RH1498M
10MHz, 6V/µs, Dual
Rail-to-Rail Input and Output
Precision C-Load Op Amp
DESCRIPTION
The RH1498 is a dual, rail-to-rail input and output precision
C-Load™ op amp with a 10MHz gain-bandwidth product
and a 6V/μs slew rate.
The RH1498 is designed to maximize input dynamic range
by delivering precision performance over the full supply
voltage. Using a patented technique, the input stages of
the RH1498 are trimmed, one at the negative supply and
the other at the positive supply. The resulting guaranteed
common mode rejection is much better than other rail-to-
rail input op amps. When used as a unity-gain buffer in front
of single supply 12-bit A-to-D converters, the RH1498 is
guaranteed to add less than 1LSB of error even in single
3V supply systems.
With 110dB of supply rejection, the RH1498 maintains its
performance over a supply range of 2.2V to 36V. The inputs
can be driven beyond the supplies without damage or phase
reversal of the output. These op amps remain stable while
driving capacitive loads up to 10,000pF
.
The wafer lots are processed to Linear Technology's in-
house Class S flow to yield circuits usable in stringent
military and space applications.
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
+
to V
–
) ............................... 36V
Input Current....................................................... ±10mA
Output Short-Circuit Duration (Note 2) ........ Continuous
Operating Temperature Range............... – 55°C to 125°C
Specified Temperature Range ................ – 55°C to 125°C
Junction Temperature ......................................... 150°C
Storage Temperature Range...................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
BURN-IN CIRCUIT
50k
16V
PACKAGE INFORMATION
TOP VIEW
OUT A
–IN A
+IN A
1
2
3
4
5
10
9
8
7
6
V
+
OUT B
–IN B
+IN B
NC
100Ω
RH1498M
NC
V
–
50k
–16V
RH1498M BI
W PACKAGE
10-LEAD FLATPAK
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RH1498M
TABLE 1: ELECTRICAL CHARACTERISTICS
(Preirradiation) V
S
= ±15V, V
CM
= V
OUT
= 0V, unless otherwise noted.
T
A
= 25°C
SYMBOL PARAMETER
V
OS
Input Offset Voltage
Input Offset Voltage Match
(Channel-to-Channel)
(Note 3)
I
B
Input Bias Current
CONDITIONS
V
CM
= V
+
, V
–
V
CM
= 14.5V, –14.5V
V
CM
= V
+
to V
–
V
CM
= 14.5V to –14.5V
V
CM
= V
+
V
CM
= 14.5V
V
CM
= V
–
V
CM
= –14.5V
V
CM
= V
+
, V
–
V
CM
= 14.5V, –14.5V
V
CM
= V
+
, V
–
V
CM
= 14.5V, –14.5V
–15
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
V
O
= –14.5V to 14.5V,
R1 = 10k
V
O
= –10V to 10V, R1 = 2k
V
CM
V
CM
= 14.5V to –14.5V
V
CM
= V
+
to V
–
V
CM
= 14.5V to –14.5V
V
S
= ±2V to ±16V
V
S
= ±2V to ±16V
3
3
= V
+
to V
–
1000
500
90
84
400
12
0.3
5200
2300
102
103
80
90
83
110
110
1
88
82
100
100
2, 3
1
86
102
4
60
25
400
100
2, 3
5, 6
3
3
NOTES
