INA849

現行

超低雜訊 (1nV/√Hz)、高速 (28MHz、35V/μs)、精密 (35μV) 儀器放大器

立即訂購

產品規格表

document-pdfAcrobat INA849 Ultra-Low-Noise (1 nV/√Hz), High-Bandwidth, Instrumentation Amplifier datasheet (Rev. B) (英文) PDF | HTML

INA849

現行

產品規格表

立即訂購

產品詳細資料

Number of channels

1

Vs (max) (V)

36

Vs (min) (V)

8

Input offset (±) (max) (µV)

35

Voltage gain (min) (V/V)

1

Voltage gain (max) (V/V)

10000

Noise at 1 kHz (typ) (nV√Hz)

1

Features

Current Feedback, High speed, Super-beta, Ultra-low noise

CMRR (min) (dB)

120

Input offset drift (±) (max) (µV/°C)

0.4

Input bias current (±) (max) (nA)

20

Iq (typ) (mA)

6.2

Bandwidth at min gain (typ) (MHz)

28

Gain error (±) (max) (%)

0.1

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Type

Resistor

Gain nonlinearity (±) (max) (%)

0.001

Output swing headroom (to negative supply) (typ) (V)

0.15

Output swing headroom (to positive supply) (typ) (V)

-0.15

Input common mode headroom (to negative supply) (typ) (V)

2.5

Input common mode headroom (to positive supply) (typ) (V)

-2.5

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

0.06

Number of channels

1

Vs (max) (V)

36

Vs (min) (V)

8

Input offset (±) (max) (µV)

35

Voltage gain (min) (V/V)

1

Voltage gain (max) (V/V)

10000

Noise at 1 kHz (typ) (nV√Hz)

1

Features

Current Feedback, High speed, Super-beta, Ultra-low noise

CMRR (min) (dB)

120

Input offset drift (±) (max) (µV/°C)

0.4

Input bias current (±) (max) (nA)

20

Iq (typ) (mA)

6.2

Bandwidth at min gain (typ) (MHz)

28

Gain error (±) (max) (%)

0.1

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Type

Resistor

Gain nonlinearity (±) (max) (%)

0.001

Output swing headroom (to negative supply) (typ) (V)

0.15

Output swing headroom (to positive supply) (typ) (V)

-0.15

Input common mode headroom (to negative supply) (typ) (V)

2.5

Input common mode headroom (to positive supply) (typ) (V)

-2.5

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

0.06

VSSOP (DGK)

8

14.7 mm² (3 mm × 4.9 mm)

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

Ultra-low noise: 1-nV/√Hz input voltage noise (typical)
Precision super-beta input performance:
- Low offset voltage: 35 µV (maximum)
- Low offset voltage drift: 0.4 µV/°C (maximum)
- Low input bias current: 20 nA (maximum)
- Low gain drift: 5 ppm/°C for G = 1 (maximum)
Bandwidth: 28 MHz (G = 1), 8 MHz (G = 100)
Slew rate: 35 V/µs
Common-mode rejection: 120 dB (minimum) for maximum gain
Supply range:
- Single supply: 8 V to 36 V
- Dual supply: ±4 V to ±18 V
Specified temperature range: –40°C to +125°C
Packages: 8-pin SOIC and VSSOP

Ultra-low noise: 1-nV/√Hz input voltage noise (typical)
Precision super-beta input performance:
- Low offset voltage: 35 µV (maximum)
- Low offset voltage drift: 0.4 µV/°C (maximum)
- Low input bias current: 20 nA (maximum)
- Low gain drift: 5 ppm/°C for G = 1 (maximum)
Bandwidth: 28 MHz (G = 1), 8 MHz (G = 100)
Slew rate: 35 V/µs
Common-mode rejection: 120 dB (minimum) for maximum gain
Supply range:
- Single supply: 8 V to 36 V
- Dual supply: ±4 V to ±18 V
Specified temperature range: –40°C to +125°C
Packages: 8-pin SOIC and VSSOP

The INA849 is an ultra-low noise instrumentation amplifier optimized for maximum accuracy in high-resolution systems and operation over a wide single-supply or dual-supply range. The device offers significantly lower input bias current than competitors as a result of super-beta input transistors. A state-of-the-art manufacturing process provides exceptionally low voltage noise, input offset voltage, and offset voltage drift.

Precisely matched integrated resistors provide a high, 92-dB (G = 1) common-mode rejection across the full input common-mode range. A single external resistor sets any gain from 1 to 10,000. The current-feedback topology of the INA849 provides wide bandwidth at higher gains for very-small, fast-moving signals. For example, the device provides 8 MHz of bandwidth at G = 100, and 28 MHz at a G = 1, with a fast 0.4-µs settling time (0.01%) for directly driving high-resolution, analog-to-digital converters (ADCs).

The INA849 is an ultra-low noise instrumentation amplifier optimized for maximum accuracy in high-resolution systems and operation over a wide single-supply or dual-supply range. The device offers significantly lower input bias current than competitors as a result of super-beta input transistors. A state-of-the-art manufacturing process provides exceptionally low voltage noise, input offset voltage, and offset voltage drift.

Precisely matched integrated resistors provide a high, 92-dB (G = 1) common-mode rejection across the full input common-mode range. A single external resistor sets any gain from 1 to 10,000. The current-feedback topology of the INA849 provides wide bandwidth at higher gains for very-small, fast-moving signals. For example, the device provides 8 MHz of bandwidth at G = 100, and 28 MHz at a G = 1, with a fast 0.4-µs settling time (0.01%) for directly driving high-resolution, analog-to-digital converters (ADCs).

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