TSH321 STMICROELECTRONICS | Alldatasheet

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WIDE BANDWIDTH AND MOS INPUTS SINGLE OPERATIONAL AMPLIFIER June 1998 ORDER CODES Part Number Temperature Range Package ND TSH321I -40 oC, 125oC •• 321-01.TBL 7Inverting Input Non-inverting Input Output Offset Null 2Offset Null 1 N.C. VCC V CC 321-01.EPS PIN CONNECTIONS (top view) .LOW DISTORTION .GAIN BANDWIDTH PRODUCT : 300MHz .GAIN OF 2 STABILITY .SLEW RATE : 400V/µs .VERY FAST SETTLING TIME : 60ns (0.1%) .VERY HIGH INPUT IMPEDANCE D SO8 (Plastic Micropackage) N DIP8 (Plastic Package) DESCRIPTION: The TSH321 is a wideband monolithic operational amplifier, requiring a minimum close loop gain of 2 for stability. The TSH321 features extremely high input imped- ance (typically greater than 1012Ω ) allowing direct interfacing with high impedance sources. Low distortion, wide bandwidth and high linearity make this amplifier suitable for RF and video appli- cations. Short circuit protection is provided by an internal current-limiting circuit. The TSH321 has internal electrostatic discharge (ESD) protection circuits and fulfills MILSTD883C- Class2.

321-02.EPS SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCC Supply Voltage ± 7V Vid Differential Input Voltage ± 5V Vi Input Voltage Range ± 5V Iin Current On Offset Null Pins ± 20 mA Toper Operating Free-Air Temperature Range TSH321I -40 oC, 125oC oC 321-02.TBL N1 N2 TSH321 100kΩ V CC 321-03.EPS INPUT OFFSET VOLTAGE NULL CIRCUIT OPERATING CONDITIONS Symbol Parameter Value Unit VCC Supply Voltage ± 3t o± 6V Vic Common Mode Input Voltage Range V CC - to VCC + -3 V 321-03.TBL TSH321

ELECTRICAL CHARACTERISTICS

VCC = ± 5V, Tamb =2 5oC (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit Vio Input Offset Voltage Tmin ≤ Tamb ≤ Tmax. 0.5 10 mV DV io Input Offset Voltage Drift Tmin ≤ Tamb ≤ Tmax. 10 µV/oC Iib Input Bias Current 2 300 pA Iio Input Offset Current 2 200 pA ICC Supply Current, no load VCC = ± 5V VCC = ± 3V VCC = ±6V Tmin ≤ Tamb ≤ Tmax. VCC = ± 5V mA A vd Large Signal Voltage Gain Vo = ±2.5V R L = ∞ R L= 100Ω R L =5 0Ω 800 300 200 1300 850 650 V/V V icm Input Common Mode Voltage Range -5 to +2 -5.5 to +2.5 V CMR Common Mode Rejection Ratio V ic=V icm min. 60 100 dB SVR Supply Voltage Rejection Ratio VCC = ± 5V to± 3V 50 70 dB Vo Output Voltage R L = 100Ω R L =5 0Ω Tmin ≤ Tamb ≤ Tmax. R L = 100Ω R L =5 0Ω ± 3 ± 2.8 ± 2.9 ± 2.7 +3.5 -3.7 +3.3 -3.5 V Io Output Short Circuit Current Vid= ±1V, Vo =0 V ± 50 ± 100 mA GBP Gain Bandwidth Product AVCL = 100, RL = 100Ω ,C L = 15pF, f = 7.5MHz 300 MHz SR Slew Rate Vin= ± 1V, AVCL =2R L = 100Ω ,C L = 15pF 200 400 V/µs en Equivalent Input Voltage Noise R S =5 0Ω fo = 1kHz fo = 10kHz fo = 100kHz fo = 1MHz 18.2 18.1 18.2 nV √Hz K ov Overshoot Vin= ± 1V AVCL =2 ,RL = 100Ω ,C L = 15pF 15 ts Settling Time 0.1% - (note 1) Vin= ± 1V, AVCL =- 1 6 0 ns tr,tf Rise and Fall Time - (note 1) Vin= ±100mV, AVCL =2 2 ns td Delay Time - (note 1) Vin= ±100mV, AVCL =2 2 ns ∅ m Phase Margin AVM =2 ,RL = 100Ω, CL = 15pF 45 Degrees THD Total Harmonic Distortion AVCL = 10, f = 1KHz, Vo = ± 2.5V, no load 0.02 FPB Full Power Bandwidth - (note 2) Vo = 5Vpp, RL = 100Ω Vo = 2Vpp, RL = 100Ω MHz Note 1 : See test waveform figure Note 2 : Full power bandwidth =SR Π Vopp 321-04.TBL TSH321

50% td tr 90% ts 0.1% of edge amplitude 10% 321-04.EPS TEST WAVEFORM Input 50Ω 1kΩ 1kΩ 10nF 10µF C F -5V +5V 10nF 10µF 50Ω Output 321-05.EPS EVALUATION CIRCUIT 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 ca- pacitor.
  • To provide low inductance and low resistance common return, use a ground plane or com- mon point return for power and signal.
  • All leads must be wide and as short as possi- ble especially for op amp inputs. This is in order to decrease parasitic capacitance and inductance.
  • Use small resistor values to decrease time constant with parasitic capacitance.
  • Choose component sizes as small aspossible (SMD).
  • On output, decrease capacitor load so as to avoid circuit stability being degraded which may cause oscillation. One can also add a serial resistor in order to minimise its influ- ence.
  • One can add in parallel with feedbackresistor a few pF ceramic capacitor C F adjusted to optimize the settling time. PRINTED CIRCUIT LAYOUT TSH321

PM-DIP8.EPS PACKAGE MECHANICAL DATA

8 PINS - PLASTIC DIP

Dimensions Millimeters Inches A 3.32 0.131 a1 0.51 0.020 B 1.15 1.65 0.045 0.065 b 0.356 0.55 0.014 0.022 b1 0.204 0.304 0.008 0.012 D 10.92 0.430 E 7.95 9.75 0.313 0.384 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 F 6.6 0260 i 5.08 0.200 L 3.18 3.81 0.125 0.150 Z 1.52 0.060 DIP8.TBL TSH321

PM-SO8.EPS PACKAGE MECHANICAL DATA

8 PINS - PLASTIC MICROPACKAGE (SO)

Dimensions Millimeters Inches A 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.026 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 C 0.25 0.5 0.010 0.020 c1 45 o (typ.) D 4.8 5.0 0.189 0.197 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F 3.8 4.0 0.150 0.157 L 0.4 1.27 0.016 0.050 M 0.6 0.024 S8 o (max.) SO8.TBL Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for useas criticalcomponents in life support devices or systems without express written approval of STMicroelectronics.  The ST logo is a trademark of STMicroelectronics  1998 STMicroelectronics – Printed in Italy – All Rights Reserve d STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. ORDER CODE : TSH321