortion Output Noise Voltage Density Digital Inputs VIH VIL IIN CIN VOH VOL t1 t2 t3 t4 t5 t6 t7 t8 t9 t 10 t 11 Digital Input High Voltage Digital Input Low Voltage Digital Input Current Digital Input Capacitance Digital Output High Voltage Digital Output Low Voltage Serial Input Valid to SCK Setup Time Serial Input Valid to SCK Hold Time SCK Pulse Width High SCK Pulse Width Low CS/LD Pulse High Width LSB SCK High to CS/LD High CS/LD Low to SCK High SCK to SDO Propagation Delay SCK Low to CS/LD Low Clear Pulse Low Width CS/LD High to SCK Positive Edge SCK Frequency Non-Daisy Chain (Note 12) Daisy Chain (Note 13) CLOAD = 50pF VIN = 0V (Note 4) IOH = 200µA IOL = 1.6mA q q q q 2.4 0.8 ±1 8 4 0.4 60 0 35 35 360 35 0 20 35 100 35 14.2 4.1 180 V µA pF V V ns ns ns ns ns ns ns ns ns ns ns MHz MHz Digital Outputs q q Timing Characteristics q q q q q q q q q q q q 1588992fa 3 www.DataSheet4U.com LTC1588/LTC1589/LTC1592 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER Power Supply VCC ICC Supply Voltage Supply Current, VCC CONDITIONS The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = TMIN to TMAX, VCC = 5V, VREF = 5V, IOUT2 = AGND = GND = 0V. MIN q TYP 5 MAX 5.5 10 UNITS V µA 4.5 Digital Inputs = 0V or VCC q Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: ±1LSB = ±0.0015% of full scale = ±15.3ppm of full scale (LTC1592). ±1LSB = ±0.006% of full scale = ±61.2ppm of full scale (LTC1589). ±1LSB = 0.024% of full scale = ±244.8ppm of full scale (LTC1588). Note 3: Using internal feedback resistor. Note 4: Guaranteed by design, not subject to test. Note 5: IOUT1 with DAC register loaded to all 0s. Note 6: Typical temperature coefficient is 100ppm/°C. Note 7: To 0.0015% for a full-scale change, measured from the falling edge of LD for the LTC1592 only. Note 8: REF = 6VRMS at 1kHz. DAC register loaded with all 1s. Output amplifier = LT1468. Note 9: Calculation from en = √4kTRB where: k = Boltzmann constant (1.38E-23 J/°K); R = resistance (Ω); T = temperature (°K); B = bandwidth (Hz). Note 10: Midscale transition code: 32767 to 32768 for the LTC1592, 8191 to 8192 for the LTC1589, 2047 to 2048 for the LTC1588. Note 11: R1 and R2 are measured between R1 and RCOM, R2 and RCOM. Note 12: If a continuous clock is used with data changing on the rising edge of SCK, setup and hold time (t1, t2) will limit the maximum clock frequency. If data changes on the falling edge of SCK then the setup time will limit the maximum clock frequency to 8MHz (continuous 50% duty cycle clock). Note 13: SDO propagation delay and SDI setup time (t8, t1) limit the maximum clock frequency for daisy chaining. TYPICAL PERFOR A CE CHARACTERISTICS (LTC1588/LTC1589/LTC1592) Midscale Glitch Impulse 40 30 USING AN LT1468 CFEEDBACK = 30pF VREF = 10V SUPPLY CURRENT (mA) OUTPUT VOLTAGE (mV) LOGIC THRESHOLD (V) 20 10 0 –10 –20 – 30 – 40 1nV-s TYPICAL 0 0.2 0.4 0.6 TIME (µs) 4 U W 0.8 1588992 G03 Supply Current vs Input Voltage 5 Logic Threshold vs Supply Voltage 3.0 4 VCC = 5V ALL DIGITAL INPUTS TIED TOGETHER 2.5 2.0 1.5 1.0 0.5 0 3 2 1 0 1.0 0 1 3 2 INPUT VOLTAGE (V) 4 5 1588992 G09 0 1 5 2 3 4 SUPPLY VOLTAGE (V) 6 7 1588992 G10 1588992fa www.DataSheet4U.com LTC1588/LTC1589/LTC1592 TYPICAL PERFOR A CE CHARACTERISTICS (LTC1588) Integral Nonlinearity 1.0 1.0 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 800 2400 3200 1600 DIGITAL INPUT CODE 4095 DIFFERENTIAL NONLINEARITY (LSB) 0.8 INTEGRAL NONLINEARITY (LSB) (LTC1589) Integral Nonlinearity 1.0 1.0 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 8224 12336 4112 DIGITAL INPUT CODE 16383 1588992 G13 DIFFERENTIAL NONLINEARITY (LSB) 0.8 INTEGRAL NONLINEARITY (LSB) (LTC1592) Integral Nonlinearity (INL) 1.0 DIFFERENTIAL NONLINEARITY (LSB) 0.8 INTEGRAL NONLINEARITY (LSB) 0.6 0.4 0.2 0 – 0.2 – 0.4 – 0.6 – 0.8 –1.0 0 49152 32768 16384 DIGITAL INPUT CODE 65535 1588992 G01 0.6 0.4 0.2 0 – 0