MIN
TYP
200
250
SUB-
MAX GROUP
800
1
1400
450
0
–715
0
250
–250
12
715
1
0
–1200
200
50
6
70
1
15
–14.5
40
300
14.5
2, 3
400
–500
0
500
1200
2, 3
1800
350
1100
2, 3
–55°C ≤ T
A
≤ 125°C
MIN
TYP
MAX
SUB-
GROUP
UNITS
μV
μV
μV
μV
nA
nA
nA
nA
nA
nA
nA
nA
V
nV
P-P
nV/√Hz
pA/√Hz
V/mV
V/mV
dB
dB
dB
dB
dB
dB
Input Bias Current Match
(Channel-to-Channel)
(Note 3)
I
OS
Input Offset Current
Input Voltage Range
Input Noise Voltage
e
n
i
n
A
VOL
Input Noise Voltage Density
Input Noise Current Density
Large-Signal Voltage Gain
CMRR
Common Mode
Rejection Ratio
CMRR Match
(Channel-to-Channel)
(Note 3)
PSRR
Power Supply
Rejection Ratio
PSRR Match
(Channel-to-Channel)
(Note 3)
V
OL
Output Voltage Swing
(Low) (Note 4)
No Load
I
SINK
= 1mA
I
SINK
= 10mA
I
SINK
= 5mA
No Load
I
SINK
= 1mA
I
SINK
= 10mA
I
SINK
= 5mA
4
18
50
230
2.5
75
420
±15
±30
1.8
30
100
500
10
150
800
4
25
70
180
75
150
500
25
250
800
5, 6
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
MHz
V/μs
V
OH
Output Voltage Swing
(High) (Note 4)
4
4
5
100
300
5, 6
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amp
Gain-Bandwidth Product
Slew Rate
f = 100kHz
A
V
= –1, R
L
= 2k,
V
O
= ±10V, Measure at
V
O
= ±5V
1
2.5
1
±7.5
5.8
±12
2.2
8.5
4
3
2, 3
2, 3
5, 6
6.8
3.5
10.5
6
4
2.2
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RH1498M
TABLE 2: ELECTRICAL CHARACTERISTICS
(Preirradiation) V
S
= 3V, 5V; V
CM
= V
OUT
= half supply, unless otherwise noted.
T
A
= 25°C
SYMBOL PARAMETER
V
OS
Input Offset Voltage
CONDITIONS
V
CM
= V
+
, V
–
V
CM
= V
+
– 0.5V, V
–
+ 0.5V
3
NOTES MIN
TYP
150
200
SUB-
MAX GROUP
800
1
1400
350
0
250
650
1
–650 –250
0
3
5
V
–
0.1Hz to 10Hz
400
12
0.3
5
V
S
= 5V, V
O
= 75mV to 4.8V,
R
L
= 10k
V
S
= 3V, V
O
= 75mV to 2.8V,
R
L
= 10k
V
S
= 5V, V
CM
= V
+
to V
–
V
S
= 3V, V
CM
= V
+
to V
–
V
S
= 5V, V
CM
= 0.5V to 4.5V
V
S
= 3V, V
CM
= 0.5V to 2.5V
V
S
= 5V, V
CM
= V
+
to V
–
V
S
= 3V, V
CM
= V
+
to V
–
V
S
= 5V, V
CM
= 0.5V to 4.5V
V
S
= 3V, V
CM
= 0.5V to 2.5V
V
S
= 2.2V to 12V,
V
CM
= V
O
= 0.5V
V
S
= 2.2V to 12V,
V
CM
= V
O
= 0.5V
No Load
I
SINK
= 1mA
I
SINK
= 2.5mA
No Load
I
SINK
= 1mA
I
SINK
= 2.5mA
V
S
= 5V
V
S
= 3V
V
S
= 5V, f = 100kHz
V
S
= ±2.5V, A
V
= –1,
R
L
= 2k, V
O
= ±2V,
Measure at V
O
= ±1V
3
3
600 3800
500 2000
76
72
90
86
4
60
25
210
210
5, 6
65
1
V
+
V
–
+ 0.5V
15
300
V
+
– 0.5V
2, 3
10
0
–1100
180
0
30
400
–450
0
0
450
1100
2, 3
1800
300
1100
2, 3
–55°C ≤ T
A
≤ 125°C
MIN
TYP
MAX
SUB-
GROUP
UNITS
μV
μV
μV
μV
nA
nA
nA
nA
nA
nA
nA
nA
V
nV
P-P
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Input Offset Voltage Match V
CM
= V
+
to V
–
(Channel-to-Channel)
V
CM
= V
+
– 0.5V, V
–
+ 0.5V
(Note 3)
I
B
Input Bias Current
V
CM
= V
+
V
CM
= V
+
– 0.5V
V
CM
= V
–
V
CM
= V
–
+ 0.5V
V
CM
= V
+
, V
–
V
CM
= V
+
– 0.5V, V
–
+ 0.5V
V
CM
= V
+
, V
