THS3215 Datasheet, PDF (10/71 Pages) Texas Instruments – THS3215 650-MHz, Differential to Single-Ended DAC Output Amplifier

THS3215
SBOS780A – MARCH 2016 – REVISED APRIL 2016
www.ti.com
7.8 Electrical Characteristics: Midscale (DC) Reference Buffer
at +V_CC = 6.0 V, –V_CC = –6.0 V, R_LOAD = 150 Ω at pin 15, and T_J ≈ 25˚C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
TEST
LEVEL
(1)
AC PERFORMANCE (Output measured at pin 15)
Small-signal bandwidth (SSBW)
V_OUT = 100 mV_PP
200
Large-signal bandwidth (LSBW)
V_OUT = 1 V_PP
50
Slew rate⁽²⁾
V_OUT = 4-V step
110
Input voltage noise
f > 5 kHz
4.6
Input current noise
f > 5 kHz
1.3
AC output impedance
f = 20 MHz, no load current
2.5
DC AND I/O PERFORMANCE (R_S = 25 Ω, and output measured at pin 15, unless otherwise noted)
Buffer gain
V_I = ±1 V, R_LOAD = 200 Ω
.9985
0.999
Buffer gain drift
T_J = –40°C to +125°C
–1.2
Output offset from midsupply
Input floating, pin 1 open
–120
30
Output offset voltage
Input driven to 0 V from 0-Ω source
–1.0
4.0
Input offset voltage drift
Input bias current⁽³⁾
T_J = –40°C to +125°C, input driven
to 0 V
4
9
–10
±1
Input bias current drift
Input/output headroom to either
supply
T_J = –40°C to +125°C
gain change < 1%
–5
±1
1.1
Input impedance
Internal 50-kΩ divider resistors to
each supply
22 || 1.5
Linear output current into resistive
load
±1.62 V into 36 Ω
40
65
DC output impedance
Load current = ±30 mA
0.1
0.3
Positive power-supply rejection ratio Referred to input with VMID_IN (pin
(+PSRR)
1) at GND
60
Negative power-supply rejection
ratio (—PSRR)
Referred to input with VMID_IN (pin
1) at GND
69
MHz
C
MHz
C
V/µs
C
nV/√Hz
C
pA/√Hz
C
Ω
C
1.001 V/V
A
–2.2 ppm/°C
B
70 mV
A
15 mV
A
15 µV/°C
B
10
µA
A
5 nA/°C
B
1.4
V
A
kΩ || pF
C
mA
A
0.6
Ω
C
dB
A
dB
A
(1) Test levels (all values set by characterization and simulation): (A) 100% tested at T_A≈ T_J≈ 25°C; over temperature limits by
characterization and simulation. (B) Not tested in production; limits set by characterization and simulation. (C) Typical value only for
information.
(2) This slew rate is the average of the rising and falling time estimated from the large-signal bandwidth as: (V_PEAK / √2) × 2π × f_–3dB.
(3) Currents out of pin treated as a positive polarity.
10
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