Datasheet LT1997-2 (Analog Devices) - 6

link to page 13 link to page 13 LT1997-2
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, –40°C < TA < 85°C for I-grade parts, –40°C < TA < 125°C for H-grade parts, otherwise specifications are at TA = 25°C. Difference Amplifier Configuration, V+ = 5V, V– = 0V, VCM = VOUT = VREF = VREF1 = VREF2 = Mid-Supply. VCMOP is the common mode voltage of the internal op amp. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Noise Voltage f = 0.1Hz to 10Hz G = 0.1 0.9 µVP-P G = 0.2 0.95 µVP-P G = 0.25 1 µVP-P VOL Output Voltage Swing Low (Referred to V–) No Load l 15 50 mV ISINK = 5mA l 280 500 mV VOH Output Voltage Swing High (Referred to V+) No Load l 15 50 mV ISOURCE = 5mA l 450 800 mV ISC Short-Circuit Output Current 50Ω to V+ l 10 30 mA 50Ω to V– l 10 28 mA SR Slew Rate ∆VOUT = 3V l 0.45 0.75 V/µs BW Small signal –3dB Bandwidth G = 0.1 1 MHz G = 0.2 1.2 MHz G = 0.25 1.1 MHz tS Settling Time G = 0.1 0.1%, ∆VOUT = 2V 7.5 µs 0.01%, ∆VOUT = 2V 11.7 µs G = 0.2 0.1%, ∆VOUT = 2V 8.8 µs 0.01%, ∆VOUT = 2V 13.1 µs G = 0.25 0.1%, ∆VOUT = 2V 8.7 µs 0.01%, ∆VOUT = 2V 12.7 µs VS Supply Voltage 3 50 V l 3.3 50 V tON Turn-On Time 22 µs VIL SHDN Input Logic Low (Referred to V+) l –2.5 V VIH SHDN Input Logic High (Referred to V+) l –1.2 V ISHDN SHDN Pin Current l –10 –15 µA IS Supply Current Active, VSHDN ≥ V+ – 1.2V 330 370 µA Active, VSHDN ≥ V+ –1.2V l 525 µA Shutdown, VSHDN ≤ V+ – 2.5V 15 20 µA Shutdown, VSHDN ≤ V+ – 2.5V l 40 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
This parameter is not 100% tested. may cause permanent damage to the device. Exposure to any Absolute
Note 7:
The input voltage range is guaranteed by the ±25V CMRR tests. Maximum Rating condition for extended periods may affect device The Input Voltage Range numbers specified in the table guarantee that the reliability and lifetime. internal op amp operates in its normal operating region. The Input voltage
Note 2:
See Common Mode Voltage Range in the Applications Information range can be higher if the internal op amp operates in its Over-The-Top® section of this data sheet for other considerations when taking +INA/ operating region. See Common Mode Voltage Range in the Applications –INA/+INB/–INB/+INC/–INC pins to ±270V. Information section to determine the valid input voltage range under
Note 3:
A heat sink may be required to keep the junction temperature various operating conditions. below absolute maximum. This depends on the power supply, input
Note 8:
Input impedance is tested by a combination of direct voltages and the output current. measurements and correlation to the CMRR and gain error tests.
Note 4:
The LT1997I-2 is guaranteed functional over the operating
Note 9:
Offset voltage, offset voltage drift and PSRR are defined as temperature range of –40°C to 85°C. The LT1997H-2 is guaranteed referred to the internal op amp. The following shows the calculation of functional over the operating temperature range of –40°C to 125°C. output offset: In the case of balanced source resistance, VOS,OUT = (VOS
Note 5:
The LT1997I-2 is guaranteed to meet specified performance • NOISEGAIN) + (IOS • 25k) + (IB • 25k • (1– RP/RN)) where RP and RN from –40°C to 85°C. The LT1997H-2 is guaranteed to meet specified are the total resistance at the op amp positive and negative terminal, performance from –40°C to 125°C. respectively. Rev 0 6 For more information www.analog.com Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS