REV. B
–13–
VCL =
–3V
–3
–2
–1
0
1
2
3
OUTPUT VOLTAGE – Volts
AD8036, ACL = +1
AD8037, ACL = +2
AD8036
AD8037
INPUT
ERROR
VOLTAGE
–
mV
VCL =
–2V
VCL =
–1V
VCH =
+1V
VCH =
+2V
VCH =
+3V
20
15
10
5
0
–5
–10
–15
–20
TPC 55. Input Error Voltage vs. Clamped Output Voltage
1.0
–0.8
–1.0
0.8
0.6
0.4
0.2
0.0
–0.2
–0.4
–0.6
INPUT VOLTAGE AV – Volts
NONLINEARITY
–
mV
VH = + 1V
VL = – 1V
20
15
10
5
0
–5
–10
–15
–20
TPC 56. AD8036/AD8037 Nonlinearity Near Clamp Voltage
REF
+2V
+1V
0V
TPC 57. AD8036 Clamp Overdrive (2
×) Recovery
Clamp Characteristics–AD8036/AD8037
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1.0
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
ABSOLUTE VALUE OF OUTPUT VOLTAGE – Volts
HARMONIC
DISTORTION
–
dBc
VH
+1V
+0.5V
VL
–1V
–0.5V
G
+1V
+2V
AD8036 AD8037
AD8037 3RD
HARMONIC
AD8036 3RD
HARMONIC
AD8036 2ND
HARMONIC
AD8037 2ND
HARMONIC
TPC 58. Harmonic Distortion as Output Approaches
Clamp Voltage; VO = 2 V p-p, RL = 100
, f = 20 MHz
–5
–4
–3
–2
–1
0
1
2
3
4
5
INPUT CLAMP VOLTAGE (VH,VL) – Volts
IBH
IBL
POSITIVE IBH, IBL DENOTES
CURRENT FLOW INTO
CLAMP INPUTS VH, VL
CLAMP
INPUT
BIAS
CURRENT
–
A
80
60
40
20
0
–20
–40
–60
–80
TPC 59. AD8036/AD8037 Clamp Input Bias Current vs.
Input Clamp Voltage
REF
+2V
+1V
0V
TPC 60. AD8037 Clamp Overdrive (2
×) Recovery