–
V
CM
= V
+
– 0.5V, V
–
+ 0.5V
Input Bias Current Match
(Channel-to-Channel)
(Note 3)
I
OS
Input Offset Current
Input Voltage Range
Input Noise Voltage
e
n
i
n
C
IN
A
VOL
Input Noise Voltage Density f = 1kHz
Input Noise Current Density f = 1kHz
Input Capacitance
Large-Signal Voltage Gain
CMRR
Common Mode
Rejection Ratio
1
68
65
85
85
2, 3
CMRR Match
(Channel-to-Channel)
(Note 3)
PSRR
Power Supply
Rejection Ratio
PSRR Match
(Channel-to-Channel)
(Note 3)
V
OL
Output Voltage Swing
(Low) (Note 4)
Output Voltage Swing
(High) (Note 4)
Short-Circuit Current
Supply Current per Amp
Gain-Bandwidth Product
Slew Rate
75
70
91
86
1
66
62
82
104
118
2, 3
88
82
105
120
1
86
80
2, 3
4
14
50
90
2.5
70
140
±12.5
±12.0
6.8
2.6
24
19
1.7
10.5
4.5
30
100
200
10
150
250
4
25
65
110
5
100
180
±5
±5
5.8
±10
±9.5
2
8.5
3.6
2
75
150
220
25
250
300
5, 6
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/μs
V
OH
4
4
1
5, 6
2, 3
I
SC
I
S
GBW
SR
2.2
1
4
2.7
2, 3
5, 6
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RH1498M
TABLE 2A: ELECTRICAL CHARACTERISTICS
(Postirradiation) V
S
= 5V, 3V; V
CM
= half supply, T
A
= 25°C, unless otherwise noted.
10Krad(Si)
SYMBOL PARAMETER
V
OS
I
B
I
OS
A
VOL
CMRR
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Voltage Range
Large-Signal Voltage
Gain
Common Mode
Rejection Ratio
CMRR Match
(Channel-to-Channel)
PSRR
Power Supply
Rejection Ratio
PSRR Match
(Channel-to-Channel)
V
OUT
Output Voltage
Swing Low
Output Voltage
Swing High
I
SC
I
S
SR
Short-Circuit Current
Supply Current
Slew Rate
V
S
= ±2.5V, A
V
= –1,
R
L
= 10k, V
O
= ±2V,
Measure at V
O
= ±1V
2
V
O
= 75mV to V
+
– 0.2V
R1 = 10k
V
CM
= V
+
to V
–
V
CM
= V
+
to V
–
V
S
= 2.2V to 12V,
V
CM
= V
O
= 0.5V
V
S
= 2.2V to 12V,
V
CM
= V
O
= 0.5V
No Load
I
SINK
= 1mA
I
SINK
= 2.5mA
No Load
I
SINK
= 1mA
I
SINK
= 2.5mA
3
3
CONDITIONS
V
CM
= V
+
, V
–
V
CM
= V
+
, V
–
V
CM
= V
+
, V
–
V
–
300
70
70
88
82
60
100
200
20
150
250
±8
2.2
2
±8
2.2
2
NOTES MIN
MAX
950
700
65
V
+
V
–
300
70
70
88
82
60
100
200
20
150
250
±8
2.2
2
20Krad(Si)
MIN
MAX
950
750
65
V
+
V
–
300
70
70
88
82
60
100
200
20
150
250
±8
2.2
2
50Krad(Si)
MIN
MAX
950
800
65
V
+
V
–
300
70
70
88
82
60
100
200
20
150
250
±8
2.2
100Krad(Si) 200Krad(Si)
MIN
MAX
950
850
65
V
+
V
–
300
70
70
88
82
60
100
200
20
150
250
MIN
MAX
950
900
65
V
+
UNITS
μV
nA
nA
V
V/mV
dB
dB
dB
dB
mV
mV
mV
mV
mV
mV
mA
mA
V/μs
4
4
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
A heat sink may be required to keep the junction temperature
below this absolute maximum rating when the output is shorted
indefinitely.
Note 3:
Matching parameters are the difference between amplifiers
A and B.
Note 4:
Output voltage swings are measured between the output and
power supply rails.
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