Hybrid Systems CORPORATION HS 2020 Programmable Gain Amplifier FEATURES # Digitally Programmable 1 to 128 a Gain Nonlinearity 0.002% a Gain Accuracy 0.002% a Full Power Bandwidth 100 kHz a Low Offset Drift: < 5,V/C a MIL-STD-883 Rev. C, Level B Screening Available APPLICATIONS w Autoranging A/D a P Data Acquisition w A/D Input Amplifier = Sample and Hold Buffer DESCRIPTION The HS 2020 is a precision hybrid amplifier that features high speed low offset performance in addition to being user programmable for gains from 1 to 128. Again range from 1 to 128 can be achieved from binary (TTL) inputs to the HS 2020 in 8 steps. This gives the user a dynamic range of 19 bits with analog input steps from +20 mV to +10V. The HS 2020 uses the precision JFET OP-15 FUNCTIONAL DIAGRAM amplifier along with a laser trimmed stable nichrome thin film resistor network. The HS 2020 features very low 100 pV offset voltage which yields much less than 2 LSBina 12 bit ADC. The excellent performance over temperature (55C to + 125C) is achieved by combining a proven circuit configuration with the benefits of state-of-the-art hybrid manufacturing to achieve low cost, small size, and high reliability. The HS 2020 is available in 2 versions. The HS 2020C is specified over a temperature range of 0C to +70C. The HS 2020B is specified from 55C to +125C and is fully screened and tested to MIL- STD-883 Rev. C, Level B requirements. +15V OFFSET OFFSET 8 9 ANALOG ,!9 oO + 7 ANALOG INPUT OP-15 OUTPUT PRECISION RESISTOR NETWORK { MULTIPLEXER HS 2020 ces fs Ao A; Ag DIGITAL +15 ANALOG -15 +15 GND (DIGITAL) GND 12-1516 16 11 17 18 oe eo ee (ANALOG) 51SPECIFICATIONS (Typical @ + 25C, supply voltage + 15VDC, unless otherwise specified) GAIN (Non-Inverting) Fixed Settings Gain Nonlinearity (Y% FSR) G=1 G G G ou oa G= 128 Gain Accuracy Initial (+ 25C) G=1 G = 128 VS Temperature (-25C to +85C) Ge1 G = 128 (55C to +125C) G=1 G = 128 ANALOG INPUT 1,2,4,8,16,32,64,128 0.005% max (0.002% typ) 0.006% max (0.002% typ) 0.007% max (0.003% typ) 0.008% max (0.003% typ) 0.008% max (0.003% typ) 0.005% max (0.003% typ) 0.2% max (0.1% typ) 0.008% max (0.003% typ) 0.24% max {0.1% typ) 0.01% max (0.004% typ) 0.4% max (0.2% typ) Input Impedance Input Voltage Range 109Q +12VDC VOLTAGE OFFSET, Referred to Input Initial (@ + 25C) Adjustable to Zero G=1 G = 128 VS Temperature (-55C to + 125C) G=1 G =128 INPUT CURRENT 0.5mV max 0.5mV max (0.1mV typ) 2mV max 2mvV max (0.5mV typ) Input Bias Current VS Temperature (-55C to + 125C) NOISE Voltage Noise, RTI 0.1 Hz to 10 Hz + 200pA max (+ 40pA typ) +19nA max (+2.7nA typ) G=1 4uV p-p G = 128 4uV p-p 10 Hz to 1 MHz Ge=1 200pV p-p Current Noise 0.1 Hz to 10 Hz G=1 0.26pA p-p G = 128 0.26pA p-p 10 Hz to 10 kHz G=1 4pA p-p LOGIC INPUT (TTL)! Logic 1 +2.0V min Logic 0 0.8V min Input Current 20yA max Switching Time 0.7uSec OUTPUT CHARACTERISTICS Output Range + 10V min (+ 12V typ) Output Current + 5mA max DYNAMIC RESPONSE Small Signal BW (G = 1) 5 MHz Full Power BW 100 kHz Slew Rate (G = 1) 15V/pSec Output Settling (to 0.1%) G=1 5.2uSec max (4yuSec typ) MECHANICAL Case Style Ceramic Pkg, Metal Lid Case Dimensions 0,992 0.015 [+ @5.20+ 0.38) >| > ~asetosey =F 1p.490+0.010| | 9-30020.010 (12.454:0.25)| | (7-62+0.25) 0.010 + 0.002 - 0.001 5 + 0.019 9-010 + 0.002 - 0.001 PIN (1) oeetb28) (0.25 +0.05 0.03) INDEX 0.018 + 0.002 0.205 | DIMENSIONS h (0.46 0.08) - o) 19:10: 0.005 400+ 0.005. wt 6: zi) Incl be (2.5420.13) (mm) PIN ASSIGNMENTS PIN FUNCTION PIN FUNCTION 1 DIGITAL GND 18 NC 2 Ag 17 NC 3 Ay 16 + 15 (ANALOG) 4 Ap 15 ANALOG GND 5 + 15 (DIGITAL) 14 ANALOG GND 6 -15 13 ANALOG GND 7 ANALOG OUTPUT 12 ANALOG GNO 8 OFFSET 1 NC 9 OFFSET 10 ANALOG INPUT RECOMMENDED POWER OPTIONAL OFFSET AND SUPPLY BYPASS CIRCUIT GAIN ADJUSTMENTS TO +15 SUPPLIES Offset Adjust + com - +15 0.01uF 0.01uF 20kQ {4-44 <hr pF j 1uF $ (8) (9) OFFSET OFFSET (5, 16) (1, 12-15) (8) +15 ANA GND -15 NOTE: 1. Analog ground shown connected to digital ground. User may elect to segregate these in a system application. GAIN CODES AND SETTLING TIMES DIGITAL CODE OUTPUT SETTLING TIME* GAIN Az A, Ao (40.1% 20V Step) 1 0 0 0 4uSec 2 0 0 1 4uSec 4 0 1 6 4uSec 8 0 1 1 4uSec 16 1 0 0 SuSec 32 1 0 1 114Sec 64 1 1 0 20uSec 128 1 1 1 40uSec For each gain value the magnitude of the input step was chosen to make the output step 20V. GAIN ACCURACIES GAIN ACCURACY (%) 25C ~25C to +85C | 55C to + 125C TYPICAL MAX TYPICAL MAX TYPICAL MAX 0.002 0.005] 0.003 0,008 | 0.004 0.010 0.005 0.015] 0.005 0.020 ; 0.008 0.020 0.005 0.015] 0.005 0.024 | 0.015 0.040 0.010 0.020] 0.015 0.048 | 0.020 0.080 16 [0.020 0.030} 0.020 0.048 | 0.025 0.080 man G=16 8yuSec max (SuSec typ) 32 10.020 0.040] 0.020 0.060 | 0.040 0.100 G = 128 70puSec max (40pSec typ) if 0.040 0.100 0.040 0.180 0.100 9.300 TEMPERATURE 8 10.100 0.200} 0. . . . Operating -B ~55C to + 125C 0C to +70C ORDERING INFORMATION Storage -~65C to + 150C POWER SUPPLY MODEL DESCRIPTION Power Supply Range + 18V max (+ 15V typ) HS 2020C Programmable Gain Amplifier Current +16mA, 8mA 20C to + 70C MBTF 260,000 hrs HS 2020B Programmable Gain Ampiifier Per MIL-STD-883 Rev. C, Level B NOTE: -55C to + 125C 1. Digital inputs should not exceed + 8V. Logic supply at pin 5 must be at least + 5V to maintain logic levels. 52 Specifications subject to change without notice.