OPA211AIDGKR Audio Power Amplifier IC Precision Amplifiers 1.1nV/rtHz Noise Lo Pwr Prec Op Amp
digital audio amplifier ic
,audio preamplifier ic
OPA211AIDGKR Audio Power Amplifier IC Precision Amplifiers 1.1nV/rtHz Noise Lo Pwr Prec Op Amp
1 Features
- Low Voltage Noise: 1.1 nV/√Hz at 1 kHz
-
Input Voltage Noise: 80 nVPP (0.1 to 10 Hz)
-
THD+N:–136dB(G=1,ƒ=1kHz)
-
Offset Voltage: 125 μV (Maximum)
-
Offset Voltage Drift: 0.35 μV/°C (Typical)
-
Low Supply Current: 3.6 mA/Ch (Typical)
-
Unity-Gain Stable
-
Gain Bandwidth Product:
– 80MHz(G=100)
– 45MHz(G=1)
-
Slew Rate: 27 V/μs
-
16-Bit Settling: 700 ns
-
Wide Supply Range:
– ±2.25to±18V,4.5Vto36V
-
Rail-to-Rail Output
-
Output Current: 30 mA
-
SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8
2 Applications
-
PLL Loop Filters
-
Low-Noise, Low-Power Signal Processing
-
16-Bit ADC Drivers
-
DAC Output Amplifiers
-
Active Filters
-
Low-Noise Instrumentation Amps
-
Ultrasound Amplifiers
-
Professional Audio Preamplifiers
-
Low-Noise Frequency Synthesizers
-
Infrared Detector Amplifiers
-
Hydrophone Amplifiers
-
Geophone Amplifiers
-
Medical Instrumentation
3 Description
The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.
The extremely low voltage and low current noise, high-speed, and wide output swing of the OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.
In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10- V output swings. This ac performance, combined with only 125 μV of offset and 0.35 μV/°C of drift over temperature, makes the OPAx211 series suitable for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high- resolution digital-to-analog converters (DACs).
The OPAx211 series is specified over a wide dual- power supply range of ±2.25 to ±18 V, or for single- supply operation from 4.5 to 36 V.
The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. A dual version (OPA2211) is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPADTM package. This series of operational amplifiers is specified from TA = –40°C to +125°C.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
OPA211 |
SOIC (8) |
4.90 mm × 3.90 mm |
|
SON (8) |
3.00 mm × 3.00 mm |
|
|
VSSOP (8) |
3.00 mm × 3.00 mm |
|
|
OPA2211 |
SON (8) |
3.00 mm × 3.00 mm |
|
SO PowerPAD (8) |
4.90 mm × 3.90 mm |
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