OP470GPZ Analog Devices Inc, OP470GPZ Datasheet - Page 13

• Manufacturer Part Number: OP470GPZ
• Description: IC OPAMP GP 6MHZ QUAD LN 14DIP
• Manufacturer: Analog Devices Inc

Specifications of OP470GPZ

• Slew Rate: 2 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Gain Bandwidth Product: 6MHz
• Current - Input Bias: 25nA
• Voltage - Input Offset: 400µV
• Current - Supply: 9mA
• Voltage - Supply, Single/dual (±): 9 V ~ 36 V, ±4.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Op Amp Type: General Purpose
• No. Of Amplifiers: 4
• Bandwidth: 6MHz
• Supply Voltage Range: ± 4.5V To ± 18V
• Amplifier Case Style: DIP
• No. Of Pins: 14
• Channel Separation: 125
• Common Mode Rejection Ratio: 100
• Current, Input Bias: 25 nA
• Current, Input Offset: 12 nA
• Current, Supply: 9 mA
• Impedance, Thermal: 33 °C/W
• Number Of Amplifiers: Quad
• Package Type: PDIP-14
• Resistance, Input: 0.4 Megohms (Differential), 11 Gigaohms (Common-Mode)
• Temperature, Operating, Range: -40 to +85 °C
• Voltage, Gain: 1700 V/mV
• Voltage, Input: ±11, ±12 V
• Voltage, Noise: 3.8 nV/sqrt Hz
• Voltage, Offset: 0.4 mV
• Voltage, Output, High: +13 V
• Voltage, Output, Low: -13 V
• Voltage, Supply: ±15 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

Figure 14. Noise Density of Low Noise Amplifier, G = 1000
DIGITAL PANNING CONTROL
Figure 15 uses a DAC-8408, quad 8-bit DAC to pan a signal
between two channels. The complementary DAC current out-
puts two of the DAC-8408’s four DACs drive current-to-voltage
converters built from a single quad OP470. The amplifiers have
complementary outputs with the amplitudes dependent upon
the digital code applied to the DAC. Figure 16 shows the comple-
mentary outputs for a 1 kHz input signal and digital ramp applied
to the DAC data inputs. Distortion of the digital panning con-
trol is less than 0.01%.
REV. B
100
0%
90
10
SIDE A IN
SIDE B IN
PINS 9 (LSB) – 16 (MSB)
5V
DAC SELECT
DAC DATA BUS
1k
1k
Figure 15. Digital Panning Control Circuit
DAC-8408GP
V
V
A/B
R/W
DS1
DS2
REF
REF
A
C
DGND
DAC A
DAC B
DAC C
DAC D
V
5V
DD
–13–
I
I
OUT2A/2B
OUT2C/2D
I
OUT1A
I
I
I
R
R
R
R
OUT1B
OUT1C
OUT1D
Gain error due to the mismatching between the internal DAC
ladder resistors and the current-to-voltage feedback resistors is
eliminated by using feedback resistors internal to the DAC. Of
the four DACs available in the DAC-8408, only two DACs, A
and C, actually pass a signal. DACs B and D are used to pro-
vide the additional feedback resistors needed in the circuit. If
the VREFB and VREFD inputs remain unconnected, the
current-to-voltage converters using RFBB and RFBD are unaf-
fected by digital data reaching DACs B and D.
FB
FB
FB
FB
A
B
C
D
A OUT
A OUT
Figure 16. Digital Panning Control Output
20pF
20pF
20pF
20pF
100
0%
90
10
1/4
OP470E
1/4
OP470E
1/4
OP470E
1/4
OP470E
5V
+15V
–15V
5V
A OUT
A OUT
B OUT
B OUT
1ms
OP470