OP275 Analog Devices, OP275 Datasheet
OP275
Specifications of OP275
Available stocks
Related parts for OP275
OP275 Summary of contents
Page 1
... Improved dc performance is also provided with bias and offset currents greatly reduced over purely bipolar designs. Input off- set voltage is guaranteed and is typically less than 200 V. This allows the OP275 to be used in many dc coupled or summing applications without the need for special selections or the added noise of additional offset adjustment circuitry. ...
Page 2
... OP275–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter AUDIO PERFORMANCE THD + Noise Voltage Noise Density Current Noise Density Headroom INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS ...
Page 3
... V Output Short-Circuit Duration to GND Storage Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . – +150 C Operating Temperature Range OP275G . . . . . . . . . . . . . . . . . . . . . . . . . . . . – +85 C Junction Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . – +150 C Lead Temperature Range (Soldering, 60 sec +300 C 4 ...
Page 4
... OP275–Typical Performance Curves + +VOM –5 –10 –VOM –15 –20 – SUPPLY VOLTAGE – V Output Voltage Swing vs. Supply Voltage MARKER 15 309.059Hz 60 MAG (A/H) 60.115dB V = 15V + 135 MARKER 15 309.058Hz PHASE (A/R 90.606Deg –10 –45 –90 –20 10k 100k 1M 10M FREQUENCY – Hz Open-Loop Gain, Phase vs. Frequency ...
Page 5
... C 4 – 3.5 3 SUPPLY VOLTAGE – V Supply Current vs. Supply Voltage 15V + 100 1k 100k FREQUENCY – Hz Current Noise Density vs. Frequency –5– OP275 16 14 –VOM +VOM + 15V 100 1k 10k LOAD RESISTANCE – Maximum Output Voltage vs. Load Resistance 120 V = 15V 110 S 100 90 SINK ...
Page 6
... OP275–Typical Performance Curves 200 V = 15V BASED ON 920 OP AMPS + 160 120 –300–200–100 0 100 200 300 400 –500–400 500 INPUT OFFSET VOLTAGE – µV Input Offset (V ) Distribution 15V + DIFFERENTIAL INPUT VOLTAGE – V Slew Rate vs. Differential Input Voltage 100 90 10 ...
Page 7
... Figure 5. THD + Noise vs. Supply Voltage 10k 20k Noise The voltage noise density of the OP275 is below 7 nV/ Hz from LOAD 30 Hz. This enables low noise designs to have good perfor- mance throughout the full audio range. Figure 6 shows a typical OP275 with a 1/f corner at 2.24 Hz. ...
Page 8
... Figure 7. Noise Test Fixture Input Overcurrent Protection The maximum input differential voltage that can be applied to the OP275 is determined by a pair of internal Zener diodes con- nected across its inputs. They limit the maximum differential in- put voltage to 7.5 V. This is to prevent emitter-base junction breakdown from occurring in the input stage of the OP275 when very large differential voltages are applied ...
Page 9
... Figure 14. Compensating the Feedback Pole Attention to Source Impedances Minimizes Distortion Since the OP275 is a very low distortion amplifier, careful atten- tion should be given to source impedances seen by both inputs. As with many FET-type amplifiers, the p-channel JFETs in the OP275’s input stage exhibit a gate-to-source capacitance that varies with the applied input voltage ...
Page 10
... OP275 as an inductance simulator (gyrator). The circuit uses one OP275 (A2 and A3) for the FDNR and one OP275 (A1 and A4 input buffer and bias current source for A3. Amplifier A4 is config- ured in a gain set the pass band magnitude response ...
Page 11
... OP275 SPICE Model * * Node assignments * noninverting input * inverting input * positive supply * negative supply * * * .SUBCKT OP275 INPUT STAGE & POLE AT 100 MHz * 2.188 2.188 CIN 1 2 3.7E-12 CM1 1 98 7.5E-12 CM2 2 98 7.5E- 364E- 100E-3 IOS 1 2 1E-9 EOS 9 3 POLY( 1.672 ...
Page 12
... OP275 8-Lead Narrow-Body SOIC (S Suffix) 0.1968 (5.00) 0.1890 (4.80 0.2440 (6.20) 0.1574 (4.00) 0.2284 (5.80) 0.1497 (3.80 0.0688 (1.75) PIN 1 0.0532 (1.35) 0.0098 (0.25) 0.0040 (0.10) 0.0500 0.0192 (0.49) 0.0098 (0.25) SEATING (1.27) 0.0138 (0.35) PLANE BSC 0.0075 (0.19) OUTLINE DIMENSIONS Dimensions shown in inches and (mm) ...