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19-3406; Rev 1; 10/05
200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown
General Description
The single MAX9910/MAX9911 and dual MAX9912/ MAX9913 operational amplifiers (op amps) feature a maximized ratio of gain bandwidth (GBW) to supply current and are ideal for battery-powered applications such as portable instrumentation, portable medical equipment, and wireless handsets. These CMOS op amps feature an ultra-low input-bias current of 1pA, railto-rail inputs and outputs, low supply current of 4µA, and operate from a single 1.8V to 5.5V supply. For additional power conservation, the MAX9911/MAX9913 feature a low-power shutdown mode that reduces supply current to 1nA, and puts the amplifiers’ outputs in a high-impedance state. These devices are unity-gain stable with a 200kHz GBW product. The MAX9910/MAX9911 are available in 5-pin and 6-pin SC70 packages, respectively. The MAX9912 is available in an 8-pin SOT23 package, and the MAX9913 is available in a 10-pin µMAX® package. All devices are specified over the -40°C to +85°C extended operating temperature range. ♦ 200kHz GBW ♦ Ultra-Low 4µA Supply Current ♦ Single 1.8V to 5.5V Supply Voltage Range ♦ Ultra-Low 1pA Input Bias Current ♦ Rail-to-Rail Input and Output Voltage Ranges ♦ Low ±200µV Input Offset Voltage ♦ Low 0.001µA Shutdown Current ♦ High-Impedance Output During Shutdown (MAX9911/MAX9913) ♦ Unity-Gain Stable ♦ Available in Tiny SC70, SOT23, and µMAX Packages
Features
MAX9910–MAX9913
Applications
Portable Medical Devices Portable Test Equipment Laptops Data-Acquisition Equipment
PART MAX9910EXK+T MAX9910EXK-T MAX9911EXT+T MAX9911EXT-T
1.8V TO 5.5V OUTA VDD
Ordering Information
TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 5 SC70-5 5 SC70-5 6 SC70-6 6 SC70-6 8 SOT23-8 8 SOT23-8 10 µMAX 10 µMAX TOP MARK AGA AGA ACA ACA AEJY AEJY — —
Typical Operating Circuit
MAX9912EKA+T MAX9912EKA-T MAX9913EUB
VOUT 25kΩ
INA-
OUTB
MAX9913EUB+
+Denotes lead-free package.
VMID
INA+
INB-
VSS
INB+
VMID + VBIAS ON
MAX9913
ON SHDNA OFF SHDNB OFF
Selector Guide
PART AMPLIFIERS PER PACKAGE 1 1 2 2 SHUTDOWN MODE No Yes No Yes
1MΩ
RE GLUCOSE WE CE SENSOR
MAX9910EXK-T MAX9911EXT-T MAX9912EKA-T MAX9913EUB
THREE ELECTRODE GLUCOSE METER APPLICATION WITH SHUTDOWN
µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
200kHz, 4µA, Rail-to-Rail I/O Op Amps with Shutdown MAX9910–MAX9913
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (VDD to VSS) ......................-0.3V to +6.0V IN_+, IN_-, OUT_, SHDN_ ............... (VSS - 0.3V) to (VDD + 0.3V) Current into IN_+, IN_- ......................................................±20mA Output Short-Circuit Duration to VDD or VSS ..............Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SC70 (derate 3.1mW/°C above +70°C) ............. 247mW 6-Pin SC70 (derate 3.1mW/°C above +70°C) ............. 245mW 8-Pin SOT23 (derate 9.1mW/°C above +70°C)........... 727mW 10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW Operating Temperature Range .......................... -40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ............................... +300°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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = 1.8V to 5.5V, VSS = 0V, VCM = 0V, VOUT = VDD / 2, RL = ∞ connected to VDD / 2, SHDN_ = VDD, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER Supply Voltage Range SYMBOL VDD CONDITIONS Guaranteed by PSRR test MAX9910/MAX9911 Supply Current IDD MAX9912/MAX9913 Shutdown Supply Current Input Offset Voltage Input-Offset-Voltage Matching Input Bias Current Input Offset Current Input Resistance Input Common-Mode Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio IB IOS RIN VCM CMRR PSRR IDD(SHDN_) VOS MAX9912/MAX9913 (Note 2) (Note 2) Common mode Differential mode, -1mV < VIN < +1mV Guaranteed by CMRR test -0.1V < VCM < VDD + 0.1V, VDD = 5.5V 1.8V < VDD < 5.5V 25mV < VOUT < VDD - 25mV, RL = 100kΩ, VDD = 5.5V 100mV < VOUT < VDD - 100mV, RL = 5kΩ, VDD = 5.5V RL = 100kΩ Output-Voltage-Swing High VOH VDD - VOUT RL = 5kΩ RL = 1kΩ RL = 100kΩ Output-Voltage-Swing Low Channel-to-Channel Isolation Output Short-C.