Datasheet

6
8
3
1
2 7
4 5
NC
V+
V
OUT
REF
B
−IN
+IN
+
20 kΩ 380 kΩ
380 kΩ
380 kΩ
19 kΩ
REF
A
V−
INA149
www.ti.com SBOS579B –SEPTEMBER 2011–REVISED JULY 2012
THERMAL INFORMATION
INA149
THERMAL METRIC
(1)
D (SOIC) UNITS
8 PINS
θ
JA
Junction-to-ambient thermal resistance 110
θ
JCtop
Junction-to-case (top) thermal resistance 57
θ
JB
Junction-to-board thermal resistance 54
°C/W
ψ
JT
Junction-to-top characterization parameter 11
ψ
JB
Junction-to-board characterization parameter 53
θ
JCbot
Junction-to-case (bottom) thermal resistance N/A
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
PIN CONFIGURATION
D PACKAGE
SOIC-8
(TOP VIEW)
PIN DESCRIPTIONS
NAME NO. DESCRIPTION
–IN 2 Inverting input
+IN 3 Noninverting input
NC 8 No internal connection
REF
A
5 Reference input
REF
B
1 Reference input
V– 4 Negative power supply
V+ 7 Positive power supply
(1)
V
OUT
6 Output
(1) In this document, (V+) – (V–) is referred to as V
S
.
Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): INA149