High Speed Amplifiers (BW > 50 MHz)
High Supply Voltage Amplifiers
ADA4898-1/ADA4898-2: High Voltage, Low Noise, Low Distortion, Unity-Gain Stable, High Speed Op Amp
The ADA4898 is an ultralow noise and distortion, unity gain stable, voltage feedback op amp that is ideal for use in 16-bit and 18-bit systems with power
supplies from µ5 V to µ16 V. The ADA4898 features a linear, low noise input stage and internal compensation that achieves high slew rates and low noise.
Features
10
10
•ꢀUltralow noise
•ꢀ 0.9 nV/√Hz
CURRENT
VOLTAGE
•ꢀ 2.4 pA/√Hz
•ꢀ 1.2 nV/√Hz at 10 Hz
•ꢀUltralow distortion: −93 dBc at 500 kHz
•ꢀWide supply voltage range: ±5 V to ±16 V
•ꢀHigh speed
1
1
•ꢀ −3 dB bandwidth: 65 MHz (G = +1)
•ꢀ Slew rate: 55 V/µs
•ꢀUnity-gain stable
0.1
0.1
•ꢀLow input offset voltage: 160 µV maximum
•ꢀLow input offset voltage drift: 1 µV/°C
•ꢀLow input bias current: −0.1 µA
•ꢀLow input bias current drift: 2 nA/°C
•ꢀSupply current: 8 mA
1
10
100
1k
10k
100k
FREQUENCY (Hz)
Input voltage noise and current noise frequency.
Applications
•ꢀInstrumentation
•ꢀActive filters
•ꢀDAC buffers
•ꢀSAR ADC drivers
•ꢀOptoelectronics
High Supply Voltage Amplifiers
Distortion
Supply
Voltage
(V)
BW @
ACL Min Rate
(MHz) (V/ms)
Slew
Price
@ 1k
(OEM $US)
SFDR1 @ BW
Part
Number
No. of
Amps
ACL
Min
Noise
(nV/ z)
VOS Max
IB
IS/Amp
IOUT
Temp
Disable
Rail-to-Rail1
Packaging
√H
(mV) (µA Max) (mA Typ) (mA) Range2
(dBc)
(MHz)
ADA4898-1
ADA4898-2
1
2
2.29
3.21
65, 612,
615
1
1
2
2
1
1
65
120
130
60
55
150
450
2000
300
350
–116
0.1
0.9
1.7
10
2
0.12
1
0.4
7
8.1
5
40
32
50
50
32
50
H
H
I
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
65, 612,
615
AD829
1
–553
–783
–863
–923
–783
1
1
2.75
AD818
AD828
1
2
1.94
2.40
5, 65,
612, 615
2
6.6
0.45
7
7
65, 612,
618
AD844
1
0.1
0.1
1
0.3
2
6.5
4.8
7
H
H/I
I
2.78
AD847
AD827
1
2
2.86
5.82
65, 612,
615
50
15
15
AD817
AD826
1
2
1.74
2.40
5, 65, 612 ,
615
50
2
6.6
1 RRIO: rail-to-rail input/output, RRO: rail-to-rail output, SS: single supply (IVR includes –VSY).
2
Temp range: H = extended industrial (–40°C to +125°C), I = industrial (–40°C to +85°C).
THD: total harmonic distortion.
3
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