ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)1 25 °C
Supply Voltages
VCC ........................................................................ +6 V
VDD ...................................................................... +15 V
VSS ...................................................................... –15 V
Temperature
Operating Temperature .......................... –40 to +85 °C
Storage ................................................ –65 to +150 °C
Input Voltages
VREFT .................................... VSS –0.3 V to VDD +0.3 V
VREFB ................................... VDD +0.3 V to VSS –0.3 V
Digital inputs ....................................–0.3 V to VCC +0.3 V
Note: 1. Operation at any Absolute Maximum Rating is not implied. See
Electrical Specifications for proper nominal applied conditions
in typical applications.
ELECTRICAL SPECIFICATIONS
TA = TMIN to TMAX, VCC = +5.0 V, VDD = +11.5 V, VSS = –8.0 V, VREFT=3.5 V, VREFB = –1.5 V, RL = +10 kΩ, CL = 50 pF, unless otherwise specified.
PARAMETERS
TEST
CONDITIONS
TEST
LEVEL
SPT5420
MIN
TYP
MAX
UNITS
Accuracy
Resolution
Integral Linearity Error (ILE)
Differential Linearity Error (DLE)
Zero-Scale Error
Full Scale Error
Gain Error
VI
13
VI
–2.0
VI
–1.0
VI
–25
VI
–25
VI
–25
±0.5
±0.3
Bits
+2.0
LSB
+1.0
LSB
+25
mV
+25
mV
+25
mV
Reference Inputs
Input Current
VREFT1
VREFB2
RGND Inputs
DC Input Impedance
Input Range
IV
VI
0
VI
–5.0
V
IV
–2.0
+3.5
–1.5
60
±100
nA
+5.0
V
0
V
kΩ
2.0
V
Output Characteristics
Output Swing3,4
Short Circuit Current
Resistive Load
DC Output Impedance
Digital Inputs
Logic 1 Voltage
Logic 0 Voltage
Maximum Input Current
Input Capacitance
VI
+7/–3
IV
VI
5
IV
VI
2.4
VI
VI
–10
V
10
V
15
mA
kΩ
1.0
Ω
V
0.8
V
10
µA/pin
pF
Notes:
1. VREFT < 8 V + (VSS x 0.5); e.g., if VSS = –8 V, then VREFT < 4 V
2. VREFB > (VDD x 0.5) – 9.5 V; e.g., if VDD = 11 V, then VREFB > –4 V
3. VSS + 2.5 V ≤ VOUT ≤ VSS + 16.0 V for 18.5 V ≤ VDD – VSS ≤ 20.0 V
VSS + 2.5 V ≤ VOUT ≤ VDD – 2.5 V for VDD – VSS ≤ 18.5 V
INPUT CODE
4. VOUT = 2 X (VREFB +[VREFT – VREFB] X 8192 ) – VRGND
SPT
2
SPT5420
6/26/01