140 mhz bandwidth low noise single op-amps - Agentcobra
operational amplifier featuring low input noise of ... As for any high frequency device, a few rules must be observed ... performances from this high speed op amp.
TSH10 140MHz BANDWIDTH LOW NOISE SINGLE OPERATIONAL AMPLIFIER LOW NOISE : 6nV/√ Hz GAIN BANDWIDTH PRODUCT : 140MHz UNITY GAIN STABLE SLEW RATE : 150V/µs STANDARD PIN OUT
N DIP8 (Plastic Package)
DESCRIPTION The TSH10 is a low cost wide bandwidth single operational amplifier featuring low input noise of 6nV/√ Hz. Other features as unity gain stability, fast settling time and high linearity make it suitable for any application requiring speed and precision as high resolution video or DAC buffer.
Parameter Input Offset Voltage Input Offset Voltage Drift Tmin ≤ Tamb ≤ Tmax Input Bias Current Input Offset Current Supply Current, no load VCC = ± 5V Large Signal Voltage Gain RL= 100Ω Vo = ±2.5V Input Common Mode Voltage Range Common Mode Rejection Ratio Vic = Vicm min. Supply Voltage Rejection Ratio VCC = ± 5V to ± 3V Output Voltage RL = 100Ω Output Short Circuit Current Vid = ±1V, Vo = 0V Gain Bandwidth Product AVCL = 100, R L = 100Ω, f = 7.5MHz Slew Rate Vin = ± 2V, AVCL = 1, RL = 100Ω Equivalent Input Voltage Noise Phase Margin AVM = 1, RL = 100Ω, CL = 15pF
PRINTED CIRCUIT LAYOUT As for any high frequency device, a few rules must be observed when designing the PCB to get the best performances from this high speed op amp. From the most to the least important points : • Each power supply lead has to be bypassed to ground with a 10nF ceramic capacitor very close to the device and a 10µF tantalum capacitor. • To provide low inductance and low resistance common return, use a ground plane or common point return for power and signal. • All leads must be wide and as short as possible especially for op amp inputs. This is in order to decrease parasitic capacitance and inductance.
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• Use small resistor values to decrease time constant with parasitic capacitance. Be aware on TSH10 device of the Iio error and input noise currents with high feedback resistor values. • Choose component sizes as small as possible (SMD). • On output, decrease capacitor load so as to avoid circuit stability being degraded which may cause oscillation. You can also add a serial resistor in order to minimise its influence. • One can add in parallel with feedback resistor a few pF ceramic capacitor CF adjusted to optimize the settling time.
TSH10
PM-DIP8.EPS
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP
A a1 B b b1 D E e e3 e4 F i L Z
Min.
Millimeters Typ. 3.32
0.51 1.15 0.356 0.204
Max.
1.65 0.55 0.304 10.92 9.75
7.95
Min. 0.020 0.045 0.014 0.008
Max.
0.065 0.022 0.012 0.430 0.384
0.313
2.54 7.62 7.62
3.18
Inches Typ. 0.131
0.100 0.300 0.300 6.6 5.08 3.81 1.52
0.125
0260 0.200 0.150 0.060
DIP8.TBL
Dimensions
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TSH10
PM-SO8.EPS
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO)
A a1 a2 a3 b b1 C c1 D E e e3 F L M S
Min.
Millimeters Typ.
0.1 0.65 0.35 0.19 0.25
Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5
Min.
Inches Typ.
0.026 0.014 0.007 0.010
Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020
0.189 0.228
0.197 0.244
0.004
o
45 (typ.) 4.8 5.8
5.0 6.2 1.27 3.81
3.8 0.4
0.050 0.150 4.0 1.27 0.6
0.150 0.016
0.157 0.050 0.024
o
8 (max.)
SO8.TBL
Dimensions
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