R OPA OPA OPA OPA OPA OPA OPA OPA OPA µ µ ± ± µ OPA ±± ±± ± µ Offset Trim Offset Trim In OPA +In -Pin DIP, SO- Output NC OPA Out A In A +In A A D Out D In D +In D Out A In A +In A A B Out B In B +In B In B B C 9 +In C In C +In B Out B Out C -Pin DIP, SO- -Pin DIP, SO- November,99
± ± Ω V OS OPAP U( ) ± ± µv OPAP U( ) ± ± µv PA UA ± ± µv OPAP U( ) = + ± µv OPAP U( ) = + ± µv PA UA = + ± µv dv OS /dt OPAP U( ) = + ±. ±. µv/ OPAP U( ) = + ±. ±. µv/ PA UA = + ±. ± µv/. µv/mo PSRR V S = ±V ±V ±. ±. ± µv/v = + V S = ±V ±V ±. ± µv/v dc. µv/v I B ±. ± ±. na = + ± ± na I OS ±. ± ±. na = + ± ± na f =. Hz. µvp-p. µvrms f = Hz e n nv/ Hz f = Hz nv/ Hz f = khz nv/ Hz f = khz nv/ Hz f = khz i n. pa/ Hz V CM () + () V CMRR V CM = () +V () V db = + V CM = () +V () V db MΩ pf V CM = () +V () V GΩ pf A OL V O = () +.V ().V R L = kω db V O = () +.V ().V R L = kω db = + V O = () +.V ().V R L = kω db GBW MHz SR. V/µs.% V S = ±V G = V µs.% V S = ±V G = V µs V IN G = V S µs + THD + N khz G = V O =.Vrms. % R L = kω () +. (). V = + R L = kω () +. (). V R L = kω () +. (). V = + R L = kω () +. (). V I SC ± ma C LOAD V S ± ± V ± ± V I Q I O = ±9 ± µa = + I O = ±9 µa
± ± Ω θ JA SOP /W DIP /W DIP /W SOP /W ± µ µ ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±
± Ω A OL (db) G φ OPEN-LOOP GAIN/PHASE vs FREQUENCY C L = C L = pf 9 Phase ( ) PSR, CMR (db) POWER SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY +PSR PSR CMR. k k k M M. k k k M INPUT NOISE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY Voltage Noise (nv/ Hz) Current Noise (fa/ Hz) Current Noise Voltage Noise. k k CHANNEL SEPARATION vs FREQUENCY TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY V OUT =.Vrms Channel Separation (db) Dual and quad devices. G =, all channels. Quad measured channel A to D or B to C other combinations yield similar or improved rejection. THD+Noise (%).. G =, R L = kω, kω G =, R L = kω, kω k k k M. k k k
± Ω Percent of Amplifiers (%) OFFSET VOLTAGE PRODUCTION DISTRIBUTION Typical distribution of packaged units. Single, dual, and quad included. Percent of Amplifiers (%) OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION Typical distribution of packaged units. Single, dual, and quad included. Offset Voltage (µv).........9. Offset Voltage (µv/ C) WARM-UP OFFSET VOLTAGE DRIFT A OL, CMR, PSR vs TEMPERATURE Offset Voltage Change (µv) A OL, CMR, PSR (db) CMR A OL PSR 9 Time from Power Supply Turn-On (s) Temperature ( C) INPUT BIAS CURRENT vs TEMPERATURE 9 QUIESCENT CURRENND SHORT-CIRCUIT CURRENT vs TEMPERATURE 9 Input Bias Current (na) Curves represent typical production units. Temperature ( C) Quiescent Current (µa) 9 ±I Q I SC +I SC Temperature ( C) Short-Circuit Current (ma)
± Ω I B (na)....... CHANGE IN INPUT BIAS CURRENT vs POWER SUPPLY VOLTAGE Curve ± shows normalized change in bias current with respect to V S = ±V (+V). Typical ± I B may range from.na to +.na at V S = ±V. V CM = V I B (na)....... CHANGE IN INPUT BIAS CURRENT vs COMMON-MODE VOLTAGE Curve shows normalized change in bias current with respect to V CM = V. Typical I B may range from.na to +.na at V CM = V. V S = ±V V S = ±V.... Supply Voltage (V) Common-Mode Voltage (V) Quiescent Current (µa) 9 QUIESCENT CURRENT vs SUPPLY VOLTAGE per amplifier Settling Time (µs) SETTLING TIME vs CLOSED-LOOP GAIN V step C L = pf.%.% ± ± ± ± Supply Voltage (V) ± ± ± Gain (V/V) Output Voltage (Vp-p) MAXIMUM OUTPUT VOLTAGE vs FREQUENCY V S = ±V V S = ±V k k k M Output Voltage Swing (V) () () () () () () () + () + () + () + () + () OUTPUT VOLTAGE SWING vs OUTPUT CURRENT C C C C C C ± ± ± ± ± ± Output Current (ma)
± Ω SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE Gain = ± Overshoot (%) Gain = + Gain = ± k k k Load Capacitance (pf) µ ± ± µ µ
µ ±± ±± ± ± ± ± Trim Range: Exceeds Offset Voltage Specification.µF kω OPA OPA single op amp only..µf Use offset adjust pins only to null offset voltage of op amp see text. Ω ± R R R R Op Amp OPA R B = R R (a) Conventional op amp with external bias current cancellation resistor. No bias current cancellation resistor (see text) (b) OPA with no external bias current cancellation resistor.
/ OPA R V OUT = (V V )( + ) R R V R R R+ R Load Cell R+ R V R R / OPA R R R For integrated solution see: INA, INA (dual) INA (on-board reference) INA (single-supply) I REG ma V Type J / OPA V LIN + V IN I R I R V REG R F kω R G R Ω R F kω R G Ω R G XTR B E 9 Ω kω / OPA V IN I RET I O + I O = ma + (V IN V IN ) R G Ω R CM = Ω.µF R (G = + F = ) R 9