Datasheet AD693 (Analog Devices) - 2

AD693–SPECIFICATIONS (@ +25
8
C and VS = +24 V. Input Span = 30 mV or 60 mV. Output Span = 4–20 mA, RL = 250
V
, VCM = 3.1 V, with external pass transistor unless otherwise noted.) Model AD693AD/AQ/AE Conditions Min Typ Max Units LOOP-POWERED OPERATION
TOTAL UNADJUSTED ERROR1, 2 ±0.25 6
0.5
% Full Scale T ± MIN to TMAX 0.4 6
0.75
% Full Scale 100 Ω RTD CALIBRATION ERROR3 (See Figure 17) ±0.5 ±2.0 °C LOOP POWERED OPERATION2 Zero Current Error4 Zero = 4 mA ±25 6
80
µA Zero = 12 mA ±40 6
120
µA Zero = 0 mA5 +7 +35
+100
µA vs. Temp. Zero = 4 mA ±0.5 ±1.5 µA/°C Power Supply Rejection (RTI) 12 V ≤ V ≤ OP 36V6 ±3.0 6
5.6
µV/V 0 V ≤ VCM ≤ 6.2 V Common-Mode Input Range (See Figure 3) 0 +VOP – 4 V6 V Common-Mode Rejection (RTI) 0 V ≤ VCM ≤ 6.2 V ±10 6
30
µV/V Input Bias Current7 +5
+20
nA TMIN to TMAX +7
+25
nA Input Offset Current7 VSIG = 0 ±0.5 6
3.0
nA Transconductance Nominal 30 mV Input Span 0.5333 A/V 60 mV Input Span 0.2666 A/V Unadjusted Error ±0.05 6
0.2
% vs. Common-Mode 0 V ≤ VCM ≤ 6.2 V 30 mV Input Span ±0.03 ±0.04 %/V 60 mV Input Span ±0.05 ±0.06 %/V Error vs. Temp. ±20 ±50 ppm/°C Nonlinearity8 30 mV Input Span ±0.01 6
0.05
% of Span 60 mV Input Span ±0.02 6
0.07
% of Span OPERATIONAL VOLTAGE RANGE Operational Voltage, V 6 OP
+12 +36
V Quiescent Current Into Pin 9 +500
+700
µA OUTPUT CURRENT LIMIT
+21
+25
+32
mA
COMPONENTS OF ERROR
SIGNAL AMPLIFIER9 Input Voltage Offset ±40 6
200
µV vs. Temp ±1.0 ±2.5 µV/°C Power Supply Rejection 12 V ≤ VOP ≤ 36 V6 ±3.0 6
5.6
µV/V 0 V ≤ VCM ≤ 6.2 V V/I CONVERTER9, 10 Zero Current Error Output Span = 4–20 mA ±30 ±80 µA Power Supply Rejection 12 V ≤ VOP ≤ 36 V6 ±1.0 ±3.0 µA/V Transconductance Nominal 0.2666 A/V Unadjusted Error ±0.05 ±0.2 % 6.200 V REFERENCE9, 12 Output Voltage Tolerance ±3 6
12
mV vs. Temp. ±20 ±50 ppm/°C Line Regulation 12 V ≤ VOP ≤ 36 V6 ±200 6
300
µV/V Load Regulation11 0 mA ≤ IREF ≤ 3 mA ±0.3 6
0.75
mV/mA Output Current13 Loop Powered, (Figure 10)
+3.0
+3.5 mA 3-Wire Mode, (Figure 15) +5.0 mA –2– REV. A