Rev 3November 2005
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TS921
Rail-to-Rail High Output Current
Single Operational Amplifier
■Rail-to-rail input and output ■Low noise: 9nV/√Hz ■Low distortion
■High output current: 80mA (able to drive 32Ω loads)
■High-speed: 4MHz, 1V /µs ■Operating from 2.7V to 12V ■ESD internal protection: 1.5kV ■Latch-up immunity
■
Macromodel included in this specification
Description
The TS921 is a rail-to-rail single BiCMOS operational amplifier optimized and fully specified for 3V and 5V operation.
Its high output current allows low-load impedances to be driven.
The TS921 exhibits very low noise, low distortion and low offset. It has a high output current capability which makes this device an excellent choice for high quality, low voltage or battery-operated audio systems.
The device is stable for capacitive loads up to 500pF .
Applications
■Headphone amplifier ■Piezoelectric speaker driver ■Sound cards, multimedia systems ■
Line driver, actuator driver
■Servo amplifier
■Mobile phone and portable communication sets
■
Instrumentation with low noise as key factor
www.st
TS921
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Order Codes
Part Number Temperature Range
Package Packing Marking TS921IN -40°C, +125°C DIP8T ube
TS921IN
接种棒TS921ID/IDT SO-8
T ube or T ape & Reel
921I TS921IPT TSSOP8
(Thin Shrink Outline Package)Tape & Reel TS921IYD/IYDT
SO-8 (automotive grade level)
T ube or T ape & Reel
921IY
TS921Absolute Maximum Ratings
1 Absolute Maximum Ratings
Table 1.
Key parameters and their absolute maximum ratings
Table 2.
Operating conditions
Symbol Parameter
Condition
Value Unit V CC Supply voltage (1)
1.All voltage values, except differential voltage are with respect to network ground terminal.
14V Vid Differential Input Voltage (2)2.Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. If Vid > ±1V ,
the maximum input current must not exceed ±1mA. In this case (Vid > ±1V) an input serie resistor must be added to limit input current.±1
V V i Input Voltage V DD -0.3 to V CC +0.3
V T stg Storage Temperature
-65 to +150
°C T j Maximum Junction Temperature
150°C R thja
Thermal Resistance Junction to
Ambient
SO-8
TSSOP8
R thjc Thermal Resistance Junction to
Case
SO-8
TSSOP8
DIP8
ESD Electro-Static Discharge
HBM
Human Body Model (3)3.Human body model, 100pF discharged through a 1.5k Ω resistor into pin of device.
1.5kV MM
Machine Model (4)4.Machine model ESD, a 200pF cap is charged to the specified voltage, then discharged directly into the IC with
no external series resistor (internal resistor < 5Ω), into pin to pin of device.100V CDM
Charged Device Model
1.5kV
Output Short Circuit Duration see note (5)
5.There is no short-circuit protection inside the device: short-circuits from the output to V cc can cau
se excessive
heating. The maximum output current is approximately 80mA, independent of the magnitude of V cc . Destructive dissipation can result from simultaneous short-circuits on all amplifiers.
Latch-up Immunity
200mA Soldering Temperature
10sec,
Standard package 250°C 10sec,
Pb-free package
260
Symbol Parameter
Value Unit V CC Supply Voltage
2.7 to 12V V icm Common Mode Input Voltage Range V DD -0.2 to V CC +0.2
V T oper
Operating Free Air T emperature Range
-40 to +125
°C
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2 Electrical Characteristics
过氧化氢浓度测定
Table 3.
Electrical characteristics for V CC =3V,
往复锯片V DD =0V,V icm =V CC /2, R L connected
to V /2, T =25°C (unless otherwise specified)
Table 4.Electrical characteristics for V CC = 5V, V DD = 0V, V icm = V CC/2, R L connected to V
/2, T = 25°C (unless otherwise specified)
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