Datasheet

MCP4902/4912/4922
DS22250A-page 4  2010 Microchip Technology Inc.
Offset Error Temperature
Coefficient
V
OS
/°C — 0.16 — ppm/°C -45°C to 25°C
— -0.44 — ppm/°C +25°C to 85°C
Gain Error g
E
— -0.10 1 % of
FSR
Code = 0xFFFh, not including off-
set error
Gain Error Temperature
Coefficient
G/°C — -3 — ppm/°C
Input Amplifier (V
REF
Input)
Input Range – Buffered
Mode
V
REF
0.040 — V
DD
– 0.040 V Note 2
Code = 2048
V
REF
= 0.2V p-p, f = 100 Hz and
1kHz
Input Range – Unbuffered
Mode
V
REF
0— V
DD
V
Input Impedance R
VREF
—165 — k Unbuffered Mode
Input Capacitance –
Unbuffered Mode
C
VREF
—7 — pF
Multiplier Mode -3 dB
Bandwidth
f
VREF
—450 — kHzV
REF
= 2.5V ±0.2Vp-p,
Unbuffered, G = 1x
f
VREF
—400 — kHzV
REF
= 2.5V ±0.2 Vp-p,
Unbuffered, G = 2x
Multiplier Mode –
Total Harmonic Distortion
THD
VREF
—-73 — dBV
REF
= 2.5V ±0.2Vp-p,
Frequency = 1 kHz
Output Amplifier
Output Swing V
OUT
— 0.01 to
V
DD
– 0.04
— V Accuracy is better than 1 LSb for
V
OUT
= 10 mV to (V
DD
– 40 mV)
Phase Margin m — 66 — degrees
Slew Rate SR — 0.55 — V/µs
Short Circuit Current I
SC
—15 24 mA
Settling Time t
settling
— 4.5 — µs Within 1/2 LSb of final value from
1/4 to 3/4 full-scale range
Dynamic Performance (Note 2)
DAC-to-DAC Crosstalk — 10 — nV-s
Major Code Transition Glitch — 45 — nV-s 1 LSb change around major carry
(0111...1111 to 1000...0000)
Digital Feedthrough — 10 — nV-s
Analog Crosstalk — 10 — nV-s
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, V
DD
= 5V, V
SS
= 0V, V
REF
= 2.048V, Output Buffer Gain (G) = 2x, R
L
= 5 k to
GND, C
L
= 100 pF T
A
= -40 to +85°C. Typical values are at +25°C.
Parameters Sym Min Typ Max Units Conditions
Note 1: Guaranteed monotonic by design over all codes.
2: This parameter is ensured by design, and not 100% tested.