9-3142; Rev 5; 11/09 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference Features The single MAX4036/MAX4037 and dual MAX4038/ MAX4039 operational amplifiers operate from a single +1.4V to +3.6V (without reference) or +1.8V to +3.6V (with reference) supply and consume only 800nA of supply current per amplifier, and 1.1µA for the optional reference. The MAX4036/MAX4038 feature a common-mode input voltage range from 0V to VDD - 0.4V at VDD = 1.4V. The MAX4037/MAX4039 feature a 1.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference ABSOLUTE MAXIMUM RATINGS VDD to VSS .............................................................-0.3V to +4.0V INA+, INB+, INA-, INB-, IN+, IN-, OUTA, OUTB, OUT, REF .........................(VSS - 0.3V) to (VDD + 0.3V) OUTA, OUTB, OUT, REF Shorted to VSS or VDD .......Continuous Maximum Continuous Power Dissipation (TA = +70°C) 5-Pin SC70 (derate 3.1mW/°C above +70°C) ..............247mW 6-Pin SOT23 (derate 8.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference (VDD = +3V, VSS = VCM = 0V, VOUT_ = VDD/2, RL to VDD/2, CL = 15pF, TA = +25°C, unless otherwise specified.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference ELECTRICAL CHARACTERISTICS (continued) (VDD = +3V, VSS = VCM = 0V, VOUT_ = VDD/2, RL to VDD/2, CL = 15pF, TA = TMIN to TMAX, unless otherwise specified.) (Note 2) PARAMETER SYMBOL CONDITIONS MAX4038 Supply Current IDD MAX4038A MAX4039 MIN TYP MAX VDD = 1.4V 2.9 VDD = 3.6V 3.2 VDD = 1.4V 3.4 VDD = 3.6V 3.7 VDD = 1.8V 5.2 VDD = 3.6V 5.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference MAX4037 SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE TA = +25°C 0.8 TA = -40°C 0.4 TA = +25°C 2.5 2.0 1.5 TA = -40°C 1.0 3.0 0.5 1.4 1.8 2.2 2.6 3.0 1.5 1.0 TA = -40°C 2.1 2.4 2.7 3.0 3.3 0 3.6 1.4 1.8 2.2 2.6 3.0 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) MAX4039 SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE OFFSET VOLTAGE vs. COMMON-MODE VOLTAGE OFFSET VOLTAGE vs. TEMPERATURE 2 TA = -40°C 0.
Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) 30 25 VOL - VSS (mV) RL = 5kΩ 100 20 15 10 RL = 5kΩ 120 AV (dB) 15 140 MAX4036 toc11 RL = 5kΩ 20 RL = 100kΩ 80 10 60 5 5 RL = 100kΩ 0 RL = 100kΩ 0 -15 10 35 60 85 40 -40 -15 10 35 60 85 0 100 200 300 400 TEMPERATURE (°C) TEMPERATURE (°C) VOL (mV) AV vs. OUTPUT SWING HIGH AV vs. TEMPERATURE CROSSTALK vs.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference INPUT VOLTAGE NOISE DENSITY vs. FREQUENCY OP AMP SOURCE CURRENT vs. OUTPUT VOLTAGE SOURCE CURRENT (mA) 14 VDD = 3.0V 12 10 8 6 VDD = 1.8V 4 MAX4036 toc20 INPUT VOLTAGE NOISE (nV/√Hz) VID = +100mV 16 3500 MAX4036 toc19 18 3000 2500 2000 1500 1000 500 2 0 0 0 0.6 1.2 1.8 2.4 3.0 0.
