THS770006 Datasheet, PDF (4/39 Pages) National Semiconductor (TI) – Broadband, Fully-Differential, 14-/16-Bit ADC DRIVER AMPLIFIER

THS770006
SBOS520B – JULY 2010 – REVISED JANUARY 2012
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Test conditions are at T_A = +25°C, V_S+ = +5V, V_OCM = +2.5V, V_OUT = 2V_PP, R_L = 400Ω differential, G = +6dB, differential input
and output, and input and output referenced to midsupply, unless otherwise noted. Measured using evaluation module as
discussed in Test Circuits section.
PARAMETER
TEST CONDITIONS
TEST
MIN
TYP
MAX
UNIT
LEVEL ⁽¹⁾
Output third-order intercept
point
At device outputs, R_L = 400Ω, f = 100MHz
48
dBm
C
Input-referred voltage noise
f > 100kHz
1.7
nV/√Hz
C
Ouput-referred voltage noise f > 100kHz
3.4
nV/√Hz
C
Noise figure
100Ω differential
source
f = 50 MHz
f = 100 MHz
f = 200 MHz
10.5
dB
C
11
dB
C
13
dB
C
Overdrive recovery
Overdrive = ±0.5V
5
7.5
ns
B
Output balance error
f = 200MHz
–60
dB
C
Output impedance
f = 100MHz
4.4
Ω
C
DC PERFORMANCE
Gain
Output offset
Common-mode rejection ratio
INPUT
T_A = +25°C, R_L = 400Ω
T_A = +25°C, R_L = 100Ω
T_A = –40°C to +85°C, R_L = 400Ω
T_A = –40°C to +85°C, R_L = 100Ω
T_A = +25°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
5.75
6
6.25
dB
A
5.5
5.7
5.9
dB
B
5.7
6.3
dB
B
5.45
5.95
dB
B
–10
±1
10 mV
A
–12.5
12.5 mV
B
36
60
dB
A
35
dB
B
Differential input resistance
85
100
115
Ω
A
Input common-mode range
Inputs shorted together, V_OCM = 2.5V
V_OCM = 2.5V, V_OUT = 3V_PP, HD degradation < 3dB,
see Figure 13
2.25
1.5
2.75
V
A
3.1
V
C
OUTPUT
Most positive output voltage
Each output with
200Ω to midsupply
T_A = +25°C
T_A = –40°C to +85°C
Least positive output voltage
Each output with
200Ω to midsupply
T_A = +25°C
T_A = –40°C to +85°C
Most positive output voltage
Each output with
50Ω to midsupply
T_A = +25°C
T_A = –40°C to +85°C
Least positive output voltage
Each output with
50Ω to midsupply
T_A = +25°C
T_A = –40°C to +85°C
Differential output voltage
T_A = +25°C, R_L = 400Ω
T_A = –40°C to +85°C, R_L = 400Ω
Differential output current drive ^{TA = +25°C, RL = 10Ω}
T_A = –40°C to +85°C, R_L =10Ω
OUTPUT COMMON-MODE VOLTAGE CONTROL
3.64
3.7
V
A
3.59
V
B
1.3
1.4
V
A
1.45
V
B
3.59
3.6
V
A
3.54
V
B
1.3
1.5
V
A
1.55
V
B
4.4
4.85
4.2
80
V_PP
B
V_PP
B
mA
B
80
mA
B
V_OCM small-signal bandwidth
V_OCM slew rate
V_OCM voltage range
V_OCM gain
Output common-mode offset
from V_OCM input
V_OCM input bias current
V_{OUT_CM} = 200mV_PP
V_{OUT_CM} = 500mV_PP
Supplied by external source⁽²⁾
V_OCM = 2.5V
V_OCM = 2.5V
2.25V ≤ V_OCM ≤ 2.75V
525
MHz
C
180
V/µs
C
2.25
2.5
2.75
V
C
0.98
1
1.02 V/V
A
–30
12
30 mV
A
–400
±30
400
µA
A
(2) Limits set by best harmonic distortion with V_OUT = 3V_PP. V_OCM voltage range can be extended if lower output swing is used or distortion
degradation is allowed, and increased bias current into pin is acceptable. For more information, see Figure 12 and Figure 31.
4
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