Datasheet LTC1541, LTC1542 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | Micropower Op Amp, Comparator and Reference |
| Pages / Page | 12 / 8 — TYPICAL PERFOR A CE CHARACTERISTICS. Op Amp Open-Loop Gain and Phase vs … |
| File Format / Size | PDF / 267 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Op Amp Open-Loop Gain and Phase vs Frequency. PI FU CTIO S. AMPOUT (Pin 1):
Model Line for this Datasheet
Text Version of Document
LTC1541/LTC1542
W U TYPICAL PERFOR A CE CHARACTERISTICS Op Amp Open-Loop Gain and Phase vs Frequency
120 0 100 –45 PHASE SHIFT (DEGREES) 80 –90 PHASE 60 –135 40 –180 GAIN 20 –225 OPEN-LOOP GAIN (dB) 0 –270 VCC = 5V V –20 SS = GND –315 RLOAD = 100kΩ –40 –360 10 100 1k 10k 100k 1M FREQUENCY (Hz) 1541/42 TPC13
U U U PI FU CTIO S AMPOUT (Pin 1):
Op Amp Output. The output can swing
REF (Pin 6) (LTC1541):
Reference Output. VREF = 1.2V from rail-to-rail while driving a capacitive load of up to ±1% over industrial temperature range, and is also con- 1000pF. The output can source and sink 0.7mA (min). nected to inverting comparator input internally. This de-
AMPIN– (Pin 2):
Inverting Input of Op Amp. The input vice can source up to 2mA and sink up to 20µA. The output common mode ranges from V can drive a bypass capacitor of up to 0.01µF without SS to (VCC – 1.3V). The input current is typically 10pA at 25°C. oscillation.
AMPIN+ (Pin 3):
Noninverting Input of Op Amp. The input
COMPIN– (Pin 6) (LTC1542):
Inverting Input of Compara- common mode ranges from V tor. The input common mode ranges from VSS to SS to (VCC – 1.3V). The input current is typically 10pA at 25°C. (VCC – 1.3V). The input current is typically 10pA at 25°C.
V COMPOUT (Pin 7):
Comparator Output. The output can
SS (Pin 4):
Negative Supply or Ground Connection. source 20mA and sink 5mA.
COMPIN+ (Pin 5):
Noninverting Input of Comparator. The input common mode ranges from V
VCC (Pin 8):
Positive Supply, 2.5V ≤ VCC ≤ 12.6V. The supply SS to (VCC – 1.3V). The input current is typically 10pA at 25°C. bypass capacitors are not required if the supply impedance is low. For single supply applications, it is a good general practice to bypass VCC with a 0.1µF capacitor to ground.
W BLOCK DIAGRA S LTC1541 LTC1542
V 8 V 8 CC CC + + 1 AMPOUT 1 AMPOUT OP AMP COMPOUT 7 OP AMP COMPOUT 7 – – REF 6 ×1 2 AMPIN– 2 AMPIN– COMP COMP COMPIN– 6 3 AMPIN+ – 3 AMPIN+ – COMPIN+ 5 COMPIN+ 5 4 V 4 V SS + SS + LTC1541 BD LTC1541 BD2 15412fd 8
W U TYPICAL PERFOR A CE CHARACTERISTICS Op Amp Open-Loop Gain and Phase vs Frequency
120 0 100 –45 PHASE SHIFT (DEGREES) 80 –90 PHASE 60 –135 40 –180 GAIN 20 –225 OPEN-LOOP GAIN (dB) 0 –270 VCC = 5V V –20 SS = GND –315 RLOAD = 100kΩ –40 –360 10 100 1k 10k 100k 1M FREQUENCY (Hz) 1541/42 TPC13
U U U PI FU CTIO S AMPOUT (Pin 1):
Op Amp Output. The output can swing
REF (Pin 6) (LTC1541):
Reference Output. VREF = 1.2V from rail-to-rail while driving a capacitive load of up to ±1% over industrial temperature range, and is also con- 1000pF. The output can source and sink 0.7mA (min). nected to inverting comparator input internally. This de-
AMPIN– (Pin 2):
Inverting Input of Op Amp. The input vice can source up to 2mA and sink up to 20µA. The output common mode ranges from V can drive a bypass capacitor of up to 0.01µF without SS to (VCC – 1.3V). The input current is typically 10pA at 25°C. oscillation.
AMPIN+ (Pin 3):
Noninverting Input of Op Amp. The input
COMPIN– (Pin 6) (LTC1542):
Inverting Input of Compara- common mode ranges from V tor. The input common mode ranges from VSS to SS to (VCC – 1.3V). The input current is typically 10pA at 25°C. (VCC – 1.3V). The input current is typically 10pA at 25°C.
V COMPOUT (Pin 7):
Comparator Output. The output can
SS (Pin 4):
Negative Supply or Ground Connection. source 20mA and sink 5mA.
COMPIN+ (Pin 5):
Noninverting Input of Comparator. The input common mode ranges from V
VCC (Pin 8):
Positive Supply, 2.5V ≤ VCC ≤ 12.6V. The supply SS to (VCC – 1.3V). The input current is typically 10pA at 25°C. bypass capacitors are not required if the supply impedance is low. For single supply applications, it is a good general practice to bypass VCC with a 0.1µF capacitor to ground.
W BLOCK DIAGRA S LTC1541 LTC1542
V 8 V 8 CC CC + + 1 AMPOUT 1 AMPOUT OP AMP COMPOUT 7 OP AMP COMPOUT 7 – – REF 6 ×1 2 AMPIN– 2 AMPIN– COMP COMP COMPIN– 6 3 AMPIN+ – 3 AMPIN+ – COMPIN+ 5 COMPIN+ 5 4 V 4 V SS + SS + LTC1541 BD LTC1541 BD2 15412fd 8