Typical Operating Characteristics (continued) (VDD = 3V, VSS = VCM = 0V, RL to VDD/2, TA = +25°C, unless otherwise noted.) GAIN AND PHASE vs. FREQUENCY GAIN 180 2 135 -2 -6 PHASE 0 -45 -20 -30 -40 1 10 100 1k RL = 5kΩ RL = 100kΩ -22 AV = 1 VOUT_ = 1VP-P CL = 12pF -26 -135 100k 10k RL = 1MΩ -14 -18 -90 AV = 1000V/V VIN_ = 1mVP-P -10 -30 100 REFERENCE VOLTAGE CHANGE vs. TIME REFERENCE VOLTAGE CHANGE vs. LOAD CURRENT 1.02 MAX4036 toc28 1.234 1.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference REFERENCE LOAD-TRANSIENT RESPONSE (SINKING CURRENT) REFERENCE LOAD-TRANSIENT RESPONSE (SINKING CURRENT) MAX4036 toc33 MAX4036 toc32 0 IREF 0 IREF 2μA 20μA VREF 500mV/div VREF 500mV/div 0 0 2.5ms/div 2.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference Power-Supply Considerations The MAX4036–MAX4039 operate from a single 1.4V (MAX4036/MAX4038) or 1.8V (MAX4037/MAX4039) to 3.6V supply. A high amplifier power-supply rejection ratio of 82dB and the excellent reference line regulation allow the devices to be powered directly from a decaying battery voltage, simplifying design and extending battery life. The MAX4036–MAX4039 are ideally suited for low-voltage battery-powered systems.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference 3) Calculate R1: VHB VDD 0.5V = 10MΩ × 2.4 V = 210kΩ R3 R1 = R 3 × 4) 5) VBATT IN+ Choose the threshold voltage for VIN rising (VTHR). In this example, choose VTHR = 2.0V. Calculate R2: OUT R2 ⎡⎛ VTHR ⎞ 1 1 ⎤ − − ⎢⎜ ⎥ ⎟ R1 R 3 ⎥⎦ ⎢⎣⎝ VREF × R1⎠ 1 = ⎡⎛ 2.0V 1 1 ⎤ ⎞ − ⎟ − ⎢⎜ ⎥ 210kΩ 10MΩ ⎦ ⎣⎝ 1.2V × 210kΩ ⎠ = 325kΩ VSS REF VREF Figure 4.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference TOP VIEW 5 VDD IN+ 1 VSS 2 OUT 1 MAX4036 MAX4036A 6 VDD MAX4037 VSS 2 4 OUT IN- 3 4 IN- IN+ 3 SC70 SOT23 8 VDD OUTA 1 INA- 2 MAX4038 MAX4038A INA+ 3 5 REF VSS 4 OUTA 1 7 OUTB INA- 2 6 INB- INA+ 3 5 INB+ VSS 4 μMAX 8 VDD 7 OUTB MAX4038 6 INB5 INB+ 3mm x 3mm x 0.8mm TDFN TDFN EXPOSED PAD CONNECTED TO VSS. OUTA 1 10 VDD OUTA 1 10 VDD 9 OUTB INA- 2 8 INB- INA+ 3 4 7 INB+ N.C.
Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. SC70, 5L.EPS MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference 6LSOT.EPS PACKAGE OUTLINE, SOT 6L BODY 21-0058 I 1 2 ______________________________________________________________________________________ 15 MAX4036–MAX4039 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference α α ______________________________________________________________________________________ 17 MAX4036–MAX4039 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference COMMON DIMENSIONS PACKAGE VARIATIONS MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b A 0.70 0.80 T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF D 2.90 3.10 T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF E 2.90 3.10 T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF 0.05 T1033-1 10 1.50±0.10 2.30±0.10 0.
Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. 10LUMAX.EPS MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference 9LUCSP, 3x3.EPS PACKAGE OUTLINE, 3x3 UCSP 21-0093 L 1 1 ______________________________________________________________________________________ 21 MAX4036–MAX4039 Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only.
MAX4036–MAX4039 Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference Revision History REVISION NUMBER REVISION DATE 5 11/09 DESCRIPTION Updated TOC 20 PAGES CHANGED 7 